F - 18 Tait Orca vehicle kit
June 2003 IPN: M5000-00-105
Table F-9: Vehicle kit power connector
(SK1 on the charger PCB)
Table F-10: Vehicle kit mobile microphone connector
(SKT1 on the options PCB)
Table F-11: Vehicle kit accessory/data connector
(SK3 on the charger PCB)
Pin
Signal
Description
1
N/C
–
2
GND
Main ground connection
3
IGN
Switched accessory power -
connect to permanent power to dis-
able ignition sense
4
+13V8
Main connection to +13.8 V (vehicle
battery). Use 3 A fuses.
Pin
Signal
Description
1
+13V8LIM
Power out
Zout = 10
Ω
; 100 mA maximum
2
N/C
–
3
EXT-PTT
External PTT and function buttons*
* EXT-PTT is pulled high inside the radio by 27 k
Ω
.
Function buttons are implemented by pull-downs to
ground. For BUTTON-1, R = 12 k
Ω
; for BUTTON-2, R
= 27 k
Ω.
4
MOB-MIC
Dynamic microphone input imped-
ance = 600
Ω
5
GND
Ground
6
N/C
–
Pin
Signal
Description
1
GND
Signal ground
2
RX-IN
RS-232 Receive data to radio
3
TX-OUT
RS-232 Transmit data from radio
4
N/C
–
5
BUSY
Radio receiving
low = busy (including beeps)
6
AUDIO-D25
Single ended audio.
Zout = 3 k
Ω
; AC coupled
7
GND
Signal ground
8
EXT-MIC-D25
Microphone input
Zin = 1 k
Ω
9
MOD-AUDIO
To modulator
10
EXT-PTT
PTT and function buttons
low = PTT
11
SPKR-OFF
Turns radio and external speaker
off
low = off
12
RX-DET-AF
Detected receive audio (unmuted)
13
GND
Signal ground
14
+5V
5 V power
25 mA maximum
15
+7V5-ACC
7.5 V from radio
25 mA maximum
16
SENSE-0-
ACC
Radio internal speaker control
low = off
17
SENSE-1-
ACC
–
18
SPKR+
Balanced output from audio PA
19
SPKR-
Balanced output from audio PA
20
N/C
–
21
N/C
–
22
N/C
–
23
N/C
–
24
LVSD
Low voltage shut down - turns off
vehicle kit
25
+13V8FILT
13.8V power
500 mA maximum
Summary of Contents for Orca 5000
Page 1: ...Tait Orca 5000 Portable Radios Service Manual June 2003 IPN M5000 00 105 ...
Page 4: ...iv June 2003 IPN M5000 00 105 ...
Page 22: ...B 2 June 2003 IPN M5000 00 105 ...
Page 36: ...B 16 Circuit descriptions June 2003 IPN M5000 00 105 ...
Page 38: ...B 18 Circuit diagrams June 2003 IPN M5000 00 105 ...
Page 40: ...B 20 Circuit diagrams June 2003 IPN M5000 00 105 ...
Page 42: ...C 2 June 2003 IPN M5000 00 105 ...
Page 78: ...E 2 June 2003 IPN M5000 00 105 ...
Page 94: ...F 2 June 2003 IPN M5000 00 105 ...
Page 118: ...G 2 June 2003 IPN M5000 00 105 ...