General Dynamics C4 Systems URC-200 (V2)
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p. Adjust both the SQUELCH and VOLUME controls on the front panel to their maximum
CCW positions.
5. Setup the URC-200 (V2) as follows:
a. Turn the transceiver on and note the input current. It should be approximately 240mA. If
the current exceeds 330mA, a problem exists in the transceiver. Turn off the power and
troubleshoot the transceiver.
b. Adjust the URC-200 (V2) for preset channel 8. On the URC-200 (V2) set the frequency
to the preset frequency as listed in Table 21 for channel 8. Adjust the URC-200 (V2) for
the following. See Paragraph 4.4.6 for information on presetting the URC-200 (V2).
FM, CT, SCN OFF, BCN OFF
To configure presets, refer to Paragraph 4.4.6.
6.
CT Audio Response Measurement (1 kHz):
a. Note amplitude of the waveform in Vpp.
7. CT Audio Response Measurement (10 Hz): Measure the 10 Hz audio response by doing the
following on the R2600:
a. Depress the AUD (Audio) key
b. Depress the cursor keys for the Tone A frequency. Adjust it to 10 Hz
c. Depress the DISP (Display) key.
d. Depress the Horizontal key.
e. Depress the cursor control keys for 50 mS.
f. Read and record the amplitude of the waveform in Vpp. This reading should be the same
as the reading in step 6a.
8. CT Audio Response Measurement (10 kHz): Measure the 10 kHz audio response by doing
the following on the R2600:
a. Depress the AUD (Audio) key
b. Depress the cursor keys for the Tone A frequency. Adjust it to 10 kHz
c. Depress the DISP (Display) key.
d. Depress the cursor control keys for 50 uS
e. Read and record the amplitude of the waveform in Vpp. This reading should be 4 to 24
VPP.
5.3.2.6 Squelch Sensitivity
1. Set up the test equipment as shown in Figure 16. Connect the
VERT/SINAD/DIST/DVM/COUNTER IN connector on the R2600 to Pin E (PT OUT) of
the Remote connector. Pin D of the Remote connector is return ground.
2. Set the input power supply to 28 ± 1 VDC.
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