Sepura plc SRG3500XB TETRA Mobile/Gateway Terminal User Manual Mobile Gateway

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Document Description	Mobile gateway accessories
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Date Submitted	2012-07-31 00:00:00
Date Available	2012-07-31 00:00:00
Creation Date	2012-07-30 12:48:44
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Document Lastmod	2012-07-30 12:48:44
Document Title	Mobile & Gateway
Document Creator	Microsoft® Office Word 2007
Document Author:	30th July 2012

sepura
Mobile & Gateway
Accessory i/f specification
SB-P-06-4066
PRODUCT BULLETIN
© SEPURA PLC 2011
sepura
SB-P-06-4066
Contents
LEGAL RESPONSIBILITIES........................................................................... 5
ISSUE HISTORY ............................................................................................. 6
PREFACE ........................................................................................................ 7
Introduction .............................................................................................................................. 7
Terminology ............................................................................................................................. 7
Abbreviations ........................................................................................................................... 7
Conventions ............................................................................................................................. 7
DECLARATION OF CONFORMITY ................................................................ 8
INTERFACE OVERVIEW .............................................................................. 10
Transceiver ............................................................................................................................. 10
Console ................................................................................................................................... 10
AIU Mk1 ................................................................................................................................... 11
AIU Mk2. .................................................................................................................................. 11
Example interconnect block diagram .................................................................................. 12
CONSOLE INTERFACE ................................................................................ 13
Connector details .................................................................................................................. 13
Transceiver connector. ......................................................................................................... 13
Console/AIU connector ......................................................................................................... 13
Signal details .......................................................................................................................... 14
Line Level Audio Support ..................................................................................................... 16
POWER SUPPLY INTERFACE..................................................................... 19
Connector details .................................................................................................................. 19
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Signal details .......................................................................................................................... 19
Speaker configurations ......................................................................................................... 21
AUDIO ACCESSORY INTERFACE (AAI) ..................................................... 22
Connector details .................................................................................................................. 22
Signal details .......................................................................................................................... 22
Audio Accessory Identity Table ........................................................................................... 24
Accessory Keys Table .......................................................................................................... 24
Audio gain .............................................................................................................................. 25
AIU MK 1 Jack Connectors ................................................................................................... 26
Connector Details .................................................................................................................. 26
Jack Signals ........................................................................................................................... 26
AIU MK 2 Jack Connectors ................................................................................................... 27
AAI2 – via jack connector ..................................................................................................... 27
RCI CONNECTIONS ..................................................................................... 29
Connector Details .................................................................................................................. 29
Signal details .......................................................................................................................... 29
DESK MOUNT UNIT CONNECTORS ........................................................... 31
Desk Microphone/Headset Connector................................................................................. 31
Connector Details .................................................................................................................. 31
Signals .................................................................................................................................... 31
Foot Switch Connector ......................................................................................................... 31
Connector Details .................................................................................................................. 31
Signals .................................................................................................................................... 32
Loudspeaker Connector ....................................................................................................... 32
DATA CONNECTOR INTERFACE ............................................................... 33
Connector details .................................................................................................................. 33
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Signal details .......................................................................................................................... 33
ANTENNA’S .................................................................................................. 35
Connector details .................................................................................................................. 35
Signal details .......................................................................................................................... 35
GPS ANTENNA ............................................................................................. 36
Connector details .................................................................................................................. 36
Signal details .......................................................................................................................... 36
CONSOLE AND AIU CABLE SPECIFCATION ............................................ 37
Cableform Mechanical Details .............................................................................................. 37
Cable form Grommet ............................................................................................................. 38
NOTICE ......................................................................................................... 39
Contact Details....................................................................................................................... 39
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© Sepura plc 2011
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LEGAL RESPONSIBILITIES
The information in this document is subject to change without notice and describes only the
product defined in this document. This document is intended for the use of Sepura plc‘s
customers and/or other parties only for the purposes of the agreement or arrangement under
which this document is submitted, and no part of it may be reproduced or transmitted in any
form or means without the prior written permission of Sepura plc.
The document has been prepared to be used by professional and properly trained personnel,
and the customer and/or other party assumes full responsibility when using it. Sepura plc
welcomes customer and/or other party comments as part of the process of continuous
development and improvement of the documentation.
The information or statements given in this document concerning the suitability, capacity, or
performance of the mentioned hardware or software products cannot be considered binding
but shall be defined in the agreement or arrangement made between Sepura Plc and the
customer and/or other party.
However, Sepura plc has made all reasonable efforts to ensure that the instructions contained
in the document are adequate and free of material errors and omissions. Sepura plc will, if
necessary, explain issues which may not be covered by this document.
Sepura plc‘s liability for any errors in this document is limited to the documentary correction of
errors. Sepura plc will not be responsible in any event for errors in this document or for any
damages, incidental or consequential, (including monetary losses), that might arise from the
use of this document or the information in it.
This document and the product it describes are considered protected by copyright according
to the applicable laws.
Other product names mentioned in this document may be trademarks of their respective
companies, and they are mentioned for identification purposes only.
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ISSUE HISTORY
Version
Date
Change
st
Version 1
1 June 2006
Version 2
24 July 2006
Version 3
22
Version 4
19 Jan 2007
Version 5
17 April 2007
Version 6
17 Feb 2009
Version 6a
6 May 2009
Version 6b
13 Aug 2010
Issue 7
15 Sept 2010
th
nd
Sept 2006
Added declaration of conformity statement.
Added abbreviations table.
Clarified difference between Mk1 and Mk2 AIU‘s.
Added cable form details.
Clarified data interface = PEI port
Corrected AIU Mk1 and Mk2 contents re audio accessory
support
Clarified MIC and EAR on RCI port no longer supported
AIU Mk1 superseded by AIU Mk2
Added Input freq spec and levels for GPS antenna
th
3679 parameter details added
SRM/G2 and 3 digital I/O capability clarification.
th
Added reverse battery polarity comment and note re digital
input resistance.
Corrected block diagram GPS connector.
Added GPS LNA gain requirement
th
Incorporates V9 changes (AIS Issue 7 and 8 of the
development document)
th
Added [ITU-T V.24] and [ITU-T V.28] RS232 serial data
compliant
th
Added comment to section 6 regarding sidetone being
present for all accessories
th
Corrected formatting issues found in issue 6b
th
Corrected hyperlink error on page 13 & 14. Added reference
for SCC AIS
th
Further tidy up of formatting
th
Corrected references to digital i/o on console (page10)
Issue 7a
10 Jan 2011
Issue 7b
20 Jul 2011
Issue 7c
Supersedes SB-P-05-4042
30 Jul 2012
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PREFACE
INTRODUCTION
This product bulletin describes the electrical and physical interfaces of the 2000 and 3000
series of Sepura Mobile and Gateway products.
It has been produced to enable accessory providers to interface their products to these radio
platforms.
TERMINOLOGY
Term
Definition
Signal names with lower case
―n‖.
These signals are active low.
ABBREVIATIONS
Convention
Description
AAI
Audio Accessory Interfaces
AIU
Application Interface Unit
DMU
Desktop Mount Unit
MDT
Mobile Data Terminal
RCI
Remote Control Interface
RCU
Remote Control Unit
PEI
Peripheral Equipment Interface
PTT
Press-to-talk switch.
CONVENTIONS
Convention
Description
Note icon, emphasizes related, reinforcing, or important information.
Caution icon. Indicates actions or processes that require caution from the user
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DECLARATION OF CONFORMITY
Sepura mobile terminals and approved accessories are compliant with the essential
requirements of the 1999/05/EC Radio and Telecommunications Terminal Equipment
(R&TTE) Directive. The mobile variants and accessories are specified in the Declaration of
Conformity number DC/C 02001-3.
A copy of the declaration is available from Sepura on request.
As such, Sepura mobile terminals are compliant with the following mandatory specifications:
Safety to relevant parts of EN 60950 (Safety of Information Technology Equipment). This
includes the Low Voltage Directive (LVD);
Electromagnetic Compatibility (EMC) to relevant parts of EN 301 489 (Electromagnetic
Compatibility & Radio Spectrum Matters);
TETRA air interface to EN 303 035 (Terrestrial Trunked Radio (TETRA); Harmonized EN for
TETRA equipment covering essential requirements under article 3.2 of the R&TTE Directive);
In addition, Sepura mobile terminals and Third Party Accessory must also maintain
conformance in the following areas:
Dust & moisture protection to IP54 or greater to meet the needs of the user environment and
the relevant parts of ETS 300-019; CEN1789:2000
Protection against Acoustic Shock to relevant parts of ITU P.360. Sepura mobile terminals
comply with the maximum audio levels specified for Longer Duration disturbances.
The performance of the mobile must not be compromised by the r.f. field generated by the
mobile interfering with the accessory (different versions of Sepura mobile terminals operate
over frequencies within the range 350 MHz to 900 MHz and generate signals complying with
TETRA standards).
For example no audio interference should occur when a TETRA portable transmitting at 1 W
r.f. power, at frequencies between 300 MHz and 900 MHz, is held within 1cm of the
accessory.
The product shall not degrade the performance of a SRM/G 3500/3900 installation when
tested to TETRA EMC spec. EN 301489-1&18 V1.6.1 (2005-09) Including Annex B.
The combination of the accessory and the mobile must be ―fit for purpose‖. The use of an
accessory must not make the mobile difficult or awkward to use, or in any way degrade its
performance.
It is most important that any accessory designed for use with Sepura mobile
terminals does not affect any of the current approvals
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Sepura requires the designer/manufacturer to:

Allow Sepura to review, and comment on, the ―Test Plan‖ — this document will
describe the tests to be performed by, or on behalf of, the Third Party accessory
designer/manufacturer to confirm continued compliance with the above specifications,

Provide Sepura with a ―technical file”, which shall contain design details and results of
tests undertaken and the appropriate Declaration of Conformity. The information must
be approved by Sepura prior to the Third Party supplying the Accessory to
customers.

Sepura must be notified of any amendment to the approved Accessory which could
affect the continued conformance. In the event that there is a problem, perceived or
real, with the interaction of Sepura mobile terminals and the supplied Third Party
Accessory, the Third Party must make available to Sepura documentary evidence of
relevant test results.
The “technical file” must be approved by Sepura prior to the Third Party supplying
the Accessory to customers.
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INTERFACE OVERVIEW
The Mobile and Gateway products are available as a one, two or three unit solution
supporting a mix of up to two Consoles or Application Interface Units (AIU) plus the
transceiver, allowing the radios to be used in many different applications and support up to 4
audio accessories such as handsets, fist microphones and headsets.
TRANSCEIVER
The SRM and SRG series of transceivers support:





2 off Console Interfaces - each can support a Console, an AIU, or an external data
application connected via a Sepura data lead. Any combinations of units on the two
Console Interfaces are possible. The Console interface is also used to customise and
program the unit via Radio Manager.
1 off Power interface providing connection for the battery, ignition sense line and also
the transceivers speaker.
3 digital inputs and 1 digital output on the power interface connector
1 off RF connector for the Tetra antenna.
GPS connector (optional).
The SRM2000, SRG2000 and SRM3500 series of transceivers are no longer
available; they have been superseded by the SRG3500/SRG3900 transceiver.
CONSOLE
Each Console provides:



2 off AAI ports allowing connection of two audio accessories. Each AAI supports
optional hook signalling, PTT input and up to 6 accessory keys.
1 off data interface with RS232 PEI port allows connection to an external data
application via a Sepura Data Lead. The interface is also used to customise and
program the unit via Radio Manager.
The extra 3 digital inputs and 1 digital output available on the transceiver power
interface connector are not available from the console.
For details of the SCC accessories interface, see document MOD-10-1253 for further
information
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AIU MK1
The AIU Mk1 provides:




2 off AAI ports allow connection of two audio accessories. Each AAI supports
optional hook signalling, PTT input and up to 6 accessory keys. AAI2 audio
connections are also mirrored to the Jack sockets, allowing flexibility in the
connection of audio accessories.
1 off data interface with RS232 PEI port allowing connection of an external data
application via a Sepura Data Lead. The interface is also used to customise and
program the unit via Radio Manager.
3 digital inputs.
1 digital output.
The AIU Mk1 (part number 300-00087) is no longer available, it has been
superseded by the AIU Mk2 (part number 300-00217).
AIU MK2.
The AIU Mk2 supersedes the MK1 device and provides:






1 off AAI allowing connection of one audio accessory. The AAI1 supports optional
hook signalling, PTT input and up to 6 accessory keys.
AAI2 is only presented on a Jack socket, allowing connection of a second audio
accessory.
1 off RCI port enabling control of the transceiver via an RCU such as the Sepura 30000164.
1 off data interface with RS232 PEI port allowing connection of an external data
application via a Sepura Data Lead. The interface is also used to customise and
program the unit via Radio Manager.
3 digital inputs.
1 digital output.
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EXAMPLE INTERCONNECT BLOCK DIAGRAM
The diagram shows just one of many possible solutions and highlights the flexibility of the
Sepura product.
Audio Accessory 1
Audio Accessory Interface (10 way Hirose)

Microphone input

Earpiece output

Hooking input

PTT input

Accessory soft key input

Accessory identifier input

Ground
Transceiver
Console Interface
(15 way HD Type)

Proprietary console interface
signaling

Standard RS232 PEI Port for
connection of third party
equipment and transceiver
programming.

Microphone line audio

Earpiece line audio

Console power

On/Off Control

Ground
Power Supply Interface
(15 way D Type)

Supply input and ground
reference

Ignition sense input

Loudspeaker Output

4 Programmable I/O
Console to Transceiver Cable
15 way HD type to 16 way Hirose
Audio Accessory 2
Console
or
AIU Mk1
Data Interface Connector
(15 Way HD Type)

Standard RS232 PEI
Port for connection of
third party equipment
and transceiver
programming

4 Programmable I/O
(AIU only)
Data Lead
15 Way HD Type to
9 Way D Type
MDT or
Programmer
GPS Connector (option)
SMC
Battery/
Ignition detect
Digital I/O
Loudspeaker
Antenna Connector
BNC
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CONSOLE INTERFACE
There are a number of Console Interfaces:
2 off on the Transceiver designated ‗Interface1‘ and ‗Interface 2‘.
1 off on the Console used to connect the Console back to the transceiver via ‗Interface1‘ or
‗Interface 2‘.
1 off on AIU Mk1 and 2 designated ‗TRX‘ used to connect the Console back to the transceiver
via ‗Interface1‘ and ‗Interface 2‘.
CONNECTOR DETAILS
TRANSCEIVER CONNECTOR.
Connector Type: 15 way high density D type female
11
12
13
14
10
15
Connector viewed from the rear of the Transceiver
CONSOLE/AIU CONNECTOR
Connector Type: Hirose 16 way male header,
Sepura part number 3513 999 99318
Mating plug: Hirose number DF11-16DS-2C
11
13
15
Connector viewed from the rear of the Console.
10
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12
14
16
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SIGNAL DETAILS
Transceiv
er Pin No.
(15 way
HD
D-type)
Console Pin
No.
Signal Name
(16 way
header)
14
CONSOLE_T
XD
Input to control Control data from the RS232 levels
subsystem
console.
16
CONSOLE_R
XD
Output
from Control data to the RS232 levels
control subsystem console.
PWR_ON
Output
from Switch signal to turn Low going edge triggered.
console subsystem transceiver on .
Pull to 0 V to switch-on.
(Pull up to un-switched
12 V
rail
in
the
transceiver.)
Assertion time: 10 ms
15
POWER_OUT Output from PSU Power
supply
subsystem
console
Console
interface
LS_LINE_1
Console
interface
LS_LINE_1
Signal Direction
Signal Function
Signal Characteristics
to 13V
nominal
supply,
enabled internally to the
transceiver. Includes over
current/temperature
protection.
Rated for 280 mA nominal
load 400 mA max.
Output from audio Audio line output to Maximum output ( peak
subsystem
console.
DAC output) 1.25 Vpk sine,
a.c. coupled,
into 600 Ω load.
Output from audio Audio line output to Maximum output ( peak
subsystem
console.
DAC output) 1.25 Vpk sine,
a.c. coupled,
into 600 Ω load.
Line output from LINE AUDIO OUT
audio subsystem.
See note 3 below
Maximum output ( peak
DAC output) 1.25 Vpk sine,
a.c. coupled,
into 600 Ω load.
LS_LINE_2
Output from audio Ground return for Ground to audio star point
subsystem
audio line output.
Console
interface
MIC_LINE_SI
Single
function: Audio
line
input
to
audio signal
subsystem.
microphones
connected
console.
input Maximum operating level
from ( FSD on speech ADC)
0.65 V
pk
sine,
AC
to coupled, into 600 Ω load
impedance.
Console
MIC_LINE_SI
Reserved
function
input Reserved input function
Mobile & Gateway Accessory i/f
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input Reserved
function
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Transceiv
er Pin No.
(15 way
HD
D-type)
Console Pin
No.
Signal Name
(16 way
header)
Signal Direction
interface
Input
to
subsystem
Signal Function
Signal Characteristics
audio Microphone input.
Audio
in:
maximum
operating level ( FSD on
speech ADC) 0.65 Vpk
sine, AC coupled, into
600 Ω load impedance.
Line input to audio LINE AUDIO IN
subsystem
See note 3 below
Audio
in:
maximum
operating level ( FSD on
speech ADC) 0.65 Vpk
sine, AC coupled, into
600 Ω load impedance.
Console
interface
MIC_LINE_G
ND
Input
to
subsystem.
audio Ground return for Main ground to audio star
microphone input.
point via 100 Ω resistor.
Console
interface
2.
MIC_LINE_G
ND
Input
to
subsystem.
audio Ground return for Main ground via 100 Ω
microphone input.
resistor.
Input voltage
must be < 0.3 V (to ensure
input
functions
as
microphone input).
Reserved function
Reserved function
Do NOT tie to ground
Output from control
subsystem
RS232 levels
Output from control
subsystem
RS232 levels
Input to control
subsystem
RS232 levels
RS232_RTS
Input to control Hardware
subsystem
control
flow RS232 levels
10
RS232_CTS
Output from control Hardware
subsystem
control
flow RS232 levels
14
RS232_DTR
Input to control Data terminal ready
subsystem
15
13
GND
Power Ground and return
for
digital
paths.
metal
shell
Screen
Over-all cable screen Connect to digital GND
RS232_DCD
10
RS232_RXD
11
12
RS232_TXD
12
11
13
RS232 levels
Notes:
Intentionally blank
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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.
Console Pin No. Signal Name
(15 way HD (16 way header)
D-type)
Line
Console
interface 2
Audio
OUT
pair
Console
interface 2
Line
LS_LINE_13
Signal Direction
Signal Function
Line output from LINE AUDIO OUT
audio subsystem.
See note 3 above
Signal Characteristics
Maximum output ( peak DAC
output) 1.25 Vpk sine, a.c. coupled,
into 600 Ω load.
LS_LINE_2
Output from audio Ground return for Ground to audio star point
subsystem
audio line output.
MIC_LINE_SIG
Line input to audio LINE AUDIO IN
subsystem
See note 3 above
MIC_LINE_GND
Input
to
subsystem.
Screen
Console
interface 2
Audio in: maximum operating level
( FSD on speech ADC) 0.65 Vpk
sine, AC coupled, into 600 Ω load
impedance.
Audio
IN
pair
Console
interface 2.
metal shell
audio Ground return for Main ground via 100 Ω resistor.
microphone input.
Input voltage < 0.3 V (to ensure
input functions as microphone
input).
Over-all cable screen
Connect to digital GND
rd
It is expected that a 3 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).
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© Sepura plc 2011
Only one of these options may be programmed at a time using the Radio
Manager.
300-00221 Splitter/Breakout Box
Line -out Audio,
No Mic, No
Sidetone
PTT
Light-Bar
PA Loudspeaker
Line -out Audio,
with Mic
DAT
DAT
recorder
Handsfree mic
Call Detail
Recorder
PEI data
REAR of
VEHICLE
FRONT of
VEHICLE
1 2
PTT4 TRX2
5V supply
F1
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SB-P-06-4066
PTT3 TRX1
Expander box
Line -outSSU
Audio,
No Mic, No
Sidetone
PTT
A console connected to Console
Light-Bar
These
cables
carry
unamplified
This
is the
ignition
detect
line into
Loudspeaker
Interface 1 can support PA
the
full
mic
eachsignal
TRX
rangeLine
of-out
accessories
–
even
with
Audio,
with Mic
Line Audio
enable
DAT
K30
GND
Console attached to Interface 2 with
1 Audio enabled If a console is
Line
connected
to Console Interface 2 and
Line Audio is also enabled, you cannot
attach and accessory with an earpiece.
This is because the audio is set at a
specific level.
DAT
recorder
PTT
Handsfree mic
PEI data
PWR
RX2
PWR
CIF1
Call Detail
Recorder
CIF2
TRX1
5V supply
The above shows a just one possible installation option with two consoles, the
splitter/breakout box together with what accessories may be attached whilst Console Interface
2 is programmed to support Line Level Audio.
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A third-party MDT manufacturer could equally attach his MDT audio IN and OUT in place of
the items shown in Red above
For more details - please refer to:


Feature Description V9 bulletin number MOD-08-538 for details on the options
available whilst using Line Level Audio.
Radio Manager v1.5 onwards
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POWER SUPPLY INTERFACE
There is a single Power Supply Interface located on the rear panel of the Transceiver.
CONNECTOR DETAILS
15 way male D type
Connector viewed from the rear of Transceiver.
SIGNAL DETAILS
Pin
SRM Signal
Name
Number
Input/
SRM2
Description
Performance
Output
1,2,9,10
GND_CAR
Supply input
0V
4,5,11,12
12V_CAR
Supply input
17V absolute max.
15.6V max operating
13.2V nominal,
10.8V min. operating
Abs. max operating current 7.5A
See notes below.
I(off) <5mA
I(stby, registered) <450mA
I(rx, speech full volume) <2.3A
I(Tx, 10W single slot) <5.1A
All currents assume a single Console connected.
Reverse polarity protection (see note 9)
IGN_SENSE
On-Off
See notes overleaf.
LS_B
Loudspeaker
See signal LS_A
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Pin
SRM Signal
Name
Number
Input/
SRM2
Description
Performance
Output
GPI_1
Programmabl
e I/O input 1
VIH min = 2.0V
VIL max = 0.8V
Protected against accidental application of vehicle supply
voltage
Assertion time: >100ms
(see also note 10)
GPI_3
Programmabl
e I/O input 3
VIH min = 2.0V
VIL max = 0.8V
Protected against accidental application of vehicle supply
voltage
Assertion time: >100ms
(see also note 10)
13
LS_A
Loudspeaker
Typical solution is a balanced 4 ohms single speaker with
8W maximum load power.
The speaker drive is rated to support two parallel 4 ohm
speakers in a balanced 2 ohm configuration.
Speakers with power rating of less than 8W may be prone
to damage.
See section 5.3
14
ODO_1
Programmabl
e I/O output
Open drain, active low.
500mA max sink current
15.8V max external voltage
Protected against inductive loads.
VOL max = 200mV @ 0.5A
15
GPI_2
Programmabl
e I/O input 2
VIH min = 2.0V
VIL max = 0.8V
Protected against accidental application of vehicle supply
voltage
Assertion time: >100ms
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Pin
Number
SRM Signal
Name
Input/
SRM2
Description
Performance
Output
(see also note 10)
Screen
Screen
Notes:
1. The Transceiver will power up if the on/off key (PWR_ON) is held ‗on‘ on the Transceiver
regardless of the state of the ignition (IGN_SENSE) signal.
2. The Transceiver hardware will power up if the ignition line (IGN_SENSE) goes high at
the same time that the power input goes high and the power input is >10V. The power
input must rise at a rate of >100V/s for the product to power up.
3. The Transceiver hardware will power up if the power input is present and >10V and the
ignition line (IGN_SENSE) goes high.
4. The mechanism to switch the transceiver off from the console uses a message sent over
the console interface.
5. The Transceiver software is able to turn the Transceiver off even if the ignition
(IGN_SENSE) is high.
6. A Transceiver software parameter 3679 – Inactivity Timer - can be configured so that the
Transceiver will switch off immediately the ignition (IGN_SENSE) goes low or after a
defined period of inactivity.
7. Neither of the power up signals; PWR_ON and IGN_SENSE, maintains the Transceiver
power on (i.e. they are non-latching). The Transceivers own software is responsible for
holding the Transceiver internal power supply on.
8. It is NOT possible to disable the ability of Console Mode button to power the radio ON or
OFF
9. Reverse polarity protection is provided. When reverse polarity connected a diode allows
in excess of 10A to flow through it, this will cause the external fuse to break and cut off
the battery power without damaging the radio.
10. There is a pull-down resistance on each digital input. The resistance to ground, will vary
in the range 10k to 27k ohms depending on the applied input voltage, this because there
is a resistor divider network feeding a transistor junction
SPEAKER CONFIGURATIONS
Typically only one 4ohm 8w speaker is connected to the
transceiver
However the speaker driver is rated to support two parallel
4ohm speakers in a balanced 2 ohm configuration as shown
below.
No dual speaker adapter cable is currently available from
Sepura, it is expected that the installer will manufacture an
appropriate splitter cable
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5V supply
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AUDIO ACCESSORY INTERFACE (AAI)
There are two AAI ports designated AAI1 and AAI2 located on the Console and AIU. A subset
of AAI2 connections are duplicated on two jack sockets on AIU Mk1.
AIU Mk2 supports the AAI2 interface via jack connectors only.
NOTE:- Audio side-tone is permanently present for all accessories!
CONNECTOR DETAILS
Header: Sepura 3513 999 99316
Mating plug: Hirose number DF11-10DS-2C
Connector viewed from the rear of the Console or AIU.
10
SIGNAL DETAILS
Pin
Signal
Name
Number
Input/
Description
Comment
Output
ACC_ID
Accessory
Identity
5V ADC input with internal 47k pull-up.
section 6.3
GND
Main
return
SCN
Screen
Connection
ACC_KE
YS
Accessory Keys
5V ADC input with internal 330R pull-up.
section 6.4
nON_HO
OK
Hook Signal
5V CMOS input, active low.
Ground
Internal 47k pull up to 5V
nPTT
Mobile & Gateway Accessory i/f
specification
PTT input
5V CMOS input, active low.
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See
See
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Pin
Signal
Name
Number
Input/
Description
Comment
Output
Internal 47k pull up to 5V
MIC_SIG
Microphone
input
Console & AIU mk. 1, 2, 3
Sensitivity at ―normal‖ setting = 100 mVpp for
max. modulation.
Sensitivity at default ―high‖ setting = 10 mVpp for
max. modulation.
DC bias via internal 2.2 kΩ pull-up to 3 V when
microphone enabled; floating when microphone
muted. Zin = 2.2 kΩ.
AIU mk. 2 1, 3
Sensitivity at default ―normal‖ setting =
150 mVpp for max. modulation.
Sensitivity at default ―high‖ setting = 15 mVpp for
max. modulation.
DC bias via internal 4.4 kΩ pull-up to 3 V.
Zin = 1 kΩ.
If microphone resistance < 100 Ω, “high” sensitivity
is selected.
Sensitivity = 15 mVpp for max.
modulation.
MIC_GND
Microphone
return
EAR_SIG
Earpiece output
32 ohms, power capability = approx 100 mW max.
(See note 7 below)
10
EAR_GN
Earpiece return
Notes:
1. Transceiver gain set to reference level, see section 6.5
2. The AIU Mk1 has been superseded by the AIU Mk2.
3. There are two audio gain settings: ―normal‖ intended for handheld microphones and
―high‖ intended for remote microphones. If the audio accessory identification resistor
(see section 6.3) is 10 kΩ, or greater, the ―normal‖ gain setting is selected. ―High‖
gain (20 dB higher than ―normal‖ gain) is always selected when the audio accessory
identification resistor is 0 Ω, i.e., ACC_ID is connected to ground.
4. AIU Mk2 only If the microphone resistance is < 100 Ω, the gain will be ―high‖. This
functionality is intended to allow dynamic microphones to operate with this interface
— as used in certain motorcycle helmet installations.
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Accessory ID resistor Microphone resistance
≥ 10 kΩ
> 1 kΩ, e.g., electret
≥ 10 kΩ
< 100 Ω, e.g., moving
coil (AIU Mk2)
0Ω
any value
Gain setting
―Normal‖
―High‖
―High‖
5. The earpiece amplifier does not have any output current limiting resistors fitted and is
designed to drive loads with a minimum impedance of 8 Ω loads from a 5 V supply
6. The transceiver mutes the microphone by turning off the electret microphone DC
supply on pin 7 of the AAI. If the audio source is not an electret microphone, then the
accessory must implement its own mute by detecting the loss of the DC voltage from
this pin.
7. When Normal gain is selected, the presence of a microphone load with a resistance
of less than 100 Ohms will automatically select a higher gain signal path. This
functionality is intended to allow dynamic microphones to operate with this interface as used in certain motorcycle helmet installations. The transceiver is unaware of any
gain change.
8. These signals and pin out are not compatible with SRM1000 accessories.
AUDIO ACCESSORY IDENTITY TABLE
The transceiver identifies audio accessories attached to an AAI through the resistance
presented between pin 1 and pin 2 of each AAI.
Audio Accessory Type
Associated identifying
resistor value, ohms
Nominal
ADC value
(2%)
Nominal
voltage on
ACC_ID pin, V
no device attached

255
reserved
220k
4.1
210
local microphone, PTT & hook, (e.g. fist
microphone)
100k
3.4
173
local microphone, PTT, earpiece & hook
(e.g. handset);
47k
2.5
128
local microphone & PTT without hook
(e.g. desk microphone)
22k
1.6
82
local microphone, PTT & earpiece without
hook (e.g. headset)
10k
0.88
45
remote microphone & switches without
hook;
ACCESSORY KEYS TABLE
The transceiver identifies which accessory key is pressed through the resistance presented
between pin 4 and pin 2 of each AAI.
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Device state
Key press
Nominal voltage on ACC_KEYS
pin, V
Nominal ADC value
not attached
N/A
5.00
255
attached
None
4.51
230
attached
3.94
201
attached
3.35
171
attached
2.70
139
attached
2.00
102
attached
1.46
74
attached
0.85
44
The accessory keys use a circuit structure like that given below. Resistor values and
associated logical key numbers (which map to functions specified by the Radio Manager) are
as follows:
68
RR
68R
ACC_KEYS
82
180
560R
270
1800R
GND
Key number =
AUDIO GAIN
Different microphones require different gains settings, e.g., a fist microphone will usually
require a lower gain setting than a remote microphone.
The audio gains of different microphone categories, e.g., fist microphone and headset, can be
adjusted over a 45 dB range via Radio Manager. This gain variation takes place in the
transceiver and is in addition to the console and AIU sensitivity settings, ―normal‖ and ―high‖,
described in section 6.2. The sensitivities for the console and AIU stated in section 6.2 are
achieved when the transceiver audio gain - programmable via Radio Manager - is set to
24 dB.
Accessory
Radio Manager default setting
Covert microphone
30 dB
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Radio
includes
transceiver
settings for
Desk Microphone
manager
default
gain
various
Fist microphone
Handset
Headset
Remote microphone
27 dB
accessories, but if these are incorrect for a particular customer‘s needs, the gain can be
programmed to any setting within the 45 dB range.
AIU MK 1 JACK CONNECTORS
Jack sockets provide an alternative method for connecting audio accessories to the AIU Mk1.
The jack sockets are an alternative format for the AAI2 connector.
One Jack socket designated ‗MIC‘ supports:


Microphone audio.
Accessory ID.
The other Jack socket designated ‗PTT‘ supports:


PTT.
Accessory key 5 only.
It should be noted that in the AIU Mk1 the Jack sockets share the AAI2 audio
connections; hence accessories must not be plugged in to the Jack sockets and the
AAI2 connector at the same time.
CONNECTOR DETAILS
Stereo 3.5mm Jack socket. Mechanical latching is provided by securing the jack plug body to
features in the AIU mounting plate
JACK SIGNALS
MIC‘ Jack Socket:
Jack
Pin
reference):
number
Identification
Mobile & Gateway Accessory i/f
specification
(for
Pin
Signal Name
GND
ACC_ID (AAI-2 Channel)
MIC_SIG (AAI-2 Channel)
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‗PTT Jack Socket:
Pin
Signal Name
GND
Jack key input
nPTT (AAI-2 Channel)
10 kΩ pull-up to 5 V in the AIU.
Connecting this pin to GND via a 22 kΩ (or less) resistance will
cause the console software to see ‗Accessory Key 5‘ pressed on
AAI2.
Note if an SRH side jack microphone is connected in the via the microphone jack socket, the
ACC_ID signal will be shorted to GND (pins 1 and 2 shorted) by the mono jack plug, so the
remote microphone accessory will be detected correctly
AIU MK 2 JACK CONNECTORS
On the Mk 2 version of the Accessory Interface Unit (AIU) some of the pin functionality is reallocated on the AAI2 connector and the connector is renamed ―Remote Control Interface‖
(RCI) (see section 7).
The AIU Mk 2 has a VOGAD circuit in line with both of the microphone paths. The gain on the
AAI1 and AAI2 mic paths can be locally varied according to the type of microphone connected
and a microphone detect function is provided on AAI1.
AAI2 – VIA JACK CONNECTOR
For AIU Mk 2 the AAI2 audio input functionality is only available via the jack connector. The
performance and expected signal properties are slightly different from those of AIU Mk 1.
Jack Pin
Number
Signal
Name
MIC_SIG
Input/
Description
Performance
Microphone input
Normal gain: 150mVrms nominal
Output
High gain: 15mVrms nominal
Low gain: 1.2 Vrms nominal.
2.2 kΩ internal pull up to 8V.
The higher bias voltage and the addition of microphone load detection, allow this interface to
operate with active remote microphones e.g.
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Accessory
ACC_ID2
ID
resistor, Microphone resistance or current
≥ 10 kΩ
> 20 kΩ
electret
≥ 10 kΩ
< 100 Ω, e.g., moving coil
―Low‖
≥ 10 kΩ
≥ 1.5 mA, e.g., active electret
―Low‖
0Ω
> 20 kΩ
electret
Mobile & Gateway Accessory i/f
specification
(< 0.4 mA),
Gain setting
(< 0.4 mA),
e.g.,
e.g.,
30th July 2012
Issue 7c
passive ―Normal‖
passive ―High‖
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RCI CONNECTIONS
The RCI is present on the AIU Mk2 only. It allows an RCU to control the features of the
transceiver without using the radio console
CONNECTOR DETAILS
Header: Sepura 3513 999 99316
Mating plug: Hirose number DF11-10DS-2C
View looking at connector mounted on the AIU Mk 2 PCB.
10
SIGNAL DETAILS
Pin
Signal Name
Number
Input/
Description
Performance
Supply output
Supply output to power remote
control devices.
Output
8V5
8.5v Current limited to ~500mA
GND
Main Ground return
DATA
I/O
1-wire data
3v Logic Levels, Sepura proprietary
protocol (see note 1 below)
ACC_KEYS
Accessory Keys
5V ADC input with internal 330R
pull-up. See section 6.4
nON_HOOK
Hook Signal
5V CMOS input, active low.
Internal 47k pull up to 5V
nPTT
PTT input
5V CMOS input, active low.
Internal 47k pull up to 5V
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MIC_OUT_SIG
Microphone output
Buffered version (0dB gain) of the
Jack Microphone input signal. AC
coupled with internal 6k8 load
resistor to MIC_OUT_GND (see note
3)
MIC_OUT_GND
Microphone output
return
EAR_SIG
Earpiece output
32 ohms, power capability = 100 mW
max (see note 2 and 3 below).
10
EAR_GND
Earpiece return
Notes:
One wire data for support of an RCU such as the Sepura 300-00164
The earpiece amplifier does not have any output current limiting resistors fitted and is
designed to drive a minimum of 8ohm loads from a 5V supply.
The MIC_OUT and EAR signals are no longer supported within the software for this interface.
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DESK MOUNT UNIT CONNECTORS
The transceiver may be mounted within the case and the console mounted on top of a Desk
Mount Unit to facilitate operation outside of a vehicle.
The Audio Accessory Interface signals from the AAI1 connector on the back of the Console
are cabled to a 9-way ‗D‘ socket and a ¼‖ jack socket to allow for connection of a range of
desk accessories.
DESK MICROPHONE/HEADSET CONNECTOR
CONNECTOR DETAILS
9-way, standard density D-socket, with 2 off 4-40UNC hex pillars.
SIGNALS
The following signals connect back to the AAI1 connector in the back of the Desk Mount Unit
console. See section 0 for Signal details.
Pin
Signal
Name
Comments
ACC_ID
See section 6.3
GND
See section 6.2
ACC_KEYS
See section 6.4
EAR_SIG
See section 6.2
EAR_GND
See section 6.2
nON_HOOK
See section 6.2
MIC_SIG
See section 6.2
MIC_GND
See section 6.2
nPTT
See section 6.2
Shell
GND
FOOT SWITCH CONNECTOR
CONNECTOR DETAILS
Panel mounted, ¼‖ 3-pole jack socket with a mechanical latching mechanism. (e.g. Neutrik
NJ3FP6C).
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SIGNALS
Pin
Signal
Name
Comment
Sleeve
GND
GND
Ring
GND
GND
Tip
nPTT
See section 6.2
LOUDSPEAKER CONNECTOR
The Desk Mount Unit has an internal speaker. Connection to the speaker is made on the rear
of the unit where there is a 2-pin plug which will accept the speaker connector form the Desk
Mount Unit power supply lead.
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DATA CONNECTOR INTERFACE
A single Data Interface Connector is located on:


The lower surface of the Console.
On the outside of the AIU.
CONNECTOR DETAILS
Connector Type: 15 way high density female D type. Type JST KSEY-15S-1A3F19-13
11
12
13
14
15
10
SIGNAL DETAILS
Pin
Signal Name
AODO /MIS
Signal Function
Signal Function &
Signal Characteristics
Open drain, active low.
Console Programming &
Programmable I/O -Output
500mA max sink current
15.8V max external voltage
Protected against inductive loads.
An external 10 kΩ pull-up resistor to 5V is
required for console programming. See {1} for
details
VOLmax = 300mV
MOSI
Console Programming Input
5V logic. See {1} for details.
nReset
Console Programming - Input
5V logic. See {1} for details.
SCK
Console Programming - Input
5V logic. See {1} for details.
5V
Console Programming Output
5V nominal, 10mA max.
Not protected against misuse.
AGPI_1
Programmable I/O - Input
Mobile & Gateway Accessory i/f
specification
30th July 2012
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VIH min = 2.0V
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Pin
Signal Name
Signal Function
Signal Function &
Signal Characteristics
VIL max = 0.8V
Protected against accidental application
of vehicle supply voltage
Assertion time: >100ms
AGPI_2
VIH min = 2.0V
Programmable I/O - Input
VIL max = 0.8V
Protected against accidental application
of vehicle supply voltage
Assertion time: >100ms
AGPI_3
VIH min = 2.0V
Programmable I/O - Input
VIL max = 0.8V
Protected against accidental application
of vehicle supply voltage
Assertion time: >100ms
RS232_DCD
RS232 Data
See section 4.4
10
RS232_RXD
RS232 Data
See section 4.4
11
RS232_TXD
RS232 Data
See section 4.4
12
RS232_RTS
RS232 Data
See section 4.4
13
RS232_CTS
RS232 Data
See section 4.4
14
RS232_DTR
RS232 Data
See section 4.4
15
GND
See section 4.4
Metal
shell
Screen
See section 4.4
Notes
There is a pull-down resistance on each digital input. The resistance to ground, will vary in the
range 10k to 27k ohms depending on the applied input voltage, this because there is a
resistor divider network feeding a resistor junction
Only the AIU supports digital inputs or outputs, the console does not.
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ANTENNA’S
CONNECTOR DETAILS
Type: BNC socket.
SIGNAL DETAILS
Pin
Signal Name
Signal Function
Signal Function &
Signal Characteristics
Centre
ANTENNA
Main TETRA RF input/output
10W max average power (20W max.
peak) during transmission
DC grounded internally using 100K
resistor
Outer
GND
Ground return
Mobile & Gateway Accessory i/f
specification
Ground
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GPS ANTENNA
CONNECTOR DETAILS
Type: SMC female (on the radio).
SIGNAL DETAILS
Pin
Signal
Name
Signal Function
Signal Function &
Signal Characteristics
Centre
GPS_ANT
GPS RF input and
active antenna DC
feed
Vnom.5V
I max.40mA
Internally protected against external short
circuits to ground.
RF input from GPS antenna = 1575.42 MHz
(L1 Band) at a level between –135 dBm and –
152 dBm into a 50 Ω impedance.
LNA gain see note 1 below
Outer
GND
Ground
Ground return
Notes:
The GPS circuitry within the SRM/G will operate with a passive antenna. However due to
cable loss an active antenna with LNA gain between 20dB and 30dB is advised to counter the
cable loss. Sepura supplied GPS antennas have an LNA gain of 26dB to counter a 5dB loss
in 5m coax cable.
Active antenna‘s draw 5V dc at up to 40mA.
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CONSOLE AND AIU CABLE SPECIFCATION
In order to connect audio accessories to the Console or AIU, the cable form and its retaining
grommet should adhere to the following specification:
CABLEFORM MECHANICAL DETAILS
Overall dimensions
Accessory termination
Plug termination
116 ± 2mm
Less than 3000mm (see note 1)
ØOD = 5.2 +/- 1mm
As
required
for
accessory termination
Plug Termination
116+/-2mm
Stripped section: 76 +/- 2 mm
20 mm min
mm
typ
Plug
Identifier:
grommet:
Ø = 5.5mm max
see section x 25mm typ
12.2
Sleeve over jacket Mic
coax
breakout:
break-out
Ø = 6mm max
See note 2
x 10mm typ
Sleeve over any mic
coax break-out and
other wires: 10mm
typ.
Hirose
Plug
See note 3
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Notes:
The complete overall length of cable for any accessory including any extension leads must
not exceed 3000mm.
Longer cable lengths will require Sepura to obtain further approvals before the
accessory may be used, the costs re-approval will be borne by the accessory
designer/manufacturer.
In order for the accessory to achieve the required conformity, it is recommended that the
cable be overall screened and Mic signals to be additionally screened.
To avoid shorting any exposed length of overall drain and microphone screen must be
sleeved with a tight fitting heat shrink to achieve a shrunk-down diameter of approximately
1mm to fit into the insulation crimp of the Hirose pins.
CABLE FORM GROMMET
Tolerance:
Projection:
Fixing method:
Material:
Pull force:
Tooling:
Surface finish:
linear dimensions ± 0.1mm, angles ± 1º
rd
3 angle
moulded onto cable.
polyurethane type 58300, shore hardness 80A, colour black.
Grommets to withstand a minimum pull force of 100N.
Sepura Development to approve gate position prior to tool manufacture.
polished
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NOTICE
All rights reserved. This document may not be reproduced in any form either in part or in
whole without the prior written consent of Sepura plc, nor may it be edited, duplicated or
distributed using electronic systems.
Company and product names mentioned in this document may be protected under copyright
or patent laws.
The information in this document is subject to change without notice and describes only the
product defined in this document. This document is intended for the use of Sepura customers
and/or other parties only for the purposes of the agreement or arrangement under which this
document is submitted, and no part of it may be reproduced or transmitted in any form or
means without the prior written permission of Sepura plc.
CONTACT DETAILS
Sepura plc
Radio House
St Andrew‘s Road
Cambridge CB4 1GR
United Kingdom
Web :
www.sepura.com
Tel:
+44 (0)1223 876000
Fax:
+44 (0)1223 879000
Mobile & Gateway Accessory i/f
specification
30th July 2012
Issue 7c
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© Sepura plc 2011

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Title                           : Mobile & Gateway
Author                          : 30th July 2012
Subject                         : Accessory i/f specification
Keywords                        : SB-P-06-4066
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Modify Date                     : 2012:07:30 12:48:44
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