6881086C22-B
69
TRN7391C Audio Interface Board Schematic Diagram (Sheet 2 of 2)
LOCAL DESK MICROPHONE NOT PRESENT
EMER ACTIVE LOW
TX+
VU_AUD
DIG_GND
47 RESISTORS IN PARALLEL
TO DISSAPATE MAXIMUM 10W
1 Vrms BETWEEN RX+ AND RX-
*ASTRO CONTROL HEAD POWER BUTTON DISABLED
OFF (OPEN)
2. SWITCHES S101-2 AND S101-8 ARE UNUSED
VI3
9.6V REGULATOR
ANA_GND
CHASSIS_GND
RE
VSENSE1
VSENSE2
VSENSE2_SHLD
DIG_GND
V01
*600 OHM IMPEDANCE
*EMER ACTIVE HIGH
REMOTE_RX-
2. AN ASTERISK (*) FOLLOWING A SIGNAL NAME INDICATES AN
S101 - 3
S101 - 4
S101 - 5
S101 - 6
S101 - 7
ASTRO CONTROL HEAD POWER BUTTON ENABLED
*LOCAL DESK MICROPHONE PRESENT
*DIGITAL REMOTE CONTROL OPTION NOT PRESENT
3. ALL VOLTAGE MEASUREMENTS TAKEN USING 1 KHZ AT 60% FSD
.
AUD_SHLD
RS232_RXD
5V REGULATOR
1. AN ASTERISK (*) INDICATES DEFAULT FACTORY SETTING
ELC RECEIVE AUDIO
BUS-
TX-
BUS+
CTRL_HD_MIC
PROVIDES 16 OHM OUTPUT
RS232_TXD
RS232_RTS
RS232_CTS
ON (CLOSED)
BUSY
SWITCH NOTES:
DIGITAL REMOTE CONTROL OPTION PRESENT
VI1
VSENSE1_SHLD
EMER
RESET
ANA_GND
TX_AUD
V03
BUS-
BUS+
V02
RESET
BUSY
ACTIVE LOW SIGNAL.
SPKR_UNMUTE ACTIVE HIGH (COR)
TAPE_OUT (ACCESSORY CONNECTOR 3, PIN 11)
A-B
*B-C
*SPKR_UNMUTE ACTIVE LOW (COR)
FILT_AUD
*600 OHM IMPEDANCE
900 OHM IMPEDANCE
BUS_SHLD
SCHEMATIC NOTES:
1. UNLESS OTHERWISE SPECIFIED, ALL RESISTOR VALUES
ARE IN OHMS AND ALL CAPACITOR VALUES ARE IN MICROFARADS
.
SWITCH
S101 - 1
PWR_LED_K
UNUSED CONNECTOR PINS
900 OHM IMPEDANCE
AUDIO REFERENCES
49
JUMPER
STATE
DESCRIPTION
*I N
JU101
A-B
TRANSMITTED AND RECEIVED AUDIO IS ROUTED TO
TAPE_OUT (ACCESSORY CONNECTOR 3, PIN 11)
*B-C
ONLY RECEIVED AUDIO IS ROUTED TO
JUMPER NOTES:
1. AN ASTERISK (*) INDICATES DEFAULT FACTORY SETTING
J14
J15
ALWAYS PLACED FOR ASTRO
J3
C106
.01uF
U103
PWR_GND
7
GND
14
VCC
TP132
6.8K
R239
J6 4
.01uF
C109
TP100
470pF
C148
VR105
5.6V
J3 24
29
J3 27
J3
TP126
J6 2
TP107
TP139
39
TP138
J1 32
J1
C105
.01uF
VR109
6.8V
6.8V
VR108
VR110
6.8V
TP99
TP97
J3 44
TP65
TP66
TP64
J2 32
J2 33
VR116
15V
31
J2 29
TP30
J2
C102
4.7uF
TP48
TP76
TP123
750
750
R159
R164
R162
750
TP7
750
R161
J3 41
TP141
TP142
TP140
5V
SWB+
SWB+
10
R148
J3 48
TP50
TP53
R154
1K
2
R233
10K
100K
J2
1K
R231
27
J2 34
R230
J2
750
R156
C114
10uF
U104
MC78M05
GN
D
2
IN
1
OUT
3
J3 46
TP47
TP45
1
J2 24
TP46
J6 3
J6
TP124
TP8
R163
750
750
R160
750
R201
R194
750
38
U105
MC33074A
13
12
14
4
11
J3
100uF
C141
J1 5
2
3
0.1uF
C123
CR102
1
TP2
TP55
5V
R133
10K
R196
750
J2
3
R232
4.7K
J2
6
R229
120
R228
1.2K
TP136
J2 23
R136
1K
R193
750
750
R192
J2 25
1
2
100K
R225
CR103
3
R204
750
R190
R199
750
750
R227
10K
2
TP137
J1
11
MC33074A
U105
6
5
7
4
11
U105
MC33074A
9
10
8
4
100uF
J13
1
J3 9
C142
J5 3
R197
J5 2
R179
750
750
750
R185
R189
750
C122
0.1uF
TP72
TP73
TP71
TP69
TP70
750
R173
IN
1
OUT
2
SENSE
4
SHDN
J2
7
LT1129CQ
U100
3
GND1
6
GND2
750
R178
R177
750
R147
820
TP62
R184
TP54
R198
750
750
15K
R107
18K
R105
J13
2
TP12
10
TP22
R146
750
R200
R166
750
J1 3
750
R183
R182
750
750
R181
R180
750
J3 34
TP24
R150
10
35
J3 16
39
J5 1
J3
17
J3 20
J3
J3 25
J3
750
R165
R169
750
750
R174
TP74
TP75
TP68
470pF
C150
SWB+
15V
VR113
26
15V
VR115
J3
VR100
15V
8
J3 21
12
J1 14
J3
9
J1 42
J1
J1
10
R153
750
R167
R195
750
750
R170
R176
750
J2 30
TP52
J3 5
R224
120
36
0.1uF
C137
J3
18
10K
R226
J3
J3 47
5V
470pF
VR114
15V
C151
470pF
C152
U107
MC3303
9
10
8
4
11
25
J1 16
J1
J13
3
A+
R168
750
R205
750
J3 3
J3 28
C155
470pF
SWB+
J3 22
J3 6
A+
2
J3 19
750
J3
J3 14
R172
1
R175
750
750
R203
J4
2
100uF
C125
J11
470pF
C156
7
J3 11
J3
R240
51
J3 12
J3 37
2.2V
470pF
J3 31
C153
J3 23
TP67
J3 40
J3 1
13
12
14
4
11
5V
J3 10
MC3303
U107
J3 15
SWB+
5V
J3 13
J3 4
J4 2
R191
750
9.6V
9.6V
750
R171
Q108
6.8V
VR103
R202
750
U107
MC3303
6
5
7
4
11
5V
C119
4.7uF
R151
10
TP63
4.8V
TP144
TP33
TP120
TP116
TP114
TP111
42
J3 45
33
J3 32
J3
J3 30
J3
TP148
TP147
TP149
R152
10
J1
6
J1 7
220pF
C115
SWB+
9.6V
J3 50
9.6V
43K
R103
A+
68K
R100
XFMR
T100
1
3
6
4
5
CR105
Q107
VR102
6.8V
TP42
R223
1.2K
TP131
R222
1K
TP127
TP128
TP49
0.1uF
C159
C160
0.1uF
TP125
33K
R104
J3 43
TP117
A+
TP109
TP112
TP152
TP98
15V
VR112
J1
8
TP41
TP129
750
R158
R157
750
TAPE_OUT
SPKR_UNMUTE
SPKR_HI
UNAVAILABLE
MONITOR*
PTT*
A+
A+
A+
SWB+
5V
RX-
RX+
PWR_LED_A
PWR_LED_A
SPKR_LO
AUX_TX_AUD
AUX_RX_AUD
FILT_AUD
5
6
7
8
10
9
11
12
16
15
14
13
17
18
19
20
21
25
24
23
22
26
27
28
29
30
4
3
2
1
MAEPF-27902-O
+
+
+
+
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_
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Содержание ASTRO Digital Spectra
Страница 1: ...ASTRO Spectra Spectra Plus Consolette Instruction Manual ...
Страница 10: ...viii 6881086C22 B Notes ...
Страница 14: ...xii 6881086C22 B Consolette Installation Guidelines Notes ...
Страница 22: ...xx 6881086C22 B ASTRO Spectra Consolette Options Notes ...
Страница 26: ...Introduction Options 4 6881086C22 B Notes ...
Страница 40: ...Installation Remote Control Installation 18 6881086C22 B Notes ...
Страница 72: ...Cable Diagrams Optional Cables 50 6881086C22 B Notes ...
Страница 74: ...Diagrams and Parts Lists List of Schematics Boards and Parts Lists 52 6881086C22 B Notes ...
Страница 84: ...62 6881086C22 B Notes ...
Страница 85: ...6881086C22 B 63 Schematics Boards and Parts Lists ASTRO Spectra Consolette Exploded View MAEPF 27904 A ...
Страница 106: ...84 6881086C22 B Notes ...
Страница 110: ...88 6881086C22 B Appendix A Cross Patch Configuration Notes ...