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One light: Symmetrical mode in any outlet, will receive 600Ws.
Asymmetrical mode in outlets 1 or 2, will receive
600Ws; when using outlets 3 or 4 output is 450Ws.
Two lights: Symmetrical mode, all outlets share an equal amount of
power. Two lights each receive 300Ws (600Ws divided by 2).
Asymmetrical mode
Combination 1: one light in outlet 1 or 2 receives 300Ws;
the second light in outlet 3 or 4 receives 150Ws.
Combination 2: in outlets 1 and 2 receive 300Ws each.
Combination 3: in outlets 3 and 4 will receive 150Ws each.
Following the table will quickly illustrate other combinations that are possible with up to
four light units on the D604.
Divide watt-seconds by 2 when using half power.
600
450
300 150
300 300
150 150
75 75300
210
210 105
180 180 45 45
POWER DISTRIBUTION TABLES
On the side of the D604, D1204 and D1604 power supplies there is a Power Distribution
Table based on the full power setting. These tables should be used as guides for deter-
mining various lighting possibilities, guide numbers and exposures when using consistent
flash tubes and reflectors. When different flash tubes and/or reflectors are used actual
light output will vary, producing as much as a full f/stop discrepancy with the table.
Brown Line '04 power supplies, feature symmetrical and asymmetrical operation.
Symmetrical output means all light units share equal output. To determine power levels,
divide the maximum output by the number of light units to be used. In asymmetrical
mode, outlets 1 and 2 receive a greater portion of the total output than outlets 3 and 4.
(For specific power distribution refer to the charts below for the number and configura-
tion of the lights to be used.)
Turn on
Power and Model switches. Wait until the green Ready/Push to Flash illumi-
nates and press to check if the unit is operational. The light unit(s) should flash instantly
when this button is pressed. If you wish to check the function of each individual light unit,
we recommend that you turn off the Model switch and hold your hand in front of (not
inside) the light unit to be tested. When you fire the unit you will feel the heat of the
flash. This method is suggested because it is often difficult to determine by sight if one
of the lights has failed to flash.
The D604, D1204 and D1604 power supplies are equipped with an audible ready
signal (may be turned off) and high temperature alarm. A short audible tone along with
a green Ready/Push to Flash light indicates that the power supply has recycled to 85
percent (ANSI standard). For very critical exposures, waiting several seconds after the
green Ready/Push to Flash light illuminates will ensure that the power supply is at 100
percent power. If the beep should prove distracting, depress the Audible Recycle switch
to eliminate this short tone. The green Ready/Push to Flash light will still continue to
illuminate.
Prolonged rapid flashing or storage in a high temperature environment (like the trunk of
a car) or extended use in extremely warm environments may eventually produce enough
heat to set off a steady alarm tone and red Hi-Temp LED indicator. The power supply
should be turned off at the Power switch because continued use may cause severe dam-
age. When the power supply has sufficiently cooled, normal operation may be resumed.
(If the power supply is not turned off, the alarm will not clear.)
When the power supply has been exposed to extreme cold weather for an extended
period of time, it is suggested that the unit be allowed to warm up to room temperature
before connecting it to an AC power line.
When disassembling the system, turn off Power and Model switches first. When the
Power switch is turned off, the power supply will discharge by flashing all light units.
Placing the Full/Half/1/4 switch into the full position before turning off Power will
ensure that all capacitors are discharged. If the power supply should be inadvertently
switched off at a lower power setting, DO NOT immediately switch to full power!
Damage to the switch may result. Wait at least 10 seconds before operating the
Full/Half/1/4 switch. Unplug the power cord and disconnect the light head cable(s).
D604 Power Distribution Table
Symmetrical
Any socket(s)
Asymmetrical
1 or 2 3 or 4
1 Light
600Ws
2 Lights
3 Lights
4 Lights
300Ws
200Ws
150Ws
2:1
1:1
4:1:1
2:2:1
4:4:1:1
1:1