Specifications
SB-P-06-4066
sepura
Mobile & Gateway Accessory i/f
specification
30th July 2012
Page 16 of 39
Issue 7c
© Sepura plc 2011
The mechanism to switch the transceiver off from the console uses a Sepura proprietary
message sent over the console control data interface (pins 1 and 2).
Line level audio is supported on the 380-430MHz band transceiver with V9 software (or latter)
plus the appropriate Feature License Code (part number 600-00033) installed via Radio
Manager. 380-430MHz radios can be identified by having ―W‖ as the fifth character of the
nineteen character hardware code.
RS232 interface is [ITU-T V.24] & [ITU-T V.28] Compliant
LINE LEVEL AUDIO SUPPORT
The following table is a subset of the table in 6.4 showing only the relevant connections for
Line Level audio:
Line Level Audio IN (pins 7 and 8 on Console Interface 2) and
Line Level Audio OUT (pins 5 and 6 on Console Interface 2)
Transceiver
Pin No.
(15 way HD
D-type)
Console Pin No.
(16 way header)
Signal Name
Signal Direction
Signal Function
Signal Characteristics
Line
Audio
OUT
pair
5
Console
interface 2
2
LS_LINE_1
3
Line output from
audio subsystem.
LINE AUDIO OUT
See note 3 above
Maximum output ( peak DAC
output) 1.25 V
pk
sine, a.c. coupled,
into 600 Ω load.
6
Console
interface 2
4
LS_LINE_2
Output from audio
subsystem
Ground return for
audio line output.
Ground to audio star point
Line
Audio
IN
pair
7
Console
interface 2
1
MIC_LINE_SIG
Line input to audio
subsystem
LINE AUDIO IN
See note 3 above
Audio in: maximum operating level
( FSD on speech ADC) 0.65 V
pk
sine, AC coupled, into 600 Ω load
impedance.
8
Console
interface 2.
3
MIC_LINE_GND
Input to audio
subsystem.
Ground return for
microphone input.
Main ground via 100 Ω resistor.
Input voltage < 0.3 V (to ensure
input functions as microphone
input).
metal shell
6
Screen
-
Over-all cable screen
Connect to digital GND
It is expected that a 3
rd
party will construct a bespoke cable to bring the above connections
into use.
A splitter/breakout box (300-00221) is available to allow both connection of a Console and
facilitate simple connection by a third party cable (see over leaf).