Ericsson 19D901868G3, 19D901868G4 User Manual

LBI-38988B

Configuration Manual

EDACS Station GETC1e

19D901868G3 a nd G4

ericssonzericssonz

LBI-38988

REVISION HISTORY

REVISION DATE REASON FOR CHANGE

B Sep-95 Updated to include Station GETC1e Release 5 software, 349A9607G5 and Turbo

Board software, 344A4414G5.

A Jan-95 Updated to include Station GETC1e Release 4 software, 349A9607G4 and

instructions for using PC Programmer TQ-3357 V4.03.

Jul-94 Original

NOTICE!

This manual covers Ericsson and General Electric products manufactured and sold by Ericsson Inc.

NOTICE!

Repairs to this equipment should be made only by an authorized service technician or facility designated by the supplier.
Any repairs, alterations or substitution of recommended parts made by the user to this equipment not approved by the
manufacturer could void the user's authority to operate the equipment in addition to the manufacturer's warranty.

NOTICE!

The software contained in this device is copyrighted by Ericsson Inc. Unpublished rights are reserved under the copyright
laws of the United States.

This manual is published by Ericsson Inc., without any warranty. Improvements and changes to this manual necessitated
by typographical errors, inaccuracies of current information, or improvements to programs and/or equipment, may be made
by Ericsson Inc., at any time and without notice. Such changes will be incorporated into new editions of this manual. No
part of this manual may be reproduced or transmitted in any form or by any means, electronic or mechanical, including
photocopying and recording, for any purpose, without the express written permission of Ericsson Inc.

EDACS and MASTR are registered trademarks, and Aegis, Failsoft, GETC, Guardog , and ProSound are trademarks of
Ericsson Inc.

Copyright July 1994, Ericsson, Inc.

2 Rev. B

TABLE OF CONTENTS

Page

REVISION HISTORY

..............................................................................................................................

2

INTRODUCTION

6

SOFTWARE FEATURES

6

349A9607G5 SOFTWARE

6

SCAT Data

6

Pro-Sound

6

Enhanced Multi-Site Login

7

Voted Digital Interconnect

7

DIP Switch Changes

8

349A9607G4 SOFTWARE

8

Multisite Digital Voice or Digital Data

8

RELATED PUBLICATIONS

9

SOFTWARE COMPATIBILITY

9

GETC EPROM and TURBO BOARD SOFTWARE COMPATIBILITY

9

EDACS COMPONENT SOFTWARE COMPATIBILITY

9

RADIO COMPATIBILITY

10

HARDWARE COMPATIBILITY

11

DESCRIPTION

12

OPERATION

12

CONTROL CHANNEL

12

Control Channel Jamming

12

WORKING CHANNEL

12

TRUNKED FAILSOFT OPERATION

12

STATION CONTROL

13

CONFIGURATION

14

HARDWARE INSTALLATION

14

Upgrading Hardware

14

GETC Logic Board Installation

14

Turbo Board Installation

14

Rockwell Modem Installation

15

Jumper Installation

15

GETC SOFTWARE INSTALLATION

17

Trunked Failsoft System

17

Fully Trunked Systems

18

Satellite Receivers & Simulcast Remote TX

19

Single Channel Autonomous Trunking (SCAT)

19

Voted Digital Interconnect (VDI)

19

De-installing The GETC-1e Software

20

TURBO BOARD SOFTWARE INSTALLATION

20

Equipment Required

20

PC Programmer Setup

21

PERSONALITY PROGRAMMING

21

Programming a Personality Using TQ-3357 V3 (or earlier)

21

Programming a Personality Using TQ-3357 Version 4.03 (or later)

22

OPERATIONAL CHECKOUT

26

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LBI-38988

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Rev. B 3

LBI-38988

TABLE OF CONTENTS

DIP Switch Settings...................................................................................................................... 26

Fully Trunked System...................................................................................................................26

Failsoft System..............................................................................................................................27

Satellite Site Receiver...................................................................................................................28

INTERFACE SIGNALS......................................................................................................................28

TROUBLESHOOTING...........................................................................................................................29

FAILURE MODE................................................................................................................................29

CHANNEL ACTIVITY LOGGER.......................................................................................................29

IN CASE OF DIFFICULTY................................................................................................................29

INTERCONNECT DIAGRAMS..............................................................................................................33

PARTS LIST.............................................................................................................................................36

GETC CABLE 19C336863G1.............................................................................................................36

CABLE DIAGRAMS ............................................................................................................................... 37

APPENDIX A............................................................................................................................................A-1

APPENDIX B............................................................................................................................................ B-1

Page

LIST OF FIGURES

Page

Figure 1 - Typical EDACS Site Block Diagram...................................................................11

Figure 2 - Typical Five Channel Repeater Cabinet...............................................................14

Figure 3 - GETC Phone Line Level Adjustments.................................................................15

Figure 4 - Station GETC (19D904266) Jumper and Test Point Locations............................16

Figure 5 - System Hook-Up Using J100...............................................................................22

Figure 6 - Programming DIP Switch Settings......................................................................22

Figure 7 - System Hook-Up Using J104...............................................................................23

Figure 8 - Operational DIP Switch Settings.........................................................................26

4 Rev. B

LIST OF TABLES

Page

Table 1 - GETC EPROM and Turbo Software Compatibility

...............................................

9

Table 2 - EDACS Component Software Compatibility

10

Table 3 - Radio Compatibility

10

Table 4 - GETC Hardware Compatibility

11

Table 5 - Indicators in Programming Mode Using J100

22

Table 6 - Indicators in Programming Mode Using J104

23

Table 7 - Sample Station Personality

24

Table 8 - Channel Number Switch Settings

26

Table 9 - LED Indicators for Trunked Idle Channels

27

Table 10 - LED Indicators for Trunked Assigned Channels

27

Table 11 - LED Indicators for Failsoft Idle Channels

27

Table 12 - LED Indicators for Failsoft Assigned Channels

28

Table 13 - LED Indicators for Satellite Site Receivers

28

Table 14 - Failure Modes

29

Table 15 - Interface Status During Various States

30

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LBI-38988

Rev. B 5

LBI-38988 INTRODUCTION

INTRODUCTION

This manual provides instructions for configuring the

Ericsson GE Trunking Card Shelf (GETC), part number
19D901868G3 and G4, for Station (including repeater an d
SCAT), Satellite Site Receiver, and VDI Control operation.

This manual is applicable to GETC (pronounced “get­see”) hardware platforms installed in wideband or narrow
band 800 MHz, 900 MHz, UHF, and VHF stations. The
information presented includes an operational description
and procedures for installing, upgrading, and verifying the
hardware and software installed in the GETC.

The Lightning GETC (GETC1e) platform consists of
the following sub-assemblies:

• Logic Board 19D904266G1 (used with Group 3

shelf) or 19D904266G4 (used with Group 4 shelf).

• GETC Expansion Module (Turbo Board)

19D903536P1.

• Regulator Board 19C366861G2.

• Rockwell Modem 19A705178P1 (optional). (The

modem is required when the GETC is used in an
EDACS Voted or Simulcast System or if it is part
of an EDACS Network)

• GETC EPROM (U2) 349A9607G5 (Ver. 5.04).

349A9607G5 SOFTWARE

The 349A9607G5 software release adds the following

features to GETC operation:

• SCAT Data (Refer to LBI-38987)

• Pro-Sound

• Enhanced MultiSite Login

• Voted Digital Interconnect (Refer to LBI-39187)

SCAT Data

Release 5 Station GETC software adds SCAT
functionality to the Station GETC. This includes the SCAT
RF and Landline Data functions. The former SCAT GETC
software 344A3835G2 is replaced with 349A9607G5 and
its former Turbo software 344A4414G4 is replaced by Link
Turbo software 344A4414G5.

NOTE

NOTE

In conjunction with this software release, the

SCAT Downlink GETC software 344A3835G2

and Turbo Board software 344A4414G4 is

replaced by Link software 344A4895G5 and Turbo

software 350A1121G5, respectively. Refer to LBI-

38987 for details.

All references to GETC in this manual refer to the
GETC1e platform and the combination of GETC Logic
board and Turbo board installed in the GETC Shelf.

SOFTWARE FEATURES

The GETC software product is continuously being
improved and upgraded to include new features. The
following paragraphs provide brief descriptions of the new
features introduced by recent software releases.
Information is also provided when hardware or software
issues affect the GETC’s configuration.

For a complete description of the new or enhanced
features and its use, refer to Software Release Notes (SRN)
for the specific software release. For example, to review
release notes covering 349A9607G4 software refer to
SRN1060-4, for 349A9607G5 software refer to SRN1060­5, etc.

Configuration Considerations:

• Radio users must have SCAT options enabled.

• When selecting Landline data, a Rockwell modem

must be installed and EDG must be set up (refer to
EDG documentation).

• Configuration requires using PC Programmer

V4.03 and Field Macro “gtc_9505.mac” to
access applicable parameters.

Refer to LBI-38987 for complete details on configuring

SCAT systems.

Pro-Sound

The GETC Group 5 Release adds the EDACS Pro­Sound Feature. Pro-Sound provides better end-to-end audio
quality by providing radios with a list of alternative sites
and their corresponding control channels through the use of
“adjacency information”.

The GETC has the following role in supporting the
Pro-Sound Feature:

6 Rev. B

SOFTWARE FEATURES LBI-38988

• Receive Adjacency information from the Site

Controller or Downlink.

• Count the number of actual Adjacent Systems

listed in the Adjacency Message.

• Build an Adjacencies Table Length Definition

Message and send it.

• If a Priority System is defined, build a Priority

System Definition Message and send it.

• For each Adjacent System, build an Adjacent

System Definition Message and send it.

• The Control Channel expects an Adjacency Data

update from the IMC every 25 seconds or sooner.

• The Control Channel will stop sending Adjacency

Data if the Link to the IMC breaks, or if it waits
longer than 30 seconds for an adjacency
information update from the IMC.

• If the Link to the IMC breaks, after it recovers, the

CC will wait for a fresh set of Adjacency Data
before it will begin sending over-the-air (RF)
Adjacency Data.

Radio users must ensure the radio’s personality has
“Pro-Sound” enabled and the radio feature encryption
option “wide area scan” or “priority scan” is active.

1. A particular site color is programmed in the
Control Channel GETC.

2. The outbound Control Channel messaging tells the
radio which “color” to use on inbound
transmissions.

3. Inbound transmissions from the radio to the
Control and Working Channel are coded with
correct color.

Users must have radio’s software upgraded to support

this feature.

Configuration Considerations

• The Enhanced Multi-Site Login feature does not

require any hardware changes. However, it does
require special configuration of the GETC
software.

• To enable Enhanced Multi-Site Login, the “Site

Color” parameter needs to be programmed into the
GETC Personality. This feature is a Personality
Extended Site Option loaded into the PC
Programmer software via the Field Macro file
“gtc_9505.mac.” Refer to the Personality
Programming section in this manual for additional
information on Field Macro installation into the
PC Programmer, TQ-3357.

Configuration Considerations

Pro-Sound does not require any hardware changes or
special software configuration. The feature is activated
from the MOM PC, which is connected to the IMC.

Enhanced Multi-Site Login

The Enhanced Multi-Site Login feature provides a
method to enhance signaling integrity, on both the inbound
Control Channel and Working Channel, in an environment
where a distant site is operating with the same frequency
set or where intermodulation interference is a
consideration.

Enhanced Multi-Site Login is achieved by means of a
digital “color code” on the inbound Control and Working
Channel signaling. The CRC (BCH error correction),
which is appended to the end of each message, is coded (by
the radio) and decoded (by the GETC) in a unique way as
determined by the color specified in the GETC personality.
This allows the specified site (i.e. having the correct site
color) to acknowledge the receiving a radio transmission in
an area where many sites may also receive the
transmission. This is implemented as follows:

NOTE

NOTE

Only PC Programmer TQ-3357 V4.03 (or later)
can be upgraded through the use of Field Macros.
Current Field Macros may be downloaded from
the accompanying Station Turbo Software
distribution disk or from Ericsson’s “One1Call”
Electronic Information Retrieval system.

Voted Digital Interconnect

The Voted Digital Interconnect (VDI) feature allows
Voted and Simulcast sites to have access to the digital
Central Interconnect system, Jessica.

For a Voted (Non-Simulcast) system, an additional
GETC per channel is required, making the configuration
more like that of a Simulcast system. All GETCs attached
to RF receivers will operate as Satellite Receivers, and the
added Control GETC will take on transmit responsibilities
similar to those of the Simulcast Control Point GETC. The
main purpose of the additional GETC is to provide a
synchronous data input port which can be connected to the
output of the voter. This provides the Control GETC the

Rev. B 7

LBI-38988 SOFTWARE FEATURES

capability of listening to both the IMC and the Voter
simultaneously.

For a Simulcast system, no additional equipment is
required once the system is equipped for Digital Dispatch.
A wiring modification is made to the digital path between
the Voter Selector and the Control Point GETC to provide a
continuous data path between them. The modification
gives the Control Point GETC the capability of listening to
both IMC and the Voter Simultaneously.

Configuration Considerations:

• Configuration of the GETC Personality requires

using PC Programmer V4.03 and Field Macro
“gtc_9505.mac” or V5.0.

Refer to LBI-39187 for complete details on configuring
GETCs for VDI systems. Additional information on Voted
Digital Interconnect is also available in the Voter and
Simulcast Control Point Maintenance Manuals, LBI-39149
and 39186.

DIP Switch Changes

The functionality of the DIP switches S1, S2, S3 have
been dramatically reduced. Many of these controls now
reside within the GETC personality and may be modified
using GETC PC programmer TQ-3357.

The following controls have been altered:

• Simulcast operation moved to personality space.

• Conventional Failsoft enable moved to personality

space.

In earlier software versions, the operating frequency
for MII/IIe systems was set into the DIP switches. With the
introduction of 349A9607G5 the MII/IIe and MIII systems
frequency is programmed in personality. MII/IIe use this
information for frequency synthesizer loading and
Narrowband systems extract even/odd information. The PC
programmer V4.03 does not accept UHF frequencies and,
as a result, UHF systems must have a fixed offset of 500
MHz added since only the even or odd frequency
information is needed.

349A9607G4 SOFTWARE

With the release of 349A9607G4 software, both
Wideband 9600 baud functionality and Narrow Band 4800
baud functionality were merged together. This release also
included three new features:

• Failsoft Patch

• Wideband Power Monitoring

• Channel Activity Logging

In addition, this software release was designed in
conjunction with the GETC PC Programmer TQ-3357
V4.03 (344A3466G5).

Multisite Digital Voice or Digital Data

Digital Voice or Digital Data applications require
installation of a Rockwell Modem. This allows the GETC
to send and receive Digital Voice or Digital Data
information, encoded as 9600 baud modem data, to the
CEC/IMC using the four-wire audio line.

• Frequency selection moved to personality space.

• Personality programming through J104 only (J100

no longer used for programming).

8 Rev. B

Additionally, the personality option for Wide Area
Digital Voice must be ENABLED for proper operation.
This can only be done using the PC Programmer V4.03 (or
later).

RELATED PUBLICATIONS LBI-38988

GETC LOGIC BOARD

EPROM, U2

349A9607G5

349A9607G4

349A9607G2

349A9607G1 (800 MHz

only)

19A705595G8 (900 MHz

only)

344A3835G2 (SCAT only)

RELATED PUBLICATIONS

It may be necessary to consult one or more of the
following documents during the installation process. These
manuals will also provide additional guidance if you
encounter technical difficulties during the configuration
process.

LBI-38430 - MASTR IIe Control Shelf Maintenance

Manual.

LBI-38636 - MASTR III Base Station Installation

Manual.

LBI-38822 - Turbo Board (GETC-1e) Maintenance

Manual.
LBI-38894 - GETC Trunking Card Maintenance Manual.
LBI-38896 - EDACS Site Downlink and CEC/IMC

Uplink Configuration Manual.
LBI-38985 - EDACS Site Controller Maintenance

Manual.
LBI-38987 - EDACS SCAT & SCAT Downlink

Configuration Manual.
LBI-39149 - EDACS Compact Vertical Voter

Maintenance Manual.
LBI-39186 - EDACS Simulcast Control Point

Maintenance Manual.
LBI-39187 - EDACS Voted Digital Interconnect

Configuration Manual.
SRN-1010 - Software Release Notes for GETC Turbo

Board Software, 344A4414G1 only.
SRN-1024 - Software Release Notes for GETC 900 MHz

Software, 19A705595G8.
SRN-1060 - Software Release Notes for GETC-1e

Software, 349A9607G1 (or later).
SRN-1062 - Software Release Notes for Turbo Board

with GETC-1e Software, 344A4414G2 (or

later).
TQ-3357 - GETC Shelf Programming Manual

Table 1 - GETC EPROM and Turbo Software

Compatibility

TURBO BOARD

SOFTWARE
344A4414G5
344A4414G4 (or later)
344A4414G3 (or later)
344A4414G2 (or later)

344A4414G1

344A4414G2

CAUTION

CAUTION

To ensure system compatibility, all repeaters and
Satellite Receivers should have the same firmware
versions installed. Also, for proper Voted or
Simulcast operation, Test Unit Software
19A705272 Group 6 is required. Failure to
observe these precautions could result in less than
acceptable system operation.

NOTE

NOTE

Software used in the GETC is subject to changes
resulting from improvements or enhancements.
Refer to release notes SRN1060, SRN1061 and
SRN1062 for compatibility of GETC1e with other
EDACS platforms. Software Release Notes take
precedence over this manual.

EDACS COMPONENT SOFTWARE
COMPATIBILITY

SOFTWARE COMPATIBILITY

GETC EPROM and TURBO BOARD
SOFTWARE COMPATIBILITY

The following software is required for GETCs used in

the Station configurations:

Rev. B 9

The data presented in Table 2 represents the minimum
EDACS component software versions required to support
the features indicated.

NOTE

NOTE

If a system has Group 5 Link software and Group

11 IMC software, then the Site Controller must

use Group 6 (or later) software.

LBI-38988 SOFTWARE COMPATIBILITY

RADIO COMPATIBILITY

Table 3 describes the minimum software requirements
for radio products supporting the features included in this
release.

Table 2 - EDACS Component Software Compatibility

EDACS COMPONENT Required for

SCAT Data

C3 MAESTRO N/A 344A3922G4 344A3922G4 344A3922G4 344A3922G4
IMC U58

U59
U3
MOM

Site Controller N/A 344A3265G3 344A3265G6 344A3265G6 344A3265G2
VAX System Manager

PDP System Manager
Link GETC

Link Turbo
PC Programmer TQ-3357 Ver 4.03 Ver 4.03

Voter / Simulcast N/A 19A149567G12 19A149567G12 19A149567G13 19A149567G12
Jessica PI N/A N/A N/A 349A9982G3 349A9982G3
EDG Application

147 ROMs
VC24 ROMs

344A3567G11
344A3568G11
344A3565G11
344A3630G11

344A4583G2
19A149495G8

344A4895G5
350A1121G5

350A1069G1
350A1101G1
350A1072G1

Required for

Enhanced

Multisite Login

344A3567G8
344A3568G8
344A3565G7
344A3630G4

344A4583G2
19A149495G8

N/A 344A4895G5

(gtc_9505.mac)

N/A N/A N/A N/A

Required for

ProSound

344A3567G11
344A3568G11
344A3565G11
344A3630G11

344A4583G2
19A149495G8

350A1121G5
Ver 4.03 Ver 4.03 Ver 4.03

Required for

Voted Digital

Interconnect

344A3567G11
344A3568G11
344A3565G11
344A3630G11

344A4583G2
19A149495G8

344A4895G5
350A1121G5

Required for

Failsoft Patch

Operation

344A3567G11
344A3568G11
344A3565G11
344A3630G11

344A4583G2
19A149495G8

344A4895G4
350A1121G4

Table 3 - Radio Compatibility

FEATURE MPA MDX MDR MRK ORION Alpha

FMD

ProSound G15 G9 G8 G22 G22 N/A

Enhanced Multisite Login G16 G10 N/A G22 G22 G2

Modified Data Protocol N/A G10 N/A G19 G19 G2

SCAT G8 G1 G1 G19 G19 G1

SCAT Data N/A G10 N/A G22 G22 G2

Interconnect G10 G1 G1 G1 G1 G1

Digital Interconnect G12 G1 N/A G5 G1 G1

10 Rev. B

HARDWARE COMPATIBILITY LBI-38988

Trunked Site #1 of N

Tx Rx

4-Wire Audio Circuits

Figure 1 - Typical EDACS Site Block Diagram

HARDWARE COMPATIBILITY

The GETC hardware compatibility depends on the
version of EPROM installed on the Logic Board, refer to
the following table:

Table 4 - GETC Hardware Compatibility

GETC LOGIC

BOARD

EPROM, U2

349A9607G5 19D904266G4

349A9607G4 19D904266G4

349A9607G3 19D904266G1 19D903536P1
349A9607G2

(or earlier)
19A705595G8 19D904266G1 19D903536P1

LOGIC BOARD TURBO BOARD

19D903536P1

19D904266G1

19D903536P1

19D904266G1

19D904266G1 19D903536P1

NOTE

NOTE

GETCs using EPROM 349A9607G4 or later must
use Logic Board 19D904266G4 or upgrade the
Logic Board 19D904266G1 with the Speedup
(80C320) microprocessor and Amps Modem
chips, U4 and U19 (19A704727P4). (Refer to
Upgrading Hardware in the Hardware Installation
section of this manual.)

GETCs using EPROM 349A9607G4 or later must
also have the FerriShield Toroid (REG70469/1)
installed around the Turbo Board’s harness for
EMI suppression, refer to LBI-28822 for details.

Site Controller

Computer

Backup Serial Link

J100 J102

Primary

Downlink

Rx TB10 Tx

12 11 10 9

J100 J102

Backup

Downlink

Rx TB10 Tx

12 11 10 9

9600 baud Modem Data

To MSC

Failsoft

J102 J100

GETC #1

Repeater #1

Audio

Tx Rx

Audio Path
Digital Data Path

J102 J100

GETC #2

Repeater #2

Audio

3 4 2 5

. . .

To MSC

J102 J100

GETC #N

Repeater #N

Audio

Tx Rx

3 4 2 5 3 4 2 5

Rev. B 11

LBI-38988 DESCRIPTION

DESCRIPTION

The Station GETC is the foundation of all EDACS

trunking operations. It is capable of operating in the
Trunked Failsoft mode or as part of a fully trunked system
or network. In the Trunked Failsoft mode, one of the
Station GETCs operates as the Control Channel GETC,
providing the command and control link between the
mobile radios and the EDACS system. The remaining
station GETCs operate as Working Channel GETCs and
enable or disable selected repeater channels for the actual
voice or digital data communication. Each Station GETC
has the ability to operate as a Control Channel if the
operation of the current Control Channel GETC is
interrupted.

In a Fully Trunked EDACS network or system (Figure

1), the Station GETCs function as either Control Channel
or Working Channel GETCs. In this environment, the Site
Controller Computer directs all communications, and
designates the Control Channel and Working Channel
GETC's. This allows EDACS to provide advanced features
such as Dynamic Transmission/Message Trunking, Local
Telephone Interconnect, Activity Logs, and Management
functions.

However, should the Site Controller fail, the EDACS
system defaults to the Trunked Failsoft mode. In this
mode, one of the GETCs assumes the role of Control
Channel GETC and directs Working Channel assignments
using the Backup Serial Link (BSL). Should the Control
Channel GETC fail, one of the other Working Channel
GETCs assumes the Control Channel function. The end
result is reliable, high performance trunked
communication.

The Downlink GETC provides the communication
path between the site and the Integrated Multisite and
Console Controller (IMC) or the Console Electronics
Controller (CEC) via the Uplink or Link GETC. Refer to
LBI-38896 when configuring Downlink and Uplink
GETCs.

OPERATION

The Station GETC communicates with the Site
Controller through an RS-232C port (J100), see the
Interconnect Diagrams, operating at 19.2K baud.
Additional communications parameters are one start bit,
eight data bits, and one stop bit.

The designated Control Channel GETC communicates
with the Working Channel GETC's using a Sync line that
indicates outbound Control Channel data and inbound
mobile data. The Sync line is connected in a bus fashion to
each Station GETC.

CONTROL CHANNEL

The Control Channel GETC provides continuous
outbound Control Channel data. The data stream consists
of message frames containing information such as Channel
Assignments. The Channel Assignment message includes
the originating mobile's LID, communication type,
Trunking mode, communications channel, and the group or
individual involved in the call.

The mobile radios synchronize their transmissions on
the Control Channel to reduce Control Channel collisions.
The designated Control Channel GETC processes the
inbound data prior to passing the data along to the Site
Controller. When operating in the Failsoft mode, the
Control Channel GETC also produces the required Channel
Assignments.

Control Channel Jamming

Whenever an invalid signal is present on the inbound
Control Channel for longer than six seconds, the Control
Channel GETC generates a jamming alarm . The Station
sends the alarm to the Site Controller which can initiate
corrective action such as re-assigning the Control Channel
to a different operating frequency.

WORKING CHANNEL

Sub audible signaling or Low Speed Data (LSD) is
present on the Working Channel along with the primary
voice communication. The LSD indicates group call
activity on other channels and also indicates a channel drop
when appropriate.

The Working Channel operates in either the
Transmission Trunked mode or Message Trunked mode.
Transmission Trunking allows for an instantaneous
channel drop upon receipt of an "unkey" message from the
mobile radio. This is the most efficient use of channel
resources.

Message Trunking provides hang time following the
channel drop message. This mode is used when it is
important to provide uninterrupted communication. When
using Message Trunking, the user(s) occupy the same
Working Channel until the message trunk timer expires.

TRUNKED FAILSOFT OPERATION

The Trunked Failsoft operating mode provides basic
trunked communications. The designated Control Channel
GETC makes all channel assignments and transmits the
assignments over the BSL (J102-3) to each of the Working
Channel GETCs. The Failsoft operating mode is entered

12 Rev. B

whenever the communications between the Site Controller

TX MOD (J7-4)
Direct modulation input to the

synthesizer-exciter (MIIe

only).

GETC DATA (J7-5)
Input to the transmitter for

filtered High Speed Data

(HSD) to be transmitted.

VOL\SQ HI (J7-2)
Unfiltered receiver audio (9600

or 4800 baud data, voice, or

Low Speed Data (LSD).

LSD TX (J19-5)
Low-Speed Data to be

transmitted.

1950 DIS (J6-5)
Keeps line output active during

absence of a clear voice,

working channel call (EDACS

Voting System).

TX DATA LINK
Serial link, transmit output, to

the Site Controller.

RX DATA LINK
Serial link, received input from

the Site Controller.

BSL
Backup Serial Link between

Failsoft GETC's.

SYNC
Frame Sync Line (FSL)

provides GETC

synchronization in trunked

stations.

and the Control Channel GETC is lost.

STATION CONTROL

The Station GETC controls the Repeater Station's

radio through the following interface and control lines:

DELAY PTT (J6-1) Station executes an EXTernal

PTT sequence to key the
station transmitter.

REM PTT OUT (J6-16) Station executes a REMote

PTT, used to control audio
routing from the remote line
input to the transmitter.

RUS OUT (J7-15) Controls receiver (Vol/Sq)

audio sent to the transmitter.

LBI-38988

DET DIS (J6-10) Detect Disable signal disables

LSD while sending HSD to the
transmitter.

PA FAIL (J7-13) RF power amplifier failure

sensing line.

SYNTH LOCK DET
(J6-13)

SYNTH CLK (J6-12) Synthesizer-exciter clock line

SYNTH DATA (J6-11) Synthesizer-exciter data line

SYNTH LD EN (J6-15) Synthesizer-exciter load enable

Synthesizer-exciter lock detect
indicator.

(MIIe - 800/900 MHz
applications only).

(MIIe - 800/900 MHz
applications only).

pulse line (MIIe - 800/900
MHz applications only).

For a complete description of the interface signals, and
their activity during the various operating modes, refer to
Table 15 .

The GETC uses the following lines to communicate
with other GETCs and with the Site Controller:

Rev. B 13

LBI-38988 CONFIGURATION

CONFIGURATION

The configuration process involves the following

procedures and should be completed in the order presented:

1. Hardware Installation - The Hardware Installation
procedure verifies proper installation of GETC
hardware.

2. GETC Software Installation - The GETC Software
Installation procedure provides instructions for
installing the GETC operating software,
349A9607.

3. Turbo Board Software Installation - This
procedure provides instructions for installing the
Turbo Board software, 344A1441.

4. Personality Programming - This procedure
provides instructions for programming and storing
system configuration data in the GETC.

5. Operational Checkout - The Operational Checkout
procedure provides instructions for verifying the
GETC operation when the configuration is
complete.

HARDWARE INSTALLATION

Typically, a Station GETC is installed in a n EDACS
station cabinet just above each of the station's radio
assemblies as shown in Figure 2. The assembly is mounted
within a slide out shelf measuring 1.75 inches (one rack
unit) high by 19 inches wide.

Installation or removal of the shelf sub-assemblies
involves sliding the GETC shelf out of the cabinet and into
the service position. This position allows access to the
shelf's sub-assemblies. Install all components with the
appropriate screws, nuts, and washer hardware. Refer to
the MASTR IIe (LBI-38430) or MASTR III (LBI-38636)
Application Assembly Diagrams for detailed information
on installing the GETC Shelf.

Observe basic safety precautions to prevent injury or
equipment damage.

Upgrading Hardware

GETC Shelves 19D901868G3 which are upgrading to
the 349A9607G4 or G5 software must ensure their
hardware is upgraded to the proper level. (The
19D901868G4 GETC Shelf meets all Group 5
requirements.)

Upgrading the hardware involves three elements:

• The microprocessor U1, 19A705557P1 (80C32), is

replaced with a faster “Speedy” microprocessor
RYT 121 6060/A (80C320).

• Replacing the AMPS modem chips U4 and U19

with the TI AMPS modem chips 19A704727P4.

• Installing a Ferrite Toroid on the Turbo Board

harness to suppress EMI spurs at 74 MHz.

The replacement microprocessor and Ferrite Toroid are
available in the field installable upgrade kit SPK9505. If
replacement of the modem chips is necessary, they must be
ordered separately. Refer to LBI-38894 and LBI-38822 for
complete installation instructions.

DISTRIBUTION

PANEL

SPACE

STATION GETC

REPEATER

CHANNEL #2

POWER SUPPLY

SPACE

STATION GETC

REPEATER

CHANNEL #1

DISTRIBUTION

PANEL

SPACE

STATION GETC

REPEATER

CHANNEL #4

POWER SUPPLY

SPACE

STATION GETC

REPEATER

CHANNEL #3

DISTRIBUTION

PANEL

SPACE

STATION GETC

REPEATER

CHANNEL #5

GETC Logic Board Installation

This manual assumes the GETC Logic Board
(19D904266G1 or G4) is previously installed, setup for the
default configuration (Wideband EDACS Station), and
fully operational. If you suspect that the GETC Logic
board is not operating properly, refer to the
Troubleshooting section in this manual.

Turbo Board Installation

This manual assumes the Turbo Board is previously

POWER SUPPLY

POWER SUPPLYPOWER SUPPLY

installed and fully functional. If, after installing or
attempting to install the Turbo Software, the Turbo Board
is not functioning properly, refer to the Troubleshooting

REPEATER

CABINET

REPEATER

CABINET

REPEATER

CABINET

section. Additional maintenance information is also
available in LBI-38822, SRN1060 and SRN1062.

Figure 2 - Typical Five Channel Repeater

Cabinet

14 Rev. B

CONFIGURATION LBI-38988

Receiving Half of

Telephone Line

J6-07

J6-06

68

T1

52

12

J67

R36

604

D11 D10

R1
5K

TP107

Demodulated

Rx Data

U18A

4558

Level

3

2

Rx

Figure 3 - GETC Phone Line Level Adjustments

Parallel

Data Bus

4
5
6
7
8

9
10
11

19 21

2

1

D0
D1
D2
D3
D4
D5
D6
D7

Serial Data

Rx Tx

J11

J3C-22

J3A-32

1

Telephone Line

Level Adjustments

U19

Rockwell

Modem

19A705178

Unmodulated

J3C-24

J3A-31

R2

Level

1K

R38

220

TP105

Tx Data

Tx

U18B

4558
5
6

Transmitting Half of

Telephone Line

J6-09 J6-08

68

T2

52

R146

604

D13 D12

7

Rockwell Modem Installation

The Rockwell Modem provides a high speed
synchronous serial interface between the Station GETC and
the CEC/IMC's Uplink GETC. The Station GETC uses the
modem to send and receive serial digital data representing
GID information, polling messages, keying messages, and
channel assignments. Data transfer rates are 9600 bits per
second (bps) using dedicated 3002 data grade four-wire
audio lines. Technical specifications for the modem may be
found in LBI-33031. Information on installing and testing
the modem may be found in LBI-38894, and LBI-38822.

Modem Alignment

Use the following steps to set up the basic audio line
levels. If the Station GETC is linked to a MultiSite system
other than the CEC/IMC (i.e. Data Gateway), different
levels may be required. Consult the applicable system
installation manual for the required levels.

1. Ensure jumpers are installed on J11 pins 1 & 2
and J12 pins 1 & 2.

2. Apply power to the GETC.

3. Adjust the receive level by monitoring U18 pin 1
(refer to Figures 3 and 4) and adjusting the receive
level potentiometer R1 (located on the GETC
Logic Board) for 400 mVpp as measured with a n

oscilloscope (85 mVrms if using an RMS
Voltmeter).

4. Verify the presence of demodulated signal data at
TP107.

5. Adjust the transmit level potentiometer R2 for the
maximum output level allowed by the phone line,
microwave link, or equivalent communication
line. For telephone lines linking the Station
GETC to the CEC/IMC Uplink GETC, adjust R2
for .77 Vrms (0 dBm) measured across J6-8 and
J6-9 (TB10-1 and 2). For microwave links, adjust
R2 for -10 dBm across J6-8 and J6-9.

6. Initialize the modem by pressing S4 (on the GETC
Logic Board) to reset the Station GETC or cycle
the GETC Shelf's operating power.

Jumper Installation

There are a few jumpers on the GETC Logic Board
which must be re-configured for different applications. To
properly configure the GETC jumpers, refer to jumper
tables in SRN1060 and install or remove jumpers according
the intended GETC application. The location of the
jumpers may be found using the board layout diagram in
Figure 4.

Rev. B 15

LBI-38988 CONFIGURATION

U18

J47

R1

Receive Level Adjustment

T1 T2

1

J7

J9 J8 J6 J19

J14

J15

1

1

1

J28

1

1

J20

J48

TP104

1

TP114

R141

J13

1

J50

J21

J26

J18

J53

1

1

1

1

U18

R1

J74

J51

1

1

J46

1

1

1

J69

J73

J71

1

J44

J17

TP104

1

1

J25

1

TP114

J16

1

J24

1

TP111

J60

1

J65

R31

1

J66

1

J64

R141

1

J63

1

1

J55

1

1

J67

1

J12

1

1

U1

TP111

R31

L7

L6

LED Indicators

L1 L2 L3 L4 L5

U35

J61

J10

J27

TP108

1

J29

U2

J52

1

1

U4

1

S3S2S1

R2

1

J72

TP109

1

1

TP110

U3

1

U19

1

1

S4

Reset Switch

Dip Switches

J62

19D904266

TP108

R2

TX Level Adj

TP110

J49

TP107

TP107

J3

J11

TP109

J68

J54 1

Figure 4 - Station GETC (19D904266) Jumper and Test Point Locations

16 Rev. B

CONFIGURATION LBI-38988

GETC SOFTWARE INSTALLATION

The GETC software installation procedure involves
installing the latest version of the EPROM containing the
GETC operating software.

NOTE

NOTE

Download applicable Field Macros into the PC

Programmer TQ-3357 prior to configuring the

GETC software.

The following procedures provide instructions for
installing the GETC software when the GETC functions in
a Failsoft System, a Fully Trunked System, or a Satellite
Site Receiver or Simulcast Remote Transmitter:

caution

CAUTION

Observe precautions

for handling

ELECTROSTATIC

h

SENSITIVE DEVICES

Trunked Failsoft System

Perform the following steps when installing the
software in a GETC connected in a Trunked Failsoft
system.

NOTE

NOTE

Upgrading to Group 4 or Group 5 software is

backward compatible in functionality with

349A9607G1 & G2 and 19A149256G18 thru G21

software in the Failsoft operation. However, the

GETC hardware must be upgraded to include the

Turbo Board with 344A4414G4 or Group 5

software, respectively, and Ferrite Toroid. The

Logic board must be upgraded with the 80C320

microprocessor (U1), and 19A704727P4 Modem

(U4 & U19), refer to the Upgrading Hardware

section for details.

1. Power down the channel and place the GETC into
the service position. Refer to LBI-38894 if
necessary.

2. If upgrading from 19A149256G21 (or earlier)
software, remove RAM chip U3 and install Turbo
Board. Refer to LBI-38822 for instructions.

3. Ensure Modem chips U4 and U19 are TI AMPS
modems 19A704272P4. TI Amps modems are
required when upgrading to 349A9607G4 (or
later), replace if necessary.

4. Ensure microprocessor U1 is the “Speedy”
microprocessor 80C320 (RYT 121 6060/A). This
processor is required when upgrading the software
to 349A9607G4 (or later). The processor is
available in the Speedy Upgrade Kit SPK9505.
Replace if necessary. Refer to LBI-38894 for
installation instructions.

5. Ensure Turbo Board harness has Ferrite Toroid
installed. Toroid is included in the SPK9505
Speedy Upgrade Kit. Replace if necessary. Refer
to LBI-38822 for installation instructions.

6. Remove the old EPROM (U2) from the GETC
Logic Board.

7. Install the new EPROM into the XU2 socket,
being sure to properly orient the chip.

8. Remove EEPROM U35, if necessary, from the
Logic Board. The GETC personality will reside in
the Turbo Board and this device is no longer
required.

9. Power up the channel.

10. Place the Turbo processors U1 and U2 in the
program mode by switching Turbo Board switches
S2 and S3 toward the front of the Turbo Board.

11. Download the Turbo Board Software from the disk
provided in the Turbo Media Kit, 344A4414.
Refer the Turbo Board Software Installation
section, SRN1060, SRN1062, and LBI-38822.

12. After downloading the Turbo Board software,
move switches S2 and S3 toward the back of the
Turbo Board and press the GETC Logic Board
Reset button, S4.

13. The two LEDs on the Turbo Board should light.

14. Program the GETC’s personality using the
Personality Programming procedures contained in

Rev. B 17

LBI-38988 CONFIGURATION

this manual and the detailed instructions contained
in TQ-3357 and SRN1060.

15. Perform an operational checkout using the Failsoft
System checkout procedures.

Fully Trunked Systems

Perform the following steps when installing the
software in a GETC connected i n a fully trunked system.
Following these procedures will allow upgrading the GETC
without interrupting normal communications.

These procedures apply to all fully trunked sites with
PDP System Manager Group 8 (or later), or VAX System
Manager Group 1 (or later).

NOTE

NOTE

If uninterrupted service is not an issue, skip steps

1 and 2.

1. Using the System Manager, place the channel into
Channel Test (formerly 2nd partition). This
allows the GETC to be tested for correct operation
before the channel is placed back into service.

2. Enable the test radios (two required) to operate in
Channel Test. This is done using the System
Manager’s Logical Unit Definition to change the
Logical ID database. Also, enable a test group(s)
for Channel Test by using the System Manager’s
Group Definition to change the Group ID
database. Refer to LBI-38984.

Replace if necessary. Refer to LBI-38894 for
installation instructions.

7. Ensure Turbo Board harness has Ferrite Toroid
installed. Toroid is included in the SPK9505
Speedy Upgrade Kit. Replace if necessary. Refer
to LBI-38822 for installation instructions.

8. Remove the old EPROM (U2) from the GETC
Logic Board.

9. Install the new EPROM into the XU2 socket,
being sure to properly orient the chip.

10. Remove EEPROM U35, if necessary, from the
Logic Board. The GETC personality will reside in
the Turbo Board and this device is no longer
required.

11. Power up the channel.

12. Place the Turbo processors U1 and U2 in the
program mode by switching Turbo Board switches
S2 and S3 toward the front of the Turbo Board.

13. Download the Turbo Board Software from the disk
provided in the Turbo Media Kit, 344A4414.
Refer the Turbo Board Software Installation
section, SRN1060, SRN1062, and LBI-38822.

14. After downloading the Turbo Board software,
move switches S2 and S3 toward the back of the
Turbo Board and press the GETC Logic Board
Reset button, S4.

3. Power down the channel and place the GETC into
the service position. Refer to LBI-38894 if
necessary.

4. If upgrading from 19A149256G21 (or earlier)
software, remove RAM chip U3 and install Turbo
Board. Refer to LBI-38822 for instructions.

5. Ensure Modem chips U4 and U19 are TI AMPS

15. The two LEDs on the Turbo Board should light.

16. Program the GETC’s personality using the
Personality Programming procedures contained in
this manual and the detailed instructions contained
in TQ-3357 and SRN1060.

17. Perform an operational checkout using the Fully
Trunked System checkout procedures.

modems 19A704272P4. TI Amps modems are
required when upgrading to 349A9607G4 (or
later), replace if necessary.

When upgrading from 349A9607G1 (or later)

NOTE

NOTE

software, existing personality data is stored during

6. Ensure microprocessor U1 is the “Speedy”
microprocessor 80C320 (RYT 121 6060/A). This
processor is required when upgrading the software

the installation process. It will only be necessary
to reprogram the personality if new features are
being enabled.

to 349A9607G4 (or later). The processor is
available in the Speedy Upgrade Kit SPK9505.

18 Rev. B