User's Manual

4-26
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 4-3 on the URC-200 (V2). For each preset
channel, adjust the URC-200 (V2) for the following. Note: Information on presetting the
URC-200 (V2) is given in Paragraph 2-3.2 located in Section 2 of this manual.
FM, LO POWER, CT, SCN OFF, BCN OFF
6. Transmitter FM CT Deviation and Distortion 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 FM deviation on the R2600
screen. Verify compliance with Table 1-1 in Section 1 of this manual. Note: In keying
the transceiver the PTT line, pin F, will be grounded.
c. Observe the scope display on the R2600, it should be showing a pseudo square wave
1 kHz signal.
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.
4-2.3.4 AM Power Output, PT % Modulation and PT Distortion
1.
Set up the test equipment as shown in Figure 4-2. Connect the
VERT/SINAD/DIST/DVM/COUNTER IN connector to the DEMOD connector on the
R2600. Connect the R2600 MOD OUT port to pin H of the X-Mode connector on the URC-
200 (V2). Do not connect the PTT (Push-to-Talk) line (pin F) to ground. Note: When the
PTT line is grounded the URC-200 (V2)'s transmitter will key itself ON.
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 01.
c. Press the "view preset" softkey. Note: The softkeys are the eight keys under the CRT
screen on the R2600.
d. Using the CURSOR POSITION keys move to the Monitor Frequency position and
enter 115.000 from the R2600 keypad.
e. Move the cursor to Modulation Type and press the "AM" softkey.
f. Move the cursor to the Generate Frequency position and enter 115.000 from the
R2600 keypad.
g. Move the cursor to Modulation Type and press the "AM" softkey.
h. Move the cursor to bandwidth and press the "NARROW 5kHz" softkey.
i. Move the cursor to the Duplex Offset position and press the "DON'T CARE" softkey.
j. Move the cursor to Synth. Format Sel (Synthesizer Format Select) and select the
"Tone A" softkey.
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" softkey.
Note: The "more" softkey may have to be depressed for the "DON'T CARE" softkey to
be displayed.
m. Press the "return" softkey. Repeat steps A through K for presets 02 through 10. Use
Table 4-4 to program the frequency presets in steps D and E above.