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Shure U4D Dual Diversity UHF Receiver
33
25D1062 (AG)
Service Procedures
Tone Key Filter Alignment
Reinstall the antennas for the Tone Key Filter Alignment procedure.
VC102
P202
P202
P203
S201
ANTENNA A IN
P202
P202
P203
S201
ANTENNA B IN
U208
DC VOLTMETER
PIN 8
J302
(ON)
(ON)
Figure 17.
Tone Key Filter Alignment Connections
For the following test, make sure the tone key switch (S201) is ON.
1. Turn the tone key switch (S201) to the ON position.
2. Turn the rf signal generator output OFF.
3. Be sure to reinstall the antennas.
4. Program a UHF transmitter (U1 or U2) to the same Group and
Channel as the receiver.
5. Place the transmitter within 1.75 – 3.25 m (5 – 10 ft.) of the
receiver.
6. Adjust VC102 for the maximum dc voltage at U208, pin 8.
Receiver 1 Alignment is now completed.
Summary of Contents for U4D
Page 11: ...Shure U4D Dual Diversity UHF Receiver 10 25D1062 AG Preliminary Tests Audio Rf Board Side 2...
Page 46: ...Shure U4 UHF Diversity Receiver 25D1062 TL 45 U4 Rf Audio Printed Circuit Board Legend Side 1...
Page 47: ...Shure U4 Diversity UHF Receiver 46 25D1062 TL U4 Rf Audio Printed Circuit Board Legend Side 2...