Tuner Output 1 - Sony UWP-V1 Service Manual

6. Change the MODULATION (modulation frequency) of
the signal generator as follows, and check the output
level of the OUTPUT connector is set also as follows.
n
40 Hz and 18 kHz modulation frequency must be set by
using the function generator.
MODULATION frequency
of signal generator
40 Hz
18 kHz
7. Connect the signal generator to the ANTENNA B IN
connector with DC cut fixture.
8. Perform the procedures 4 to 6.
2-36

TUNER OUTPUT 1

connector output level
+2.0 ± 1.0 dB
_34.0 ± 2.5 dB
(4) Distortion Ratio Check
Procedure
n
The checking procedures describe that the URX-M2 (to be
adjusted) is installed into the Tuner [1] slot on the MB-X6 or
MB-806.
1. Set the URX-M2 and MB-X6/MB-806 as follows :
. URX-M2 Front panel (Tuner [1])
Channel setting :
U30 model ; Group 03, 32-01 channel (578.125 MHz)
U42 model ; Group 03, 44-01 channel (650.125 MHz)
CE62 model ; Group 04, 63-32 channel (810.000 MHz)
CE67 model ; Group 04, 68-32 channel (850.000 MHz)
KR model ; Group 12, 60-01 channel (746.125 MHz)
RF Squelch : OFF (For setting, refer to "Setting the
Squelch OFF mode" on page 2-29)
. MB-X6/MB-806 Rear panel
ATT (ANTENNA A, B) switch :0 dB
2. Connect the audio analyzer to the TUNER OUTPUT 1
connector via MIC amp.
3. Connect the signal generator to the ANTENNA A IN
connector with DC cut fixture.
4. Set the signal generator as follows :
Signal generator setting
FREQUENCY (carrier frequency) :
U30 model ; 578.125 MHz
U42 model ; 650.125 MHz
CE62 model ; 810.000 MHz
CE67 model ; 850.000 MHz
KR model ; 746.125 MHz
RF OUTPUT (Output level) : 60 dBuV
MODULATION (Modulation frequency) : 1 kHz
DEVIATION (Frequency deviation)
5. Set the audio analyzer to the distortion mode, and check
that the distortion ratio is less than 0.8 %.
6. Change the MODULATION (modulation frequency) of
the signal generator as shown below.
MODULATION (modulation frequency) : 10 kHz
Check that the distortion ratio is less than 4 %.
n
10 kHz modulation frequency must be set by using the
function generator.
7. Connect the signal generator to the ANTENNA B IN
connector with DC cut fixture.
8. Perform the procedures 4 to 6 above.
(= _53 dBm)
EMF
: ± 36 kHz
UWP Series