Kenwood NX-900 Service Manual page 61

Receiver Section
Item
Panel tuning mode
1. AF level [Panel test mode]
setting 1) CH-Sig: 1-1
SSG output:
–47dBm (1mV)
(MOD: 1kHz/±1.5kHz)
2. RSSI 1) Adj item: [An RRSSI]
Reference Adjust: [✳✳✳]
*5 2) Adj item:
[AnL RRSSI]→
[Analog [AnC RRSSI]→
Narrow] [AnH RRSSI]
SSG output: 12dB
SINAD level –3dB
(MOD: 1kHz/±1.5kHz)
[Analog 1) Adj item: [As RRSSI]
Wide 4k] Adjust: [✳✳✳]
2) Adj item:
[AsL RRSSI]→
[AsC RRSSI]→
[AsH RRSSI]
SSG output: 12dB
SINAD level –3dB
(MOD: 1kHz/±2.4kHz)
[Analog 1) Adj item: [Aw RRSSI]
Wide 5k] Adjust: [✳✳✳]
2) Adj item:
[AwL RRSSI]→
[AwC RRSSI]→
[AwH RRSSI]
SSG output: 12dB
SINAD level –3dB
(MOD: 1kHz/±3kHz)
[NXDN 1) Adj item: [Nv RRSSI]
Very Adjust: [✳✳✳]
Narrow] 2) Adj item:
[NvL RRSSI]→
[NvC RRSSI]→
[NvH RRSSI]
SSG output: 12dB
SINAD level –3dB
(MOD: 1kHz/±1.5kHz)
*5: Because "RSSI reference adjust" of NXDN Narrow is adjusted by adjusting "RSSI reference adjust [Analog Narrow]", it is not necessary to
adjust "RSSI reference adjust" of NXDN Narrow.
ADJUSTMENT
Condition
PC test mode
equipment
1) Test Channel SSG
Channel: 1 DVM
Test Signaling AF VTVM
Mode: Analog Dummy
Signaling: 1 load (4Ω)
SSG output:
–47dBm (1mV)
(MOD: 1kHz/±1.5kHz)
1) Adj item: [RSSI SSG
Reference (Narrow)] AF VTVM
2) Adj item: [Low], Oscilloscope
[Center], [High]
SSG output: 12dB
SINAD level –3dB
(MOD: 1kHz/±1.5kHz)
1) Adj item: [RSSI Ref-
erence (Wide 4k)]
2) Adj item: [Low],
[Center], [High]
SSG output: 12dB
SINAD level –3dB
(MOD: 1kHz/±2.4kHz)
1) Adj item: [RSSI Ref-
erence (Wide 5k)]
2) Adj item: [Low],
[Center], [High]
SSG output: 12dB
SINAD level –3dB
(MOD: 1kHz/±3kHz)
1) Adj item: [RSSI Ref-
erence (Very Narrow)]
2) Adj item: [Low],
[Center], [High]
SSG output: 12dB
SINAD level –3dB
(MOD: 1kHz/±1.5kHz)
Measurement
Test-
Unit Terminal Unit
ANT
Ext.SP
connector
NX-900
Adjustment
Specifi cations /
Parts Method
[Panel Volume Up/Down 2.83V±0.3V
tuning knob to obtain
mode] 2.83V AF output.
[ ],[ ] (2.0W @ 4Ω load)
[PC test
mode]
[ ],[ ]
[Panel tuning mode]
After input signal
from SSG, press
[ ] key to store the
adjustment value.
[PC test mode]
After input signal
from SSG, press
[Apply] button to
store the adjust-
ment value.
Adjust with the ana-
log signal.
Remarks
61