A
1
2
3
4
5
B
C
D
E
F
G
(No.RA054<Rev.001>) 2-12
2-12 (No.RA054<Rev.001>)
Receiver Section
RF (Center Frequency)
AF (1kHz)
C311
ANT
D205
IC607
D206
C262
D207 C337
C306
IC302
IC404
C655 IC412 C661 IC608 C627 IC601
C145
To make measurements in the AF section, connect the AC level meter.
(ANT input: –53dBm, 1kHz FM, 3kHz DEV (Wide). SP output: 4W@4ohm Load)
In the RF section, use 470pF coupling capacitor.
(The display shows the SSG input value required to obtain 12dB SINAD.)
Transmitter Section
AF (1kHz)
AF (1kHz)
RF (Center Frequency)
(Mod)
(Local)
IC607
IC404
C327
C145
MIC
D205
ANT
D206
IC303
C216
IC202
C225
Q201
C238
IC201
C250 D207 C262
* Transmit frequency : 435MHz (K2,E), 485MHz (K)
LPF
ANT
SW
HPF
Transceiver IC
VCO
MPU/DSP
CODEC
-120dBm
-121.5dBm
㪄㪈㪉㪉㪅㪌㪻㪙㫄
141mVrms
CODEC
MPU/
DSP
Pre-
Drive
Drive
Final
LPF
ANT
SW
5.8mVrms
2dBm
14.2dBm
K,K2:18.2dBm
E:14.5dBm
K,K2:47.7dBm
E:45.2dBm
K,K2:47.5dBm
E:45dBm
K,K2:45W
E:25W
㪟㪧㪝
-107.5dBm
-5dBm~+5dBm
-121dBm
Transceiver IC
㪭㪚㪦
149.4mVrms
-5~5dBm
72.1mVrms
77.4mVrms
VOL
NX-3820/3820H
Summary of Contents for NX-3720
Page 188: ...MEMO No RA054 Rev 001 2 20 ...