Sony UWP-V1, Service Manual

Page: 45 / 164

2-25
UWP Series
Procedure
1. Set the spectrum analyzer as below:
CENTER 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
REFERENCE LEVEL : 20 dBm (10 dBm ;
KR model only)
FREQUENCY SPAN : 500kHz (50 kHz/DIV)
RBW (resolution band width) : 1 kHz
VBW (video band width)
: 1 kHz
ATT : 20 dB
2. Set the carrier frequency level (the center frequency
level of the spectrum analyzer) to the REFERENCE
LEVEL when no signals are input.
3. Input 1 kHz, _ 30 dBV ( _ 27.8 dBm) signal to the MIC
INPUT connector (with Mic input cable) from the audio
analyzer (oscillator).
4. At this time, confirm that the bandwidth at the level
_ 23 dB lower than REFERENCE LEVEL is in
specification.
Specification : bandwidth = 100 kHz or less
v:10 dB/div
H:50 kHz/div
_ 23 dB
fc
REFERENCE LEVEL
band width
100 kHz or less
carrier frequency
with no input signal