Black Line Power Supplies

General Instructions and Information
Although Speedotron Black Line power supplies vary in power and features, they all operate under the same principles. The following instructions apply to the entire Black Line series. For maximum equipment life and for safe, dependable operation of power supplies, we advise you to follow these general rules.

· Before doing anything with the power supply make sure that the Model and Power switches are in the off position and the Reset button (circuit breaker) is fully depressed into its socket.

· Connect light cable(s) to the Light Unit Outlet(s) on the power supply (with the103B, 202VF and 206VF lights, connect the light unit cable to the light unit before connecting to power supply), selecting the appropriate outlets for the desired power level. (Refer to the diagrams on the side of the power supply.)

· To insert, align the light unit plug with the power supply outlet and apply even pressure while pushing. Make sure that all light unit cables are firmly seated.

· Make sure cables are out of pathways or are taped to the floor to prevent accidentally disconnecting cables from power supply.

· Never connect or disconnect a light unit while the power supply is turned on. Never insert or remove flash tubes while the light unit is connected to the power supply. Be sure flash tubes are fully seated into light unit sockets. (Read instructions in the Light Units section of this manual for more information on light unit assembly and operation.)

· Always make sure your Model and Power switches are off when disconnecting or connecting light units. Speedotron power supplies are equipped with arc-protected outlets. However, as with any electrical equipment, arc-over (an electrical discharge between two physically disconnected electrical terminals) is a possibility. When light cables, flash tubes or power cords are improperly seated, arc-over may occur. Also, if your light unit or power supply malfunctions, or the power cord or the internal wiring in the studio is improperly terminated or defective, there is a chance of arc-over. Severe power supply damage and operator injury may result if arc-over occurs.

· Plug sync extension into Sync socket and connect other end to PC cord for camera. All sync extensions require a standard male AC twin-blade type to PC sync cord to connect to a camera or lens. The power supply end of the sync extension cords provided is a standard male AC twin-blade type sync connector with the exception of the 405 and 805 sync extensions. These sync extensions have a 1/4" international (phone jack) plug.

· A slave tripper (Speedotron #23510) may be installed in the Sync socket to fire the power supply. If the slave tripper fails to trigger the power supply when another flash fires, remove the slave, rotate it 180° and reinstall it in the socket. The 805 features a built-in slave trigger for added convenience.

· Connect AC power cord into Power Input on power supply. Always use a three-wire ground power cord and a properly grounded wall outlet with all Speedotron power supplies. Failure to do so may cause the power supply to intermittently misfire. Do not use a three prong-to-two prong "ground eliminator" adapter.

· Once the light units are properly assembled and installed, the power cord is installed and the sync extension is connected, turn the Power switch on. Do not immediately fire the unit on the first use or when the unit has been idle for periods over 3 weeks. Allow several minutes for the power supply's capacitors to form. Once this procedure has been followed at these times, subsequent use of the power supply requires no waiting period.

· Ready/Push to Flash button may be depressed to verify proper system operation.

· When Power is on, be sure Ready/Push to Flash indicator is illuminated before switching Power, Combine/Isolate, or Fast/Slow (not available on 405/805 power supplies) controls. Do not move these switches while the unit is recycling.

· Each Black Line power supply's unique features are fully explained in the next section of this manual.

Never attempt to make repairs to your Speedotron equipment. All electronic flash systems operate on high voltage and power.

It is very dangerous to open a power supply.

To summarize, set-up should go as follows:

· Make sure power supply is off (both Model and Power switches in the off position) and unplugged.

· Connect light units to power supply. Inspect all connections, flash tubes and modeling lights. Set desired ratio.

· Connect sync cable to power supply and camera

· Connect power supply to AC. Turn on power supply and wait for it to reach full charge.

· Test to see that all light units are flashing and slave triggers (if any) are functioning.

Power Ratios
Black Line equipment is capable of symmetrical (all light units receiving the same amount of light) or asymmetrical (ratioed) power distribution. Controlling distribution is as easy as flipping a switch.

Each power supply is divided into three channels with different levels of power, except for the 405 (which has two). These channels may be joined for even (symmetrical) output to all outlets or separated for unequal (asymmetrical) output to a set of outlets in one or more channels. Power distribution charts are provided in the next section of this manual and on the side of each power supply.

When we refer to ratioing, we are describing the levels of power output from the power supply to the light units only. These power output ratios do not mean that the light falling on the subject will be at that same ratio. This will only occur if the light units are the same and have the same flash tube, reflector, cable length, light control accessories, are at the same distance to the subject, and there is no overlap of lighting on the subject, etc. Power output ratios are only offered as a guide to help you determine your lighting arrangements.

405 Description of Controls
Power - turns power supply on and off (flashes light units when turning off).

Model - turns model lamps on and off. Setting this switch on Ratio will reduce the modeling lamps on channel A by 1 stop to match the light unit's output.

A+B or A|B - controls 2-channel power distribution. A+B connects the 2 channels with symmetrical distribution to all outlets; A|B separates channels.

Variable Power Control - simultaneously controls power of both channels, in 1/4 stop increments, down to -2 stops (1/4 power).

Ready/Push illuminates when power supply reaches 100% recycle. Pushing the button manually triggers the flash for testing or open flash applications.

Sync - socket to connect camera or slave to power supply. The 405 accepts 1/4" international (phone jack) sync cords. Reset - push to reset circuit breaker. Circuit breaker disables power supply in case of malfunction.

Light Unit Outlets (3) - sockets for connecting from one to three light units to power supply. The 405 features our new quick-disconnect sockets that snap into contact with the 103B light head. These new sockets are completely compatible with all previous standard light heads.

Power Input - socket for AC power cord.

405 Operating Instructions
In addition to the power suppy general instructions, the following information and techniques are crucial for the proper use and care of the 405 power supply:

Set Ratio switches for desired ratio of power to light unit(s). See the chart on the side of the power supply and below for ratio combinations that are possible with up to three light units.

Connect power supply to AC outlet.

Turn Power switch on. The neon Ready/Push to Flash indicator will illuminate and flicker indicating 100% recycle. The flicker is normal and indicates the operation of the voltage regulator. The unit is now fully charged and ready to fire. Do not immediately fire the unit on the first use or when the unit has been idle for periods over 3 weeks. Allow several minutes for the power supply's capacitors to form. When the power supply has been used recently you may fire the unit immediately.

Push the Ready/Push to Flash button to verify proper system operation.

When Power is on, be sure Ready/Push indicator is illuminated before switching Power or Ratio controls. Do not move these switches while the unit is recycling.

The Variable Power Control simultaneously changes power of both channels: When decreasing power (rotating knob from Full to -1 stop, for example) power to the light unit(s) will not be reduced until the power supply has been fired. Press the Ready/Push button to discharge unit. When increasing power (rotating knob from -1 stop to Full, for example) it is immediately increased to the light units in all models.

Rotating the Variable Power Control does not change the output of the model lamps.

When disassembling the system, turn Power switch to the off position. This flashes all light units connected to the power supply. Do not push the Push to Flash switch before turning power supply off. This will damage power supply.

Unplug power cord from outlet, then disconnect light units from power supply.

805 Description of Controls
Power - turns power supply on and off (flashes light units when turning off).

Model - turns model lamps on and off. Setting this switch on Ratio will reduce the modeling lamps on channel A by 1.5 stop to match the light unit's output.

A+B+C · A|B|C · A|B+C - controls 3-channel power distribution. A+B+C connects all 3 channels with symmetrical distribution to all outlets; A|B|C separates all three channels; A|B+C isolates channel A and combines channels B & C.

Ready/Push - illuminates when power supply reaches 100% recycle. Pushing the button manually triggers the flash for testing or open flash applications.
Sync - socket to connect camera or slave to power supply. The 805 accepts 1/4" international standard sync cords. Inserting the sync cord disconnects the Slave Tripper.

Reset - push to reset circuit breaker. Circuit breaker disables power supply in case of malfunction.

AC - Socket for AC power cord

Slave Tripper - Allows remote operation by sensing the light of another flash. To disconnect - Sync cord must be inserted.

Light Unit Outlets (4) - sockets for connecting from one to four light units to power supply. The 805 features our new quick-disconnect sockets that snap into contact with the 103B light head. These new sockets are completely compatible with all previous standard light heads.

Power Level Control - simultaneously controls power of all channels, in 1/4 stop increments, down to -2 stops (1/4 power).

805 Operating Instructions
In addition to the power supply general instructions, the following information and techniques are crucial for the proper use and care of the 805 power supply:

Set three-position ratio switch for desired ratio of power to light unit(s). See the chart on the side of the power supply for ratio combinations that are possible with up to four light units.

Connect power supply to AC outlet.

Turn Power switch on. The neon Ready/Push indicator will illuminate and flicker indicating 100% recycle. The flicker is normal and indicates the voltage regulator is operating. The unit is now fully charged and ready to fire. Do not immediately fire the unit on the first use or when the unit has been idle for periods over 3 weeks. Allow several minutes for the power supply's capacitors to form.

Push the Ready/Push button to verify proper system operation.

When power is on, be sure Ready/Push indicator is illuminated before switching Power or Ratio controls. Do not move these switches while the unit is recycling.

The Variable Power Control simultaneously changes power of both channels: When decreasing power (rotating knob from Full to -1 stop, for example) power to the light unit(s) will not be reduced until the power supply has been fired. Press the Ready/Push button to discharge unit. When increasing power (rotating knob from -1 stop to Full, for example) it is immediately increased to the light units in all models.

Rotating the Variable Power Control does not change the output of the model lamps.

When disassembling the system, turn Power and Model switches to the off position. This flashes all light units connected to the power supply. Do not push the Ready/Push switch before turning power supply off. This will damage power supply.

Unplug power cord from outlet, then disconnect light units from power supply.

1205CX/2405CX Description of Controls
Note: Instructions apply to all versions of 1205/2405 power supplies. Variations in these models are in switches and AC input connector only. Power - turns power supply on and off (flashes light units when turning off).

Model - turns model lamps on and off.

Fast/Slow - controls recycle rate.

Combine/Isolate - controls 3-channel power distribution. Combine connects channels as indicated (A+B, B+C) with symmetrical distribution; Isolate separates channels as indicated (A B, B C).

Variable Power Control - simultaneously controls power of all 3 channels, in 1/4 stop increments, down to -2 stops (1/4 power).

Ready/Push to Flash - illuminates when power supply reaches 100% recycle. Pushing the button manually triggers the flash for testing or open flash applications.

Sync - socket to connect camera or slave to power supply.

Reset - push to reset circuit breaker. Circuit breaker disables power supply in case of malfunction.

Variable Model Lamp Control (3) - controls output of model lamps, down to -3 stops (1/8 power), independently for each channel.

Light Unit Outlets (4) - sockets for connecting from one to four light units to power supply.

Power Input - socket for AC power cord.

1205CX/2405CX Operating Instructions
The 1205CX and 2405CX are identical in features and operation, except that the 2405CX is twice as powerful. The following instructions apply for both units. Please read these instructions and the general instructions for the proper use and care of these power supplies.

Set Combine/Isolate switches for desired ratio of power to light unit(s). See the chart on the side of the power supply and the next page for ratio combinations that are possible with up to four light units.

Set Fast/Slow switch. Normally, you will operate the unit in fast recycle mode. However, if you do not have adequate power in your studio, this may cause circuit breakers in your studio to blow. In this case, use slow recycle mode.

Connect power supply to AC outlet.

Turn Power switch on. Ready/Push to Flash indicator will illuminate, indicating 100% recycle. The unit is now fully charged and ready to fire. Do not immediately fire the unit on the first use or when the unit has been idle for periods over 3 weeks. Allow several minutes for the power supply's capacitors to form. When the power supply has been used recently you may fire the unit immediately.

Ready/Push to Flash button may be depressed to verify proper system operation. The Ready/Push to Flash indicator light will periodically flicker. This is normal and indicates the operation of the voltage regulator.

When Power is on, be sure Ready/Push to Flash indicator is illuminated before switching Power, Combine/Isolate, or Fast/Slow controls. Do not move these switches while the unit is recycling.

The Variable Power Control simultaneously changes power of all 3 channels. When decreasing power (rotating knob from Full to -1 stop, for example) power to the light unit(s) will not be reduced until the 1205CX/2405CX has been fired. Press the Push to Flash button to discharge unit. When increasing power (rotating knob from -1 stop to Full, for example) it is immediately increased to the light units.

Rotating the Variable Power Control does not change the output of the model lamps. Their output is controlled by the Variable Model Lamps Controls, one control for each power channel. Rotating the knobs immediately adjusts the output of the model lamps. This way, model lamp output can be matched to the light units, and lighting ratios are easily visualized.

When disassembling the system, turn Power switch to the off position. This flashes all light units connected to the Model 1205CX/2405CX. Do not push the Push to Flash switch before turning power supply off. This will damage power supply.

Unplug power cord from outlet, then disconnect light units from power supply.

2401CX/SX Description of Controls
Power - turns power supply on and off.

Power On Indicator - illuminates when main power is switched on.

Model Light - turns model lamps on and off.

800Ws Isolate/Combine - when in isolate, this switch isolates the 800Ws channel from the 1200Ws channel and provides two Light Unit Outlets per channel. When in combine, provides 2000Ws among four Light Unit Outlets.

400Ws Isolate/Combine - when in isolate, this switch isolates the 400Ws channel from the 1200Ws channel and provides two Light Unit Outlets per channel. When in combine, provides 1600Ws among four Light Unit Outlets. (With both 800Ws and the 400Ws switches in combine, 2400Ws is available through any of the six Light Unit Outlets, divided equally. See diagrams on the side panel of the power supply for detailed examples of the ratio system.)

Recycle Rate - controls recycle rate.

Push to Flash - manual triggering of flash for testing or open flash application.

Ready - indicator illuminates when power supply reaches 100% recycle.

Sync - socket to connect camera or slave to power supply.

Reset - (1 for model lamps, 1 for main power) push to reset circuit breaker. Circuit breakers disable power supply and model lamp circuitry in case of malfunction.

Power Input - socket for AC power cord.

Light Unit Outlets (6) - sockets for connecting from one to six light units to power supply.

2401CX/SX Operating Instructions
Operation of the 2401CX/SX power supply is quite simple and straight-forward. In addition to the general power supply instructions, please read the following to insure top performance and reliability from your 2401CX/SX.

Set Combine/Isolate switches for desired ratio of power to light unit(s). See the chart on the side of the power supply or page 16 for ratio combinations that are possible with up to six light units.

Set Fast/Slow switch. Normally, you will operate the unit in fast recycle mode. However, if you do not have adequate power in your studio or you are using multiple power supplies on the same circuit, this may cause circuit breakers in your studio to blow. In this case, use slow recycle mode.

Connect power supply to AC outlet.

Turn Power switch on. Power On and Ready indicators will illuminate. After 3 to 5 seconds, Ready indicator will extinguish and an audible click will be heard. This click is the interlock relays actuating and applying power to the charging circuits. After approximately 2 seconds, the Ready indicator will illuminate, indicating 100% power. The unit is now fully charged and ready to fire. The Ready indicator light will periodically flicker. This is normal and indicates the operation of the voltage regulator.

Do not immediately fire the unit on the first use or when the unit has been idle for periods over 3 weeks. Allow several minutes for the power supply's capacitors to form. When the power supply has been used recently you may fire the unit immediately. Push to Flash button may be depressed to verify proper system operation.

When Power is on, be sure Ready indicator is illuminated before switching Power or Fast/Slow controls. Do not move these switches while the unit is recycling.

When disassembling the system, turn Power switch to the off position. The 2401CX/SX power supply will automatically discharge its storage capacitors. Do not push the Push to Flash switch before turning power supply off. This may damage power supply. Power supplies may flash their light units when turned off. This is normal.

Unplug power cord from outlet, then disconnect light units from power supply.

2403CX Description of Controls
Power - turns power supply on and off.

Model Light - turns model lamps on and off.

800Ws Isolate/Combine when in isolate, this switch isolates the 800Ws channel from the 1200Ws channel and provides two Light Unit Outlets per channel. When in combine, will provide 2400Ws among 4 Light Unit Outlets.

400Ws Isolate/Combine - when in isolate, this switch isolates the 400Ws channel from the 1200Ws channel and provides two Light Unit Outlets per channel. When in combine, will provide 1600Ws among four Light Unit Outlets. (With both 800Ws and the 400Ws switches in combine, 2400Ws is available through any of the six Light Unit Outlets, divided equally. See diagrams on the side of the power supply for detailed examples of the ratio system).

Variable Power Control - simultaneously controls power of all three channels, with ten positions down to -3 stops (1/8 power). Power ratios among the light units are unaffected since there is a proportional change in all power levels.

Recycle Rate - controls recycle rate.

Charge/Ready/Push to Flash - red Charge light is illuminated whenever the power supply is charging up or down to the selected level. Green Ready light is lit whenever the 2403CX is fully charged to the selected power level. An audible beep will sound when the green Ready light comes on. Push to Flash button is for manual triggering of flash for testing or open flash application.

Remote - for use with optional Remote Variable Power Control (#11237) to allow exposure bracketing from the camera position. The Variable Power Control must be in the full position for the power levels to be correctly indicated by the remote control.

Sync - socket to connect camera or slave to power supply.

Power Input - socket for AC power cord.

Light Unit Outlets (6) - sockets for connecting from one to six light units to power supply.

2403CX Operating Instructions
In addition to the general power supply instructions, the following information and techniques are crucial for the proper use and care of the 2403CX power supply.

Set Isolate/Combine switches and Variable Power Control as desired. See the side of the power supply for various ratio combinations. With the Variable Power Control in the Full position, power is determined by the choice of outlets and position of ratio switches. The Variable Power Control simultaneously changes the power level of all three channels. Rotating the Variable Power Control immediately adjusts the power level of the 2403CX. The power supply does not need to be discharged between settings.

Turn Power Switch on. The red Charge indicator will illuminate. After a few seconds, the green Ready indicator will illuminate and an audible beep will sound. (The beep will not be produced when a very small power change is made. Changing the power level by a third f-stop or so is done very rapidly with the 2403CX; the Ready light will usually remain on) The power supply is now charged to the selected level, and ready to fire. Do not immediately fire the unit on the first use or when the unit has been idle for periods over 3 weeks. Allow several minutes for the power supply's capacitors to form.

Push to Flash button may be depressed to verify proper system operation.

When Power is on, be sure Ready indicator is illuminated before switching Power or Fast/Slow. Do not move these switches while the unit is recycling.

When disassembling the system, turn Power switch to the off position. The 2403CX power supply will automatically discharge its storage capacitors. Do not push the Push to Flash switch before turning power supply off. This may damage power supply. Power supplies may flash their light units when turned off. This is normal.

Unplug power cord from outlet, then disconnect light units from power supply.

4803CX Description of Controls
Power - turns power supply on and off.

Model Light - turns model lamps on and off.

Isolate/Combine (left switch) - when in isolate, the two left Light Unit Outlets provide 800 and 1600Ws, respectively. When in combine, one left Light Unit Outlet provides 2400Ws or with two light units installed, each provides 1200Ws. The two middle Light Unit Outlets provide 1200Ws each when two light units are installed, or 2400Ws when one is used.

Isolate/Combine for Model 206VF Light Units (right switch) - when in isolate, each special 206VF Light Unit Outlet provides 2400Ws, whether one or two 206VF light units are attached. When in combine, a single Light Unit Outlet provides 4800Ws. With two 206VF light units attached, each Light Unit Outlet provides 2400Ws. Use of both standard and special outlets can produce numerous additional lighting possibilities.

Variable Power Control - simultaneously controls power of all three channels, with ten positions down to -3 stops (1/8 power). Power ratios among the light units are unaffected since there is a proportional change in all power levels.

Recycle Rate - controls recycle rate.

Charge/Ready/Push to Flash - red Charge light is illuminated whenever the power supply is charging up or down to the selected level. Green Ready light is lit whenever the 4803CX is fully charged to the selected power level. An audible beep will sound when the green Ready light comes on. Push to Flash button is for manual triggering of flash for testing or open flash application.

Remote - for use with optional Remote Variable Power Control (#11237) to allow exposure bracketing from the camera position. The Variable Power Control must be in the full position for the power levels to be correctly indicated by the remote control.

Sync - socket to connect power supply to camera or slave.

Power Input - socket for AC power cord.

Light Unit Outlets (6 ­ 4 standard, 2 for 206 light units only) - sockets for connecting from one to six light units to power supply.

4803CX Operating Instructions
The following sequence of operation should be utilized for maximum life and dependability of the 4803CX power supply.

Make sure that the Model and Power switches are in the off position and the Reset button (circuit breaker) is fully depressed into its socket.

Connect light unit cable(s) to the Light Unit Outlet(s) on the power supply, selecting the appropriate outlet(s) for the desired power level. Any Black Line Universal Light Unit may be attached to the left and center Light Unit Outlets. Only Model 206VF light units may be attached to the right Light Unit Outlets. (See Universal Light Units section of this manual for information on assembling light units.)

Set Isolate/Combine switches and Variable Power Control as desired. See the side of the power supply for various ratio combinations. With the Variable Power Control in the full position, power is determined by the choice of outlets and position of ratio switches. The Variable Power Control simultaneously changes power of all three channels. Rotating the Variable Power Control immediately adjusts the power level of the 4803CX. The power supply does not need to be discharged between settings.

Turn Power switch to on position. The red Charge indicator will illuminate. After a few seconds, the green Ready indicator will illuminate and an audible beep will sound. (The beep will not be produced when a very small power change is made. Changing the power level by a 1/3 f-stop or so is done very rapidly with the 4803CX; the Ready light will usually remain on and the beep will not sound.) The power supply is now charged to the selected level, and ready to fire.

Do not immediately fire the unit on the first use or when the unit has been idle for periods over 3 weeks. Allow several minutes for the power supply's capacitors to form. When the power supply has been used recently you may fire the unit immediately. Push to Flash button may be depressed to verify proper system operation.

When Power is on, be sure Ready indicator is illuminated before switching Power or Fast/Slow. Do not move these switches while the unit is recycling.

When changing light ratios by moving light cables, we recommend that you turn the power supply off. Though arc-protection is included with all Speedotron systems, the safest method for changing ratios is to turn the power off before moving the light unit cables.

When disassembling the system, turn Power switch to the off position. The 4803CX power supply will automatically discharge its storage capacitors. Do not push the Push to Flash switch before turning power supply off. This may damage power supply. Power supplies may flash their light units when turned off. This is normal.

Unplug power cord from outlet, then disconnect light units from power supply.

Explorer 1500
The Explorer 1500 is unique in the Speedotron Black Line lighting system. It can travel throughout the world using batteries that can be recharged on the local power mains. The full line of Black Line lights and accessories can now be used on location without the need to haul bulky gas powered generators.

The Explorer 1500 is among the fastest, most powerful battery powered flash systems in the world. This is professional equipment and therefore it requires some care on the part of the operator. All reasonable care and precautions should be followed. The Explorer can overheat and be damaged if it is abused. You can check this by simply placing your hand against the end of the case; if it's too hot to hold your hand there, turn it off and give it a rest. Proper battery maintenance is important for longest life, so read and follow the suggestions in the Explorer 1500 Appendix.

Explorer 1500 Description of Controls
1) Power — Turns power supply on and off. This switch controls only the circuits inside the power pack section. Do not detach battery module while the power is turned on. When this switch is turned on, the red POWER LED will light, indicating that the unit is operating. When the power reaches the voltage set by the Variable Level Control, the green READY LED will come on and a brief beep will be heard.
Insure that this switch is in the off position when the Explorer is transported or stored to prevent battery drain.

2) Modeling Light Switch — Spring-return switch starts the modeling lights for 8 to 10 seconds. Pressing the switch again during modeling light operation will have no effect. Pressing the switch immediately after the modeling lights turn off will start another operation period.
Do not exceed 300 watts total between all model lamps. 100 or 150 watt model lamps should be used. Do not use 250-watt model lamps - This overloads the battery circuit! Modeling lamps should be used sparingly. A single 10-second use of 150-watt model lamps uses as much battery charge as two flashes at 1500 watt-seconds!

3) On LED — RED LED indicates power is turned on.

4) Ready LED — GREEN READY LED indicates that the capacitors are within 1/10 F-stop of the value set by the Variable Level Control. Dialing the control up or down will result in a not-ready condition and it will take some time (not much!) to reach a ready condition again.

5) Ratio Switch — Isolates or combines the two Light Unit Outlets. When the Ratio Switch is in the A+B position, the entire pack is connected to both outlets. If a single light unit is plugged into either outlet, it will receive the whole charge from the capacitors. If two light units are connected, they will share the power equally.

6) Light Unit Outlets — Two Black Line outlets accept existing Speedotron Black-Line Light Units. The two outlets are labeled 1000 W-S and 500 W-S. This is the maximum power that can be drawn from the outlets with the Ratio Switch in the A/B position. Turning the Variable Level Control down from full power will reduce the power available from both outlets, but the ratio between the outlets will remain 2 to 1.
Fan-cooled light units will operate, but the fans will not run. This could cause a build-up of heat that could damage the lights.

7) Variable Level Control — Controls power pack power for both Flash Unit Outlets continuously from Full to Minus 5 f-stops. When power is dialed down, an internal discharge circuit dumps only the power needed to reduce the charge to the new level so battery power is conserved by not requiring the Explorer to flash.
Hint: Battery power may be conserved when bracketing exposures by making the lowest power exposure first and increasing power for the remaining exposures. This reduces the need to dump power through dialing down.

8) Slave Trigger — The Photocell senses nearby flashes and fires the Explorer. The slave trigger is disabled when a sync cord is connected. The slave trigger responds only to rapidly increasing light levels, such as a strobe flash. It is highly immune to ambient light of any level, including direct sunlight. High ambient light levels reduce sensitivity - it is most sensitive in a dark room, least sensitive in tungsten or sunlit areas.

9) Sync Socket — The Low voltage sync socket accepts a 1/4” phone plug. The sync circuit applies less than 5 volts to the camera's circuitry. This is compatible with virtually all cameras. When a sync cord is connected, the photocell slave is disabled.

Low Battery Warning — A fully charged battery should give at least 200 full power flashes. After that a beeper will sound indicating the battery charge is low enough to give only a few if any full power flashes. You should change to a spare battery at this point since continued use will discharge the battery far enough that the Explorer would quit operating. The Explorer will quit before the battery is discharged to a point that will damage the battery, but the battery should be recharged at the earliest opportunity.

Caution — This power pack does not power the fans in light units. Be aware that excessive flashing or modeling light operation can cause overheating. The modeling light power source in the power pack will run 300 watts of lights for several 10-second intervals without overheating. It may run higher powers, but DO NOT use higher power lamps! The Explorer will overheat! It CAN overheat and damage itself if it is abused.

Battery & Charger Module (The Juice Box)
The Battery and Charger module, referred to as The Juice Box, contains two batteries and an off-line battery charger. The Juice Box must be attached to the Power Pack at all times during operation. The Power Pack receives all its power from the battery even when the Explorer is plugged into the wall.

Attach the Juice Box to the Power Pack. The ON-OFF Switch on the Power Pack must be in the OFF position. The plug on the Juice Box connects to the plug on the bottom of the power pack. Insure that these plugs connect and then latch the four fasteners at the ends of the units.

To change to a spare battery, turn off the ON-OFF Switch, open the four fasteners as shown in the photo, (above) then lift the Power Pack off the Juice Box, then attach the spare Juice Box.

Battery life is estimated to be about 5 years if kept charged & not deeply cycled. Battery life is reduced by deep cycling - the battery is limited to 300 to 500 full charge-discharge cycles. Reduced depth of discharge will give more cycles.

It's OK to charge batteries while using the unit. This will insure the batteries are kept in top condition.

It's OK to separate or mate the Flash Pack while the batteries are on charge.

DO NOT separate or connect the Power Pack to the battery while the Power ON-OFF switch is turned on.

The battery can be used over a temperature range of -10°C (14°F) to 45°C (113°F). Battery performance drops off rapidly below -10°C. Do not charge the battery if the battery temperature is above 45°C.

Appendix --- Battery and Charger Details

Background - Chemistry of Lead
A lead-acid battery wants to be kept charged to keep its chemical system in equilibrium. For longest life, it should be kept at a constant voltage (the "float" voltage) when not in use. If it stands uncharged, it will self-discharge over a period of about one year at room temperature. The discharged state causes degradation of the materials in the cells. Lead-acid batteries should be kept in the charged state whenever possible.

3-Stage Charger
The best way to charge a multi-cell lead-acid battery is to slightly overcharge it to equalize the charge state on all the cells. The overcharge cannot be continued indefinitely because it eventually would dry out the cells through electrolysis of the water in the electrolyte. A 3-stage charger is the best design to accomplish this.
The charger operates in three modes:

Fast Charge Mode
A constant current in a reasonable range is fed to the battery to convert the active materials to the charged state in a reasonable time. On the low end, the charge rate must be high enough to keep recharge time in a reasonable range.
Most sealed lead-acid batteries want between 0.2 and 0.3 times the battery capacity in amp-hours for the maximum charge current. A 9 amp-hour battery wants between 0.2 x 9 AH = 1.8 amps and 0.3 x 9 AH = 2.7 amps for best life.
The battery can accept more current when at a low state of charge. Fortunately, a low state of charge means the cell voltage is lower, so the charger can deliver a higher current until the voltage rises to some limit.

Slow Charge Mode
Slow Charge Mode limits the voltage to a range around 14.4 volts at room temperature, until all the cells become charged & the current falls to a lower level.

Trickle Charge Mode
When charge current at the Slow Charge Mode voltage falls to about 1/4 of the Fast Charge Mode current, all the cells in the battery are nearing full charge. The voltage can then be reduced to the Trickle Charge Mode voltage, around 13.6 volts at room temperature. At this point the battery is between 90% and 95% charged. It will complete charging to 98% capacity over the next 3 to 5 hours, and reach 100% capacity overnight. The battery should be left on Trickle Charge Mode when not in use for maximum life.

Indicator LED
The indicator LED changes color from red to green when the charger switches to Trickle Charge Mode. It may blink during the transition from Slow Charge Mode to Trickle Charge Mode.

Temperature Compensation
The charging voltage limits are adjusted for temperature to avoid overcharge at high temperatures and undercharge at low temperatures.

Power Cord
Unit is supplied with a US cord. This can be replaced by any GROUNDING 3-conductor power cord to fit local receptacles. Universal input 85-265VAC, 47-63Hz. The unit will work anywhere in the world.

Charge state LED

Red - Fast Charge
This indicates the Fastest charge period.
The charger operates at a higher rate and constant power is delivered until the battery is 70-80% charged. After this period the charging rate slows to complete the charge.

Green - Long term maintenance
The charger is operating in the Trickle Charge Mode.
Leave the battery ON CHARGE for longest life.

It takes a few seconds for the charger to start. When the LED lights (red or green) the charger is operating. During the transition from Fast Charge to Trickle Charge, the LED will blink green for up to a minute while the battery voltage falls to the Trickle Charge level.

Temperature compensated charge voltage insures full charge at any temperature without overcharge. See the specs for temperature range.

Battery life is estimated at least 5 years. Battery life is reduced by deep cycling - the battery is limited to 300 to 500 full charge-discharge cycles. Reduced depth of discharge will give more cycles.

Specifications -
Maximum Flash Power: 1500 WS
Minimum Flash Power: 15.6 WS
Flash Duration w/ 103 Light Unit:
@ 1500 WS 1/825 seconds
@ 1000 WS 1/1100 seconds
@ 500 WS 1/1700 seconds
Recycle Time at 1500 WS: 3.5 seconds
Minimum Power Recycle: 1/4 second
Modeling Light Capacity: 300W total, 10 second bursts
Power Range in Stops: 7+
Light Unit Outlets 2
Ratio Between Outlets - 2:1 or 1:1
Modeling Lamp: yes
Full Power Flashes Per Charge: up to 225
Lowest Power: 2500 plus
Battery Recharging Voltage: 85 to 265 volts (AC input)
Battery Recharge Time: 5 to 10 hours to 95% charge from
fully discharged. Overnight for full charge Batteries remain full if unit is
plugged in & flashed at full power every 45 seconds
Battery Type and Capacity: two 12 volt 9 A-H high rate lead-acid
Photo Slave Cell: Built-in Battery Charge Indicator LED Green indicates at least 95% charged
Low Battery Warning Light: Yes
Size: 9.5” x 5.4” x 11.7”
Weight: 24.8 lbs

Black Line Light Units

General Instructions and Information
· Unpack and examine all equipment carefully.

· Should you notice any breakage or defect, notify your dealer (and carrier if it was shipped to you) immediately. The flash tube(s) and model lamp(s) are packed in their original cartons. This affords sufficient protection and reduces the incidence of breakage during shipping. Make sure all packing materials are removed before using. This includes pipe cleaners (used as packing material) inside flash tubes.

· Install model lamp and flash tubes. Always handle lamps and flash tubes with care. Because they can break if put under stress, handle cautiously.

· Don't touch glass surfaces with your bare hands. When removing or replacing lamps and tubes, always disconnect light units from power supply.

· Allow lamps to cool before handling.

· Flash tubes must be inserted into the sockets all the way. A slight rocking motion may be necessary when installing the larger flash tubes. New flash tubes and sockets fit very tightly. Be sure all flash tubes and model lamps are fully seated into light unit sockets.

· All Speedotron Black Line flash tubes are designed to accept a minimum of 2400Ws.

· Connect light cable(s) to the Light Unit Outlet(s) on the power supply. (For the 202VF/206VF, connect the light unit cable to the light unit before connecting to power supply).

· Never connect or disconnect light units while power is on. Do not insert or remove flash tubes or model lamps while power is on.

· Speedotron power supplies are equipped with arc-protected outlets. However, as with any electrical equipment, arc-over (an electrical discharge between two physically disconnected electrical terminals) is a possibility. When light cables or flash tubes are improperly seated, arc-over may occur. Also, if your light unit or power supply malfunctions, or the power cord or internal wiring in the studio is improperly terminated or defective, there is a possibility of arc-over when connecting or disconnecting the light units. Severe power supply damage and operator injury may result if arc-over occurs. That is why in spite of the arc-protection feature of Speedotron units, you should always make sure power is off when connecting or disconnecting light units.

· Light units come with a 5/8" light stand mount. The umbrella bracket is drilled to accept 3/8" diameter umbrella shafts (must be used with 7" reflector). The umbrella bracket may be moved to a position closer to the light unit body to accept special umbrellas and accessories. When using this alternate position the reflector will have to be custom drilled to accept the umbrella shaft.

· Install the desired reflector into the light unit. Align the round notches on the reflector with the nylon buttons on the light unit, then twist firmly clockwise, (viewed from front and insuring that reflector assembly is bottomed on mounting socket) approximately 1/4 of a turn. This should securely mount the reflector into the light unit housing.

· Turn on power supply, wait for Ready light, then press Push to Flash button to verify proper operation. At this time, if you have a fan cooled unit (all except the 103B), the fan should be operating. The model lamp is controlled by the Model switch at the power supply. Some light units also have a Model switch on the top or side of the light unit.

· For maximum performance and tube life, the model lamp should be used only when necessary and turned off after initial set-up or focusing is done. Although the forced air cooling is more than ample for normal usage, turning off the model lamp will eliminate heat and enable the light to run cooler, extending the life of all components.

· After extended use, inspect flash tubes for cracks and any unusual darkening (arc-over) around the plugs. This is particularly important for multi-tube flash lights. If cracks or darkening are noted the flash tube is, most likely, near the end of its duty cycle. Cracked tubes will probably misfire. The normal life expectancy is 100,000 flashes for the majority of Speedotron Black Line flash tubes.

· Be sure replacement flash tubes are designed for the watt-second output requirements of Speedotron light units. Never subject a flash tube to more watt-seconds than it is designed to handle. Applying too much power severely shortens the life of flash tubes, may cause fine cracks to develop in the tube that may cause tube failure or, in the most extreme case, may cause a tube to shatter. For this reason, we suggest you always use Speedotron flash tubes and model lamps to insure safe and dependable operation.

Model 102 Light Unit
This general purpose, heavy duty light unit includes a quiet, high-efficiency cooling fan. It comes standard with the 11.5" universal grid reflector.

For operating instructions, follow the guidelines in the General Information section of this manual

Model 103B Light Unit
Speedotron has added this new slim-body traveler to its economical and popular 100 Series. This compact light plugs into any Black Line power supply and accepts any universal Black Line accessory. The 103B also features a fully detachable cable for easier packing and handling. This efficient convection-cooled unit is offered with color-corrected or clear flash tubes which are rated to an ample 2400 watt-seconds maximum.

For operating instructions, follow the guidelines in the General Information section of this manual.

Model 202VF Light Unit
This extremely portable, modular, heavy duty light unit has noiseless fan cooling. Reflectors mount to the red focusing collar, offering a wide range of coverage.

Assembly of the 202VF is simple. Attach the pan-tilt bracket to the right side of the light unit with the thumb screw. Turning the pan-tilt bracket handle counter-clockwise allows one-handed positioning of the 202VF. The light unit cable must be attached to the 202VF before connecting to a power supply. Align the flat surface of the molded strain relief plug with the outlet at the back of the light unit. Push the cable straight in, and give the locking ring a 1/3 clockwise turn, until it "clicks".

The red focusing collar is normally mounted with the nylon button forward (although reverse mounting may be better for customized soft boxes or other special-use applications). With a reflector mounted and the focusing collar in the fully forward position, narrow angles and high guide numbers are achieved. When rotated fully back (about 2 full turns), the widest angles and the lowest guide numbers are achieved. The best general results with Speedotron universal reflectors is at the midpoint, about 1 turn back. For soft box use, the fully back position will generally be best.

Umbrellas are mounted through the hole in the 7" umbrella reflector for 202VF, limiting the movement of the focusing collar to four positions.

For other operating instructions, follow the General Information section of this manual.

Model 105, 2 Cable Light Unit
This special purpose, fan-cooled heavy duty light unit has four 2400Ws flash tubes supplied by two power cables. It can be powered by either one or two power supplies. Each cable delivers power to two flash tubes; when one has failed or is missing, the full power (up to 2400Ws) will be sent to the remaining operational tube. Up to 4800Ws may be put through the 2 cable 105. It comes standard with an accessory mounting collar.

Follow the general operating instructions in the General Information section.

Model 105, 4 Cable Light Unit
This special purpose, fan-cooled heavy duty light unit operates at short flash durations. It is ideal for stopping motion. It has four flash tubes each supplied by its own dedicated power cable. Each cable and flash tube can handle a maximum of 2400Ws, giving this light unit a maximum operating power of 9600Ws (when using two 4803, or four 2400Ws power supplies). One to four power supplies may be used to power the 105 when slaves are employed to trigger the additional packs. The cable marked with a red band operates the modeling lamp and fan circuits. Designed for light bank mounting, an accessory mounting collar is included with the 105.

For operating instructions, follow the guidelines in the General Information section.

Model 206VF Light Unit
This heavy duty light unit operates directly with the 4803 power supply or on all standard outlet power supplies using the #14202 adapter cable. Its single, fan-cooled flash tube can handle up to 5000Ws maximum. It is equipped with a larger plug for use on the 4800Ws outlets on the 4803. Standard with 11.5" universal grid reflector.

See the General Information and 4803 power supply sections for additional operating instructions.

General Maintenance and Care
All Speedotron Black Line equipment is ruggedly built. Nevertheless, it should be treated with the same care given to other pieces of quality photographic equipment. To protect the user, all Speedotron equipment is designed to be safe when used in accordance with instructions. To assure the maximum in safe, dependable service, the following guidelines should be carefully observed.

· Avoid kinking or pulling cables. Disconnect cables by pulling on the plug only. Never pull plugs out by the cable. Light cables as well as sync cords and AC power cords should be occasionally checked for wear, cracks, separation between cable and plug, and for indications of arc-over.

· Do not wrap the light unit cables around the light units. Coiling cables tightly stresses the internal wires and may lead to premature cable failure. If possible, keep the coil diameter at least 10 inches.

· If a cable becomes frayed, the insulation damaged, or the connectors bent or broken, have them repaired immediately.

· Keep all connectors, plugs and sockets free of dust, moisture and corrosion.

· Do not connect or disconnect light units or insert or remove flash tubes while the power supply is on.

· When using your equipment, be sure all cable, sync, power and flash tube connections are completely and properly installed.

· Do not attempt to make repairs to your Speedotron equipment yourself. It is very dangerous, and will void your warranty. Consult your dealer regarding authorized service in your area, or return the equipment to Speedotron. When you are not using your equipment, it is recommended that you store it in a dry place. Equipment should be charged up and flashed a few times at least once a month. This will keep your equipment in top working condition for many years.

· With your light unit disconnected, occasionally remove the reflector and clean the interior surface with a light solvent or soap and water. Carefully remove the flash tube, and clean the glass cover. Only in this way will you conserve a consistent color temperature and light output. Dirt and dust deposits on the tube and reflector act like a filter to alter color.

· To extend the life of the model lamp, it should be turned off after set-up and focusing.

Trouble-shooting
System will not work at all; no flash.
Check that sync cable, AC power cord and light unit cables are firmly and properly attached. Check that the flash tube is firmly seated. Check that Power switch is on.

Occasional failure of all light units to flash.
Check sync cable and light unit cable connections. Make sure that the Ready indicator is illuminated before attempting to fire unit.

Occasional failure of one light unit only.
Check light unit cable connection. Inspect the cable. Check flash tube. Make sure that the Ready indicator is illuminated before attempting to fire unit.

Reduced light output.
Check to see if Ratio or Variable Power Control switch is in right position. Check flash tube; check power supply by comparing to similar pack with same light units if possible.

Flash tube glows after a flash (afterglow) and will not flash again until glow is gone.
If confined to one light unit, check flash tube by substitution. If it continues or all lights afterglow, power supply is at fault. If this is the case, turn power supply off immediately! Power supply needs repair.

Ratio or Variable Power Control switch has no effect on recycle time or light output.
Power supply needs repair.

Circuit breaker on power supply pops.
Check that all cables on power supply and light units are properly connected. Also check for afterglow. If a circuit breaker blows, it is an indication that something is wrong. Normal operation will not blow circuit breakers.

Circuit breaker or fuse in studio blows.
Use slow setting on Recycle rate switch.

When checking power supplies, light units and cables, be sure that Power is off. Look for blackened, discolored or burned pins and sockets. If a Light Unit Outlet on the power supply is burned, blackened or discolored, it must be replaced before it is used. It could damage light units that are connected to it. Check that cables are not loose or frayed.