Sony UWP-V1, Руководство по обслуживанию

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2-34
UWP Series
(1) Output Level 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
OUTPUT LEVEL switch :
LINE (
_
20 dBm)
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
U30 model ; 578.125 MHz
±
1 kHz
U42 model ; 650.125 MHz
±
1 kHz
CE62 model ; 810.000 MHz
±
1 kHz
CE67 model ; 850.000 MHz
±
1 kHz
KR model ; 746.125 MHz
±
1 kHz
RF OUTPUT (Output level) : 60 dB
u
V
EMF
(=
_
53 dBm)
MODULATION (Modulation frequency) : 100 Hz
DEVIATION (Frequency deviation)
:
±
5 kHz
5. Check that the TUNER OUTPUT 1 connector output
level is
_ 20 dBm
±
1.0 dB (at 600 Z loaded).
6. Connect the audio analyzer to the MIX OUTPUT con-
nector via MIC amp.
7. Check that the MIX OUTPUT connector output level is
_
20 dBm
±
1.0 dB (at 600
Z
loaded).
8. Set the MIX OUTPUT LEVEL switch is
_
58 dBm (MIC).
9. Check that the TUNER OUTPUT 1 connector output
level is
_ 58 dBm
±
1.5 dB (at 600 Z loaded).
10. Check that the MIX OUTPUT connector output level is
_ 58 dBm
±
1.5 dB (at 600 Z loaded).
11. Connect the signal generator to the ANTENNA B IN
connector with DC cut fixture.
12. Perform the procedures 4 to 10 above.
n
The output level difference between the ANTENNA A
IN side and the ANTENNA B IN side should be within
0.5 dB.
(2) S/N 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
±
1 kHz
U42 model ; 650.125 MHz
±
1 kHz
CE62 model ; 810.000 MHz
±
1 kHz
CE67 model ; 850.000 MHz
±
1 kHz
KR model ; 746.125 MHz
±
1 kHz
RF OUTPUT (Output level) : 60 dB
u
V
EMF
(=
_
53 dBm)
MODULATION (Modulation frequency) : 1 kHz
DEVIATION (Frequency deviation)
:
±
5 kHz
5. Read the output level of the TUNER OUTPUT 1 con-
nector (Audio analyzer indication level).
This level is specified to be 0 dB.
6. Turn OFF the MODULATION (modulation frequency)
of the signal generator (No modulation).
7. Check that output level of the TUNER OUTPUT 1 is 62
dB or more (S/N is
_ 62 dB or less with A-weighted fil-
ter) as compared with the level of procedure 5 above.
8. Change the RF OUTPUT (output level) of the signal
generator as shown below.
RF OUTPUT (output level) : 15 dB
u V
EMF
(= _ 98 dBm)