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Cable Transmitter
Power Supply
The Cable Transmitter Power Supply plugs into the remote display where a regular DCI battery pack is
normally placed. The power supply has three wires extending from it. The green and black wires should
be connected to a DC power source (green is positive, black is negative). The white wire is connected to
the cable transmitter (see sketch later in this section called “Connecting Cable Transmitter to Power
Supply and Remote Display”).
The power supply has the following features:
¾ There is an on/off button on the power supply that will disconnect power to the cable transmitter.
Power should be disconnected any time connections are made or broken. The red indicator light will
illuminate when power is supplied. To power up the Cable Transmitter System, it is necessary to turn
on both the remote display and the power supply.
Power Supply
Remote Display
On/Off Button
Cable (w/ Green,
Black, and
White Wires)
Cable Transmitter Power Supply Connected to Remote Display
¾ The power supply controls and limits the power to the cable transmitter. In the event of a short circuit,
power will be disconnected from the transmitter automatically. The power supply indicator light will go
out, and the transmitter will shut down. This condition can be corrected by eliminating the short
circuit. If the fault condition has been corrected, the power light will come back on automatically and
power will be restored to the transmitter.
¾ The power supply requires an input voltage of 12V to 28V DC.
¾ The power supply must be turned off at the end of the day to avoid overheating the cable transmitter.
NOTE: Do not use the drill’s power system as a source of power for the remote display and power sup-
ply. Run separate battery(ies) directly to the power supply, not through the auxiliary system on the drill.
The Cable Transmitter System can pick up electrical interference and noise introduced through the drill’s
power system.
DigiTrak
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Mark III Operator’s Manual 59