Shure UC2 Hand-Held UHF Transmitter
Service Procedures
19
25A1044 (RI)
Deviation Adjustment Voltage: Using a UC4 or U4S Receiver
AUDIO ANALYZER
S501
(TONE KEY SWITCH)
RF
SIDE 1
R320
VCO
20 dB
UC4 Receiver
UC2 Transmitter
Audio Analyzer
Output: Unbalanced
Power:
+ 9 Vdc
Measurement:
AC level
Gain: Maximum
Gain:
Minimum
Frequency Output:
1 kHz
Squelch: Mid
Filters:
Tone key (S501): ON
Low-Pass (30 kHz):
ON
High-Pass (400 Hz):
ON
Figure 11.
Deviation Reference Voltage Test Set-Up,
Steps 4 through 6, Using a UC4 or U4S Receiver
4. Connect the unbalanced output of the UC4 to the input of the
audio analyzer (ac voltmeter).
5. Connect the BNC end of the cable from the rf output of the UC2
to the antenna input of the UC4 through a 20 dB in line pad.
6. Turn the transmitter ON and adjust R320 until the ac voltmeter
on the receiver reads the same as the
deviation reference
voltage, measured above,
±
0.1 dB; or
±
0.2 dB for JA, JB
frequencies..
