Sony UWP-V1, Руководство по обслуживанию

Страница: 55 / 164

2-35
UWP Series
(3) Frequency Characteristic 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 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
(indication of the audio analyzer).
This level is specified to be 0 dB.
9. Check that output level of the TUNER OUTPUT 1 is 36
dB or more (S/N is
_ 36 dB or less with A-weighted fil-
ter) as compared with the level of procedure 5 above.
10. Change the RF OUTPUT (output level) of the signal
generator as shown below.
RF OUTPUT (output level) : 60 dB
u V
EMF
(= _ 53 dBm)
11. Set the audio analyzer to the distortion mode.
12. Check that distortion ratio is
_
40 dB or less (1 % or
less) with A-weighted.
13. Connect the signal generator to the ANTENNA B IN
connector with DC cut fixture.
14. Perform the procedures 4 to 12 above.
15. Set the channel and FREQUENCY (carrier frequency)
of the signal generator as shown
1
and
2
below.
Perform the procedures 3 to 14 above, for each channel
setting (
1
and
2
).
1
Channel setting :
U30 model ; Group 01, 30-01 channel (566.125 MHz)
U42 model ; Group 01, 42-01 channel (638.125 MHz)
CE62 model ; Group 01, 62-01 channel (798.125 MHz)
CE67 model ; Group 01, 67-01 channel (838.125 MHz)
KR model
; Group 00, 59-01 channel (740.125 MHz)
Signal generator setting :
FREQUENCY (carrier frequency)
U30 model
; 566.125 MHz
U42 model ; 638.125 MHz
CE62 model ; 798.125 MHz
CE67 model ; 838.125 MHz
KR model
; 740.125 MHz
2
Channel setting :
U30 model ; Group 00, 33-47 channel (589.875 MHz)
U42 model ; Group 00, 45-47 channel (661.875 MHz)
CE62 model ; Group 00, 64-63 channel (821.875 MHz)
CE67 model ; Group 00, 69-64 channel (862.000 MHz)
KR model
; Group 00, 60-47 channel (751.875 MHz)
Signal generator setting:
FREQUENCY (carrier frequency):
U30 model
; 589.875 MHz
U42 model ; 661.875 MHz
CE62 model ; 821.875 MHz
CE67 model ; 862.000 MHz
KR model
; 751.875 MHz