General Dynamics C4 Systems URC-200 (V2)
95
c.
Adjust the SQ (Squelch) control fully counter-clockwise, past its detent, to the OFF
position.
6. Scan Function Measurements:
a. On the R2600 front panel depress the RF key. Move the cursor to the Output Lvl (RF
Output Level) position. Using the TUNING knob on the front panel adjust the RF Output
Level to <-130 dBm.
b. Adjust the Squelch control clockwise until the speaker just squelches. Adjust the
TUNING knob that is adjusting the RF Output Level clockwise until the speaker just
releases squelch. The TUNING knob's resolution may have to be adjusted so it is
controlling tenths of a dB of RF Output Level. To do this, depress the RIGHT or LEFT
ARROW CURSOR CONTROL keys to position the cursor on the RF Output Level's
tenth of a dB position.
c. Set the transceiver to SCAN channels 6 through 8 as described in Paragraph 4.4.6.7.
d. Turn SCN ON as described in Paragraph 4.4.7.1.
e. Adjust SQ control clockwise until speaker squelches. After approximately eight seconds,
the display should show that channels 6 through 8 are being scanned.
f. On the R2600, increase the RF Output Level with the TUNING control until the speaker
releases squelch. The display on the transceiver should now stop scanning and show
Channel 8 (312 MHz).
g. Using the TUNING knob on the front panel adjust the RF Output Level to <-130 dBm.
Select preset channel 6.
h. On the R2600, increase the RF Output Level with the TUNING control, until the speaker
releases squelch. The display on the transceiver should now stop scanning and show
Channel 6 (300.000 MHz).
5.3.2.8 Signal-Strength Meter
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 A of the Remote connector is return ground.
2. Set the input power supply to 28 ± 1 VDC.
3. Preset the R2600 by performing the following steps.
a. Press the MEM (Memory) key on the R2600 panel for the preset-screen.
b. Use the CURSOR POSITION keys to highlight preset 03.
c. Press the "view preset" soft key.
NOTE
The soft keys are the eight keys under the CRT screen on the R2600.
d. Use the CURSOR POSITION keys to the Monitor Frequency position and enter 173.975
from the R2600 keypad.
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