Sony UWP-V1, Руководство по обслуживанию

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2-29
UWP Series
1 6 2 3 4 5
ANTENNA A IN
ANTENNA B IN
URX-M2
TUNER
OUTPUT 1
RV402 RV401
Oscilloscope
600 Z
balance
input
Signal
generator
DC cut fixture
MB-X6/MB-806
Tuner slot
DC cut fixture
Audio
analyzer
MIC amp
3. Output Level Adjustment
Perform this adjustment when the TUNER OUTPUT levels
deviate from the specification.
Preparation
1. Turn off the POWER switch of the MB-X6/MB-806.
2. Remove the case cover of the MB-X6/MB-806.
3. Remove the upper side case lid of the URX-M2, and
insert the URX-M2 to the Tuner
[1]
slot of the MB-
X6/MB-806.
Equipment and Tools
. Tuner base unit MB-X6/MB-806
. Audio analyzer (level meter, distortion meter)
.
Mic amp (Noise meter)
.
Oscilloscope
. Adjuster (0.4 x 1.3 mm) : (Part No. 7-721-052-81)
. DC cut fixture (See the “How to make DC cut fixture”
on page 2-28)
Connection/Adjustment Location
Switch and Control Setting
. URX-M2 Front panel
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)
Procedure
Preparation
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) : 100 Hz
DEVIATION (Frequency deviation) :
±
5 kHz
Adjustment
n
The adjustment procedures describe that the URX-M2
(to be adjusted) is installed into the Tuner
[1]
slot on the
MB-X6/MB-806.
1.
Connect the audio analyzer to the TUNER OUTPUT 1
connector via MIC amp.
2. Connect the signal generator to the ANTENNA A IN
connector with DC cut fixture.
3. Adjustment (ANTENNA A IN side adjustment)
Point : TUNER OUTPUT 1
Specification : Output level (level meter indication
level) =
_
20 dBm
±
0.5 dB (at 600
Z
loaded)
Adjustment : 1 RV401/MB-1129 board (URX-M2)
4. Connect the signal generator to the ANTENNA B IN
connector with DC cut fixture.