Level Diagram - Kenwood NX-320 Series Service Manual

NX-320
Receiver Section
–118.5dBm
–119.5dBm
C261
186.2mVrms
ASIC
C605
IC610
To make measurements in the AF section, connect the AC level meter. (ANT input: –53dB, 1kHz FM, 3kHz DEV (Wide))
In the RF section, use a 1000pF coupling capacitor.
(The display shows the SSG input value required to obtain 12dB SINAD without local level.)
Transmitter Section
12.5mVrms
(at MIC terminal)
C71
IC2
VCO
C473
AG is set to the MIC input becomes (3kHz/1.5kHz) at 1kHz MOD (Wide/Narrow).
To make measurements in the AF section, connect the AC level meter.
In the RF section, use a 1000pF coupling capacitor.
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LEVEL DIAGRAM

RF (Center Frequency)
LNA
C246 C216
Q202
AF (1kHz)
186.2mVrms 226.2mVrms
SUM SMF
C30
IC904 IC2
42.6mVrms 23.5mVrms
C35
–2.1dBm
C477 C482 D413
Q408
C475 D412
PLL RXLO
IF1 (49.95MHz)
–107.0dBm –120.5dBm
MCF
Mixer
C353
Q201
XF1
68.0mVrms 43.9mVrms
DAC
Audio Amp
C903
IC901
IC4
AF (1kHz)
F1: 162.4mVrms(W) F1: 162.4mVrms(W)
81.2mVrms(N)
81.2mVrms(N)
F2: 166.3mVrms(W) F2: 166.3mVrms(W)
83.2mVrms(N) 83.2mVrms(N)
IC603
DSP
ASIC
C443
IC610
IC6
RF (Center Frequency)
13.2dBm
C114
Q102 Q103
–107.0dBm –71.0dBm
IF Amp
FM IC
C338 C335
IC302
Q303
400mW
F1: 30.9mVrms(W)
15.5mVrms(N)
F2: 37.0mVrms(W)
18.5mVrms(N)
VCO
13.0dBm 33.5dBm
C120 C149
Q104
F1: K,K2,K3
F2: K4,K5,K6,E,E2,E3
IF2 (450kHz)
CF ASIC
CF2 IC610
5.0W