Shure UC1L Service Manual page 18

Shure UC1 Body-Pack UHF Transmitter
Deviation Adjustment Voltage: Using a UC4 or U4S Receiver
S501
(TONE KEY SWITCH)
UC4 Receiver
Output: Unbalanced
Gain: Maximum
Squelch: Mid
Tone key (S501): ON
Service Procedures
AUDIO ANALYZER
UC1 Transmitter
Power: + 9 Vdc
Gain: Minimum
Figure 9. Deviation Adjustment Voltage Test Set-Up,
Steps 7 through 8, Using a UC4 or U4S Receiver
7. Connect the BNC end of the test cable that is soldered to W101
and GND to the antenna A or B inputs.
8. Turn ON the UC1 and adjust R149 until the audio volt-meter
connected to the unbalanced output of the UC4 reads the same
as the deviation reference voltage , measured above,
R149 adjusts the deviation for 45 kHz, 100% modulation.
18
R149
W101
GND
UC1, SIDE 1
Audio Analyzer
Measurement: AC level
Output: 1 kHz
Filters:
Low-Pass (30 kHz): ON
High-Pass (400 Hz): ON
0.1 dB.
25A1043 (RI)