Level Diagram - Kenwood NX-3220 K Service Manual

LEVEL DIAGRAM

NX-3220
Receiver Section
5
RF (Center Frequency)
-121.5dBm -122.5dBm -123.0dBm
D201
ANT D205
D202
C246 D203 C344
4
ANT
LPF
SW
To make measurements in the AF section, connect the AC level meter.
(ANT input: –53dBm, 1kHz FM, 3kHz DEV (Wide). SP output: 500mW@8ohm Load)
3
In the RF section, use 470pF coupling capacitor.
(The display shows the SSG input value required to obtain 12dB SINAD.)
Transmitter Section
AF (1kHz)
2
12.5mVrms
IC601
INTM_M
Internal MIC
CODEC
1
EMC
External MIC
A B
-107.5dBm
-123.5dBm
C311
HPF
C334 IC303
HPF Transceiver IC
C195
VCO
AF (1kHz)
78.9mVrms
-5~5dBm
(Mod)
IC401 C345
VCO
IC303
MPU/
DSP
Transceiver IC
C
(No.RA053<Rev.001>) 2-11
AF (1kHz)
5.65Vp-p
IC601
IC401
MPU/DSP
CODEC
-5dBm ~ +5dBm
C683
RF (Center Frequency)
3dBm 14dBm
(Local)
C195
C218 IC202 C225
Pre-
Drive
D E
2-11 (No.RA053<Rev.001>)
CN604
CN605
Internal Speaker
IC650
External Speaker
25dBm 38dBm 38dBm
D201
D205
D202
C227 D203 C246
Q201 C237 Q202
ANT
Drive Final
SW
* Transmit frequency : 155MHz
F
5W
ANT
LPF
G