General Dynamics C4 Systems URC-200 (V2)
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7.1.3.4 System Functional Test
To test the setup, key the transceiver by pressing the PTT switch on the attached audio
interface. Before keying, the BYPASS LED on the power amplifier should be lit. When
keyed, the URC-200 will display a “TX” symbol on the LCD display, and the power
amplifier’s BYPASS LED will turn off. When PTT is released, the BYPASS LED
should return to a lit state. If these events occur, the system has been set up correctly
(assuming the desired power, band, modulation, and other settings are correct on both the
transceiver and the power amplifier). If these events do not occur, refer to paragraph
7.1.4 for troubleshooting.
7.1.4 Rack Mounted Base System Troubleshooting
When troubleshooting, check the Rack Mount System setup to ensure that the UPA-55H
and URC-200 are both powered and connected correctly. Also check the configuration
settings (power level, modulation, frequency band, etc.) to ensure they are configured to
corresponding settings. For specific troubleshooting of the Rack Mounted System, refer
to Section 5, UPA-55H Manual (99-P44032F), or Section 5.0 of this document.
7.1.5 Rack Mounted System Remove and Replace Procedures
Figure 22 depicts the Rack Mount System, as installed. In order to remove one of the
four components (power amplifier, power supply, power interface box, or transceiver), it
may be necessary to uninstall the rack mount tray from the 19” rack, depending on
accessibility to the components and their mounting screws/brackets, etc. The following
sections outline the procedures for removing the rack mount tray or one of the system
components. Figure 23 depicts the tray’s hardware, for reference during component
removal.
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