Kenwood NXR-700 Service Manual page 57

Item Condition
31. BPF 1) Tracking generator
Output: –20dBm
Spectrum analyzer
Frequency: Desired frequency
Span: 50MHz
32. MCF 1) Wide
Tracking generator
Output: –20dBm
Spectrum analyzer
Frequency: 49.95MHz
Span: 100kHz
2) Narrow
Spectrum analyzer
Span: 50kHz
33. Discriminator 1) Narrow
Frequency: Desired frequency
SSG output: –53dBm (501µV)
SSG MOD: 1kHz
SSG DEV: 1.5kHz
AF output: 2V/4Ω
34. RD Level 1) Wide/Narrow: Analog Wide
Connect the SSG to the RX
ANT.
SSG setting
Frequency: Desired frequency
Output: –53dBm (501µV)
MOD: 1kHz
DEV: ±3.0kHz
2) Wide/Narrow: Analog Narrow
SSG setting
DEV: ±1.5kHz
35. RA Level 1) Wide/Narrow: Analog Wide
Connect the SSG to the RX
ANT.
SSG setting
Frequency: Desired frequency
Output: –53dBm (501µV)
MOD: 1kHz
DEV: ±3.0kHz
2) Wide/Narrow: Analog Narrow
SSG setting
DEV: ±1.5kHz
36. Receiver 1) Wide/Narrow: Analog Wide
Sensitivity Connect the SSG to the RX
Check ANT.
SSG setting
Frequency: Desired frequency
MOD: 1kHz
DEV: ±3.0kHz
AF: 0.45V/4Ω
2) Wide/Narrow: Analog Narrow
SSG setting
DEV: ±1.5kHz
ADJUSTMENT
Measurement
Test-
Unit Terminal Unit
equipment
Tracking Rear RX ANT RX
generator
Spectrum RX CN41
analyzer
Tracking Rear CN46 RX
generator
Spectrum RX CN47
analyzer
SSG Rear RX ANT RX
AF V.M TEST/
SPKR
jack SPO
(pin 12)
4Ω load
SSG Rear RX ANT
AF V.M CONTROL
I/O jack
RD (pin 10)
SSG Rear RX ANT
AF V.M CONTROL
I/O jack
RA (pin 11)
SSG Rear RX ANT
Distortion TEST/
meter SPKR
jack SPO
(pin 12)
4Ω load
NXR-700
Adjustment
Parts Method
TC1~ Adjust it by the pro- Refer to Fig. 1. (Page 50)
TC8 grammed frequency
to look like the wave
in fi gure 1.
L46 Adjust it to look like Refer to Fig. 2. (Page 50)
L52 the wave in fi gure 2.
L74
L90
L47 Adjust it to look like Refer to Fig. 3. (Page 50)
L53 the wave in fi gure 3.
L75
L91
L128 Adjust AF output
max.
PC 80mV ±5mV
ADJ
PC 400mV ±20mV
ADJ
Check –115dBm (0.4µV) or less
Specifi cations / Remarks
57