Table of Contents
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NGT—Index
CIB connector
,
pinouts 42
50
clarifier 39
connectors
desk console
headphone 53
junction box
CIB 50
GPIO 52
handset 49
serial data 51
speaker 50
RF unit
10-way 45
4/6-way 46
antenna control 43
CIB 42
DC supply 43
fan 44
GPIO 48
handset and speaker 47
RF 43
control and switching
2010 61
2011/2012 68
cooling 37
,
crystal oven 93
152
D
data bus
,
handset 97
125
DC supply connector
pinouts 43
,
DDS 94
121
,
demodulator 91
119
desensitisation 38
desk console 100
headphone connector 53
,
display 96
124
testing 159
distortion
A/F 39
drawings 201
driver bias
adjusting 176
,
driver stage 82
113
duty cycle 39
E
emission
harmonic 40
spurious 40
NGT Index-2
exciter output
adjusting
level 170
spurious balance 172
,
filter 80
112
F
fan connector
pinouts 44
filter
45 MHz (band-pass) 80
,
,
,
455 kHz 79
89
111
117
,
broadcast 87
116
,
exciter output 80
112
,
input (low-pass) 87
116
low-pass 152
,
output 83
114
Rx 167
second IF 102
Tx 168
Filter and Control PCB 100
,
supply voltages 74
108
first mixer
,
receive path 87
116
,
transmit path 79
111
frequency
adjusting 173
generation 36
IF 38
range 36
,
reference oscillator 94
stability 36
frequency control
2010 93
2011/2012 121
G
,
gain control stage 81
113
general specifications 36
GPIO connector
,
pinouts 48
52
H
handset
,
control 96
124
,
data bus 97
125
microphone amplifier transmit path 75
,
microprocessor 96
124
size 37
weight 37
handset and speaker connector
pinouts 47
handset connector
pinouts 49
NGT Transceiver System Technical Service Manual
,
,
,
87
111
116
,
127
,
151
121
,
109
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