General Dynamics C4 Systems URC-200 (V2)
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c. Verify the 8kHz waveform pattern on the screen of the R2600 has an amplitude of 4 VPP
to 24 VPP. Verify the square wave pattern is the same as it was with a -50dBm signal
except for the slight jumping around of the 8kHz pattern. It may be helpful to observe the
8kHz pattern as the RF input level is decreased. The jumping around of the pattern will
turn into a random breakup of the pattern.
d. On both the URC-200 (V2) and the R2600 repeat steps A through C for preselect
channels 2 through 9 and channel 0 on the URC-200 (V2) with the R2600 set on preset
channel 10.
5.3.2.5 CT Audio Response
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 T (CT 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 08.
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 312.000
from the R2600 keypad.
e. Move the cursor to Modulation Type and press the "FM" soft key.
f. Move the cursor to the Generate Frequency position and enter 312.000 from the R2600
keypad.
g. Move the cursor to Modulation Type and press the "FM" soft key.
h. Move the cursor to bandwidth and press the "NARROW ±5 kHz" soft key.
i. Move the cursor to the Duplex Offset position and press the "DON'T CARE" soft key.
j. Move the cursor to Synth. Format Sel (synthesizer format select) and select the "Tone A"
soft key.
k. Move the cursor to Freq (frequency) and enter 01000.0 from the keypad.
l. Move the cursor to the DTMF Code position and press the "DON'T CARE" soft key.
NOTE
The “more” soft key may have to be depressed for the “DON’T CARE” soft
key to be displayed.
m. Press the "return" soft key twice.
4. Perform the following steps to complete the setup on the R2600 analyzer.
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