Specifications

SB-P-06-4066
sepura
Mobile & Gateway Accessory i/f
specification
30th July 2012
Page 15 of 39
Issue 7c
© Sepura plc 2011
Transceiv
er Pin No.
(15 way
HD
D-type)
Console Pin
No.
(16 way
header)
Signal Name
Signal Direction
Signal Function
Signal Characteristics
interface
2
Input to audio
subsystem
Microphone input.
Audio in: maximum
operating level ( FSD on
speech ADC) 0.65 V
pk
sine, AC coupled, into
600 Ω load impedance.
Line input to audio
subsystem
LINE AUDIO IN
See note 3 below
Audio in: maximum
operating level ( FSD on
speech ADC) 0.65 V
pk
sine, AC coupled, into
600 Ω load impedance.
8
Console
interface
1
3
MIC_LINE_G
ND
Input to audio
subsystem.
Ground return for
microphone input.
Main ground to audio star
point via 100 Ω resistor.
8
Console
interface
2.
3
MIC_LINE_G
ND
Input to audio
subsystem.
Ground return for
microphone input.
Main ground via 100 Ω
resistor. Input voltage
must be < 0.3 V (to ensure
input functions as
microphone input).
Reserved function
Reserved function
Do NOT tie to ground
9
9
RS232_DCD
4
Output from control
subsystem
RS232 levels
10
7
RS232_RXD
4
Output from control
subsystem
RS232 levels
11
12
RS232_TXD
4
Input to control
subsystem
RS232 levels
12
11
RS232_RTS
4
Input to control
subsystem
Hardware flow
control
RS232 levels
13
10
RS232_CTS
4
Output from control
subsystem
Hardware flow
control
RS232 levels
14
8
RS232_DTR
4
Input to control
subsystem
Data terminal ready
RS232 levels
15
13
GND
-
Power Ground and
return for digital
paths.
-
metal
shell
6
Screen
-
Over-all cable screen
Connect to digital GND
Notes:
Intentionally blank