Shure T1 Body-Pack Transmitters
14Service Procedures
25C1016 (CC)
tio button to perform the relative measurement in the next sub-
section.
out Audio Analyzer in
O
O
T1P (connector J104)
Pins
1
2
3
4
T1G (
1
/
4
I
phone jack,
J103)
LED (red)
“Low Battery”
(D102)
Mute
Switch
(S101)
Power On/Off
Switch (S102)
“Power On”
LED (green)
(D101)
O
n
M
u
t
e
Battery
Terminals
J101 –
J102 +
C215C217Y201
L209
R217
R125
R130
TP4
TP3
Receiver
1
2
3
4
T1 (Tini “
Q-G,” J201—solder side)
Figure 4. Audio Test Configuration for T1
E: Audio Frequency Response
1. Change the frequency of the audio analyzer to 100 Hz.
2. Deactivate the audio analyzer’s 400 Hz high pass filter.
3. Check that the audio level is equal to –1 dB (0.5 dB) relative to
the level measured at
TP3 in step 3 of subsection D (“Gain”).
4. Activate the 400 Hz high pass filter on the audio analyzer.
5. Change the frequency of the audio analyzer to 10 kHz. Because
the limiter circuitry was removed from most units made after
June 1995, the audio level will vary with the unit you have:
S All “V” And “W” frequency units: +3.1 dB (±0.5 dB)
S All units made through 6/95: +3.1 dB (±0.5 dB)
S All non-“V” and “W” units made after 6/95: +4.85 dB
(±0.5 dB)
Note: pc boards with the limiter components (see Figure 3)
should have the lower (+3.1 dB) audio output level.
6. Disengage the ratio function.
