Motorola R-2001A Service Manual page 78

5-140. Scan Mode
1. Set the UUTfortheGen/Mon Mtr display. Verify the proper operation of each of the RF Scan, switch
positions.
5-141. Generate Mode
1. Set the UUTforthe Generate FM Mode at 200 MHz'and select the Gen/Mon Mtr display. Verify an RF
level output display on the CRT.
2. Connect the RF millivoltmeter with a 50 ohm termination to the RF In/Out Jack on the UUT. Set the RF
step attenuator to the O d B position and adjust the Variable Level control to obtain a displayed output
level of +13 dBm. Verify that the RF millivoltmeter reads +13 dBm ±2 dBm.
' 3. Repeat paragraph 5-141.2 except at a center frequency of 800 MHz.
4. Increase the RF Step Attenuator setting in 10 dB increments and verify that the displayed RF level
decreases in 10 dB increments.
5. Set the Code Synthesizer Modulation Switch and the Ext Level Control to their respective OFF
positions. Select the Narrow Band mode and adjust the 1 kHz Level Control for a 5 kHz deviation
reading on the CRT display. Verify a 1 kHz tone at the speaker output.
6. Connect the Modulation Meter to the RF In/Out Jack on the UUT. Set the Modulation Meter for a
deviation display of 5 kHz ±250 Hz.
7. Select the Wide Band mode on the UUT and verify that the CRT displays a deviation of 20 kHz. Also
verify that the Modulation Meter shows a peak deviation of 20 kHz ±1 kHz.
8. Select the Modulation Display on the UUT and verify a peak-to-peak modulation display of 40 kHz ±2
kHz.
9. Select the Generate CW Function and verify that no modulation is present on the CRT.
10. Set the UUT for the Generate AM Function, the Gen/Mon Mtr Display, and adjust for an RF output level
of 0 dBm. Adjust the 1 kHz Level Control for a 50% AM reading on the CRT. Verify that the Modulation
Meter reads 50% ±10% AM.
11. Select the Modulation Display and verify a low distortion 1 kHz sinewave.
12. Set the UUT for the Generate SSB/DSBSC Function and verify a low distortion 1 kHz sinewave on the
CRT.
13. Set the UUT for the Generate SWP 1-10 MHz Function and the Scope DC Display. Verify a horizontal
trace and a center frequency display on the CRT.
14. Set the UUT for the Generate SWP 0.01 - 1 MHz Function and verify the same results as paragraph
5-141.13.
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