General Dynamics C4 Systems URC-200 (V2)
102
NOTE
The “more” soft key may have to be depressed for the “500 us” soft key to
be displayed.
n. Move the cursor to the Vert (Vertical) position and depress the "200 mV" soft key.
NOTE
The “more” soft key may have to be depressed for the “200 mV” soft key
to be displayed.
o. Move the cursor to the Pos (Position) position and depress the "move up" or "move
down" soft keys as appropriate to center the displayed scope screen trace. The TUNING
knob on the R2600 panel may be used in lieu of the "move up" or "move down" soft keys.
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. Set the frequency presets as listed in Table 21 on the URC-200 (V2). For each preset
channel, adjust the URC-200 (V2) for the following:
FM, LO POWER, PT, SCN OFF, BCN OFF
To configure presets, refer to Paragraph 4.4.6.
6. Transmitter Frequency Accuracy and FM Power Output Measurements:
a. Set the presets on both the URC-200 (V2) and the R2600 to channel 01. Verify the URC-
200 (V2) is in the LO POWER mode.
b. Key the transceiver into the R2600 test set and read the frequency error displayed on the
screen. Verify the ppm as listed in Table 1 is within compliance by dividing the frequency
error by the operating frequency. In keying the transceiver the PTT line, pin F, will be
grounded.
c. Measure the transmit power on the R2600 screen. Verify compliance with Table 1.
d. Unkey the URC-200 (V2) and adjust it for MED POWER. Rekey the URC-200 (V2) and
verify compliance with Table 1.
e. Unkey the URC-200 (V2) and adjust it for HI POWER. Rekey the URC-200 (V2) and
verify compliance with Table 1.
f. On both the URC-200 (V2) and the R2600 repeat steps A through E for preselect
channels 2 through 9 and channel 0 on the URC-200 (V2) with the R2600 set on preset
channel 10.
5.3.3.2 FM PT Deviation and Distortion
1. Set up the test equipment as shown in Figure 17.
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