Sony UWP-V1 Service Manual page 70

Notes
Because the audio system of the URX-P2 is output in the
unbalanced system, the noise level can be possibly so high
that the S/N measurement becomes impossible depending
on the measurement system. In such a case, reassemble the
URX-P2 completely and emit the RF output of the signal
generator from the antenna (Part No.1-501-612-13) and
receive the RF signal with the URX-P2 in order to imple-
ment the S/N ratio measurement.
Equipment and Tools
. Signal generator
. Audio analyzer
. Mic amp (Noise meter) with A-weighted filter
. Oscilloscope
. Antenna : (Part No.1-754-575-11 or 1-501-612-13)
Connection
MIC
amplifier
Antenna "a"
OUTPUT
Antenna
(1-501-612-13)
Signal
generator
URX-P2
2-50
Procedure
1. Reassembly URX-P2 completely.
2. Turn on the power of the URX-P2 following the
3. Set the signal generator output level to 80 dBu. (Set
4. Move the antenna connected to the signal generator, in
Audio
analyzer
Oscilloscope
Antenna "b"
5. Confirm that the decimal digit indicator that is located
6. Set "modulation" of the signal generator to OFF.
7. Set "modulation" of the signal generator to ON.
8. Set the audio analyzer to the distortion measurement
9. Confirm that distortion is less than -40 dB (1% or less).
10. Move the antenna connected to the signal generator, in
11. Confirm that the decimal digit indicator that is located
12. Perform the procedures 6 to 9 above.
procedure. (For setting, refer to "Setting the Squelch
OFF mode" on page 2-42. For the power supply, use
the battery.)
the measurement frequency and other parameters to
the same setup as the ordinary measurement.)
the periphery of the antenna a of the URX-P2 as
shown in the illustration.
Signal
generator
in between the first digit and the second digit from the
left-most end of the LCD indicator lights on.
n
If the decimal digit indicator does not light on, confirm
tat is lights when the antenna connected to the signal
generator is moved to front, end, right or left slightly.
Confirm that the S/N ratio in this setup is 62 dB or
more (A-weighted).
mode.
the periphery of the antenna b of the URX-P2 as
shown in the illustration.
in between the first digit and the second digit from the
right-most end of the LCD indicator lights on.
Antenna
m m
0 0
x . 1
p r o
A p
URX-P2
UWP Series