General Dynamics C4 Systems URC-200 (V2)
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variable frequency emergency beacon tone should be audible and visible on the R2600
display.
5.3.4 Power Supply Voltages
The internal power supply in the URC-200 (V2) is located on the Audio, Processor, Power Supply
(APPS) printed wiring board. The power supply has one input voltage (+24 VDC) and five output
voltages (+5 VDC, -5 VDC, +12 VDC, -12 VDC, and +70 VDC).
5.3.4.1 Input Voltage
The input voltage can be measured on pin G of the Remote connector that is located on the front
panel. Depending on what is being used to supply power to the transceiver (batteries, external
power supply, or etc., the normal input voltage can vary from approximately 22 VDC to 34 VDC.
This voltage can also be displayed on the front panel of the transceiver using the R/T key as
described in Paragraph 4.4.7.3.
NOTE
If the transceiver is being operated from batteries and the voltage reading
is below 22 VDC, install fresh batteries in the battery pack.
5.3.4.2 Internal voltages
Six internal voltages can be displayed on the front panel (Table 23). The following table shows the
tolerance range for each. If the input voltage is within the specified range and any of the internal
voltages are out of tolerance, the transceiver should be returned to General Dynamics for repair.
Table 23 - Internal Voltages
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