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NXR-700
90
ADJUSTMENT
Item
Condition
Measurement
Adjustment
Specifi cations / Remarks
Test-
equipment
Unit
Terminal
Unit
Parts
Method
30. Transmit
Audio Input
(TA)
2) Channel: 3 (Center)
Wide/Narrow: Analog Wide 4k
Deviation
meter
AG
DVM
Rear
TX ANT
CONTROL
I/O jack TA
(pin 9)
PC
ADJ
±2.4kHz
±0.03kHz
3) Channel: 3 (Center)
Wide/Narrow: Analog Narrow
±1.50kHz
±0.02kHz
31. BPF
1) Tracking generator
Output: –20dBm
Spectrum analyzer
Frequency: Desired frequency
Span: 50MHz
Tracking
generator
Spectrum
analyzer
Rear
RX
RX ANT
CN41
RX
TC1~
TC8
Adjust it by the pro-
grammed frequency
to look like the wave
in fi gure 1.
Refer to Fig. 1. (Page 82)
32. MCF
1) Wide
Tracking generator
Output: –20dBm
Spectrum analyzer
Frequency: 49.95MHz
Span: 100kHz
Tracking
generator
Spectrum
analyzer
Rear
RX
CN46
CN47
RX
L46
L52
L74
L90
Adjust it to look like
the wave in fi gure 2.
Refer to Fig. 2. (Page 82)
2) Narrow
Spectrum analyzer
Span: 50kHz
L47
L53
L75
L91
Adjust it to look like
the wave in fi gure 3.
Refer to Fig. 3. (Page 82)
33. Discriminator 1) Narrow
Frequency: Desired frequency
SSG output: –53dBm (501µV)
SSG MOD: 1kHz
SSG DEV: 1.5kHz
AF output: 2V/4
SSG
AF V.M
Rear
RX ANT
TEST/
SPKR jack
SPO (pin
12) 4
load
RX
L128
Adjust AF output
max.
34. RD Level
1) Wide/Narrow: Analog Wide 5k
Connect the SSG to the RX
ANT.
SSG setting
Frequency: Desired frequency
Output: –53dBm (501µV)
MOD: 1kHz
DEV: ±3.0kHz
SSG
AF V.M
Rear
RX ANT
CONTROL
I/O jack RD
(pin 10)
PC
ADJ
80mV
±5mV
2) Wide/Narrow: Analog Wide 4k
SSG setting
DEV: ±2.4kHz
3) Wide/Narrow: Analog Narrow
SSG setting
DEV: ±1.5kHz
35. RA Level
1) Wide/Narrow: Analog Wide 5k
Connect the SSG to the RX
ANT.
SSG setting
Frequency: Desired frequency
Output: –53dBm (501µV)
MOD: 1kHz
DEV: ±3.0kHz
SSG
AF V.M
Rear
RX ANT
CONTROL
I/O jack RA
(pin 11)
PC
ADJ
400mV
±20mV
Содержание NEXEDGE NXR-700
Страница 110: ...NXR 700 110 MEMO ...
Страница 119: ...NXR 700 117 MEMO ...
Страница 137: ...NXR 700 135 MEMO ...
Страница 138: ...NXR 700 136 MEMO ...
Страница 140: ...NXR 700 ...
Страница 171: ...1 E CN300 RX_IF_VN ...