Kenwood NX-3720HG Service Manual page 84

4.18 Receiver Section
Item Condition
Panel tuning
mode
1. [Panel test mode]
AF level 1) CH-Sig: 1-1
setting SSG output:
-47dBm (1mV)
(MOD: 1kHz/
±1.5kHz)
2. IQ 1) Adj item:
Phase [An IQ]
Adjust:[****]
2) Adj item:
[L1]→
[L3]→
[C2]→
[H1]→
[H3]
SSG output:
Freq: Tune
Freq +8kHz
level: -53dBm
(500μV)
(MOD:OFF)
3. RSSI 1) Adj item:
reference [An RSSI 1]
[DSP Adjust:[****]
(Receive)] 2) Adj item:
[L1]→
[L3]→
[C2]→
[H1]→
[H3]
SSG output:
12dB SINAD
level -3dB
(MOD:
1kHz/±1.5kHz)
[RF IC 1) Adj item:
(Receive)] [An RSSI 2]
Adjust:[****]
2) Adj item:
[L1]→
[L3]→
[C2]→
[H1]→
[H3]
SSG output:
12dB SINAD
level -3dB
(MOD:
1kHz/±1.5kHz)
1-84 (No.RA054<Rev.001>)
PC test mode Test-
equipment
1) Test Channel SSG
Channel: 1 DVM
Test Signaling AF VM
Type: Analog Dummy load
Signaling: 1
SSG output:
-47dBm (1mV)
(MOD:1kHz/
±1.5kHz)
1) Adj item: SSG
[IQ Phase]
2) Adj item:
[Low1]→
[Low3]→
[Center2]→
[High1]→
[High3]
SSG output:
Freq: Tune Freq
+8kHz
level: -53dBm
(500μV)
(MOD:OFF)
1) Adj item: SSG
[RSSI Reference Distortion
(Analog Narrow) meter
1 DSP (Receive)] Oscilloscope
2) Adj item:
[Low1]→
[Low3]→
[Center2]→
[High1]→
[High3]
SSG output:
12dB SINAD level
-3dB
(MOD:
1kHz/±1.5kHz)
1) Adj item: SSG
[RSSI Reference Distortion
(Analog Narrow) meter
2 RF IC (Receive)] Oscilloscope
2) Adj item:
[Low1]→
[Low3]→
[Center2]→
[High1]→
[High3]
SSG output:
12dB SINAD level
-3dB
(MOD:
1kHz/±1.5kHz)
Measurement
Unit Terminal Unit
Panel ANT Panel [Panel
Ext. SP
connector
Panel ANT Panel [Panel
Ext. SP
connector
Panel ANT Panel
Ext. SP
connector
Panel ANT Panel
Ext. SP
connector
Adjustment
Parts Method
Volume Up/Down
tuning knob to obtain 1.41V
mode] AF output.
[], (0.5W @ 4ohm load)
[]
[PC
test
mode]
[+], [-]
[PC test mode]
tuning [Automatic
mode] Adjustment]
[], After input signal from
[] SSG,
[PC 1) Press [Autotune]
test button.
mode] 2) Press [Apply]
[+], [-] button to store the
adjustment value after
the automatic
adjustment has
finished.
[Manual Adjustment]
Adjust RSSI
Level(DSP Normal
Power Mode)
Value to the minimum.
[Panel tuning mode]
After input signal from
SSG, press [ ]
button to store the
adjustment value.
[PC test mode]
After input signal from
SSG,
1) Press [Acquire
Monitored Value]
button.
2) Press [Apply]
button to store the
adjustment value.
[Panel tuning mode]
After input signal from
SSG, press [ ]
button to store the
adjustment value.
[PC test mode]
After input signal from
SSG,
1) Press [Acquire
Monitored Value]
button.
2) Press [Apply]
button to store the
adjustment value.
Specifica
tions
/Remarks
1.41V
±0.1V