GAI-Tronics IDA1000A User Manual

Pub. 43004-027A

GAI-TRONICS® CORPORATION

A HUBBELL COMPANY

Model IDA1000A DC Remote

Adapter

Installation and Service Manual

GAI-Tronics Corporation 400 E. Wyomissing Ave. Mohnton, PA 19540 USA

610-777-1374  800-492-1212  Fax: [phone]

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ISIT WWW.GAI-TRONICS.COM FOR PRODUCT LITERATURE AND MANUALS

CONFIDENTIALITY NOTICE

This manual is provided solely as an operational, installation, and maintenance guide and contains
sensitive business and technical information that is confidential and proprietary to GAI-Tronics.
GAI-Tronics retains all intellectual property and other rights in or to the information contained herein,
and such information may only be used in connection with the operation of your GAI-Tronics product or
system. This manual may not be disclosed in any form, in whole or in part, directly or indirectly, to any
third party.

COMPUTER SOFTWARE COPYRIGHTS

This product contains copyrighted computer programs stored in semiconductor memory. These programs
are copyrighted by GAI-Tronics Corporation and may not be reproduced in any form without express
written permission from GAI-Tronics.

WARRANTY

GAI-Tronics warrants for a period of one (1) year from the date of shipment, that any GAI-Tronics equipment supplied
hereunder shall be free of defects in material and workmanship, shall comply with the then-current product specifications and
product literature, and if applicable, shall be fit for the purpose specified in the agreed-upon quotation or proposal document. If
(a) Seller’s goods prove to be defective in workmanship and/or material under normal and proper usage, or unfit for the purpose
specified and agreed upon, and (b) Buyer’s claim is made within the warranty period set forth above, Buyer may return such
goods to GAI-Tronics’ nearest depot repair facility, freight prepaid, at which time they will be repaired or replaced, at Seller’s
option, without charge to Buyer. Repair or replacement shall be Buyer’s sole and exclusive remedy, and the warranty period on
any repaired or replacement equipment shall be one (1) year from the date the original equipment was shipped. In no event shall
GAI-Tronics’ warranty obligations with respect to equipment exceed 100% of the total cost of the equipment supplied hereunder.
The applicability of any such third-party warranty will be determined solely by GAI-Tronics.

Services. Any services GAI-Tronics provides hereunder, whether directly or through subcontractors, shall be performed in

accordance with the standard of care with which such services are normally provided in the industry. If the services fail to meet
the applicable industry standard, GAI-Tronics will, for a period of one (1) year from the date of completion, re-perform such
services at no cost to the Buyer. Re-performance of services shall be Buyer’s sole and exclusive remedy, and in no event shall
GAI-Tronics’ warranty obligations with respect to services exceed 100% of the total cost of services provided hereunder.

Limitations/Exclusions. The warranty on any equipment supplied hereunder is subject to Customer’s use in compliance

with applicable FCC regulations and manufacturer specifications. The warranties herein shall not apply to, and GAI-Tronics
shall not be responsible for, any damage to the goods or failure of the services supplied hereunder, to the extent caused by
accident, misuse, abuse, neglect, system design, product modification, failure to follow instructions contained in the product
manual, repair, or attempted repair by anyone not authorized by GAI-Tronics, improper installation, installation of parts that do
not conform to the quality or specifications of the original parts or accessories, damage or loss occurred during shipment, or any
unit which is not new when sold or upon which the serial number has been defaced, modified or removed. The warranty does
not extend to damage incurred by natural causes including Force Majeure. The warranty does not cover microprocessors if

failure is due to static damage or application of improper voltage.

THE WARRANTIES AND REMEDIES CONTAINED

HEREIN ARE IN LIEU OF AND EXCLUDE ALL OTHER WARRANTIES AND REMEDIES, WHETHER
EXPRESS OR IMPLIED BY OPERATION OF LAW OR OTHERWISE, INCLUDING ANY WARRANTIES OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.

Operational and Maintenance Procedures. Buyer acknowledges that any improper use, maintenance, or

modification of the equipment provided hereunder, or use of unqualified maintenance or service technicians will severely impair
the operational effectiveness of the entire communication system. Buyer hereby agrees to indemnify, defend and hold GAI­Tronics harmless from and against any and all third party claims arising, in any manner, out of: (a) Buyer’s neglect of the
equipment; (b) Buyer’s use of technicians not authorized by GAI-Tronics to service the equipment; or (c) Buyer’s improper use
or modification of the equipment or failure to follow the operational and maintenance procedures provided with the equipment.

Limitation of Liability/Damages. In no event (even should circumstances cause the exclusive warranties and remedies

set forth in the Warranty section to fail of their essential purpose) shall either party be liable for any indirect, incidental, special
or consequential damages (including, but not limited to, loss of use, loss of anticipated profits, or damages arising from delay)
whether such claims are alleged to have arisen out of breach of warranty, breach of contract, strict or absolute liability in tort, or
other act, error or omission, or from any other cause whatsoever, or any combination of the foregoing.

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Table of Contents

FOREWORD...............................................................................................................................................................1

COPE OF MANUAL ....................................................................................................................................................1

S

OMENCLATURE........................................................................................................................................................1

N

RDERING REPLACEMENT PARTS ..............................................................................................................................1

O

ERVICE AND REPAIR.................................................................................................................................................1

S

NTERFERENCE WARNING..................................................................................................................................1

FCC I

AFE HANDLING OF CMOS INTEGRATED CIRCUIT DEVICES .....................................................................................2

S

DESCRIPTION ...........................................................................................................................................................3

F

EATURES AND BENEFITS OF THE MODEL IDA1000A DC REMOTE ADAPTER ..........................................................3

HYSICAL DESCRIPTION.............................................................................................................................................3

P

RONT PANEL ............................................................................................................................................................4

F

Programming Switches.........................................................................................................................................4

Front Panel LEDs.................................................................................................................................................4

INE LEVEL ADJUSTMENTS........................................................................................................................................4

L

TX Adjustment.......................................................................................................................................................4

Line DRV Adjustment ...........................................................................................................................................4

BAL Adjustment....................................................................................................................................................4

EAR PANEL ..............................................................................................................................................................5

R

CCESSORIES.............................................................................................................................................................5

A

ERFORMANCE SPECIFICATIONS ................................................................................................................................6

P

OPERATION...............................................................................................................................................................7

O

PERATIONAL DESCRIPTION......................................................................................................................................7

RONT PANEL LED OPERATION ................................................................................................................................8

F

PWR LED..............................................................................................................................................................8

PTT LED...............................................................................................................................................................8

MON LED.............................................................................................................................................................8

F2 LED .................................................................................................................................................................8

F1 LED .................................................................................................................................................................8

INSTALLATION ........................................................................................................................................................9

LANNING THE INSTALLATION...................................................................................................................................9

P

ECHANICAL RECEIPT INSPECTION ...........................................................................................................................9

M

OUNTING.................................................................................................................................................................9

M

NTERFERENCE WARNINGS................................................................................................................................9

FCC I

QUIPMENT REQUIRED...............................................................................................................................................9

E

ABLE INSTALLATION SAFETY CONSIDERATIONS....................................................................................................10

C

ELEPHONE LINE LIGHTNING AND OVER-VOLTAGE PROTECTION............................................................................10

T

OWER CONNECTIONS .............................................................................................................................................10

P

Power Connections Pin-out................................................................................................................................10

ADIO CONNECTIONS ..............................................................................................................................................11

R

Receive Audio – P1-11, Audio Ground; P1-3, to de-emphasized RX audio source...........................................11

Mic High and Mic Low – P1-12, Hi; P1-4, Low ................................................................................................11

Duplex Control – P1-2........................................................................................................................................11

F1 – P1-8............................................................................................................................................................11

PTT Output – P1-13 Active High; P1-6 Active Low...........................................................................................11

Monitor – P1-14 Active High; P1-7 Active Low.................................................................................................11

F2- P1-15............................................................................................................................................................11

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Table of Contents Model IDA1000A DC Remote Adapter

ACCESSORY CONNECTIONS......................................................................................................................................12

INE CONNECTIONS .................................................................................................................................................12

L

Radio and Accessory Connection Chart.............................................................................................................13

WITCH POSITIONS.........................................................................................................................................14

SW1 S

SW1 Switch Settings Table..................................................................................................................................14

UMPER POSITIONS...................................................................................................................................................15

J

Jumper Position Table........................................................................................................................................15

INE INPUT GAIN SELECT SWITCHES .......................................................................................................................15

L

EVEL SETTINGS AND ADJUSTMENTS ......................................................................................................................16

L

Line Drive Level .................................................................................................................................................16

Transmit Level....................................................................................................................................................16

DC Threshold Calibration..................................................................................................................................16

Balance Adjustment............................................................................................................................................16

THEORY OF OPERATION....................................................................................................................................17

OWER SUPPLY ........................................................................................................................................................17

P

ONTROL CURRENT DETECTION .......................................................................................................................17

DC C

UDIO CIRCUIT........................................................................................................................................................18

A

TROUBLESHOOTING............................................................................................................................................19

T

ROUBLESHOOTING THE MODEL IDA1000A DC REMOTE ADAPTER......................................................................19

USE REPLACEMENT ................................................................................................................................................20

F

MAIN CIRCUIT BOARD........................................................................................................................................21

SCHEMATICS..........................................................................................................................................................25

DEFINITIONS AND ACRONYMS.........................................................................................................................31

01/05 Publication 43004-027A iii

Foreword

Scope of Manual

This manual offers descriptive data and service information for Model IDA1000A DC Remote Adapter
Service diagrams and printed circuit board details are a part of this service manual.

Nomenclature

The model number, located on the nameplate on the bottom, specifically identifies GAI-Tronics
equipment. If additional options are ordered, the option will be identified on the circuit board.

Ordering Replacement Parts

When ordering replacement parts or requesting equipment information, please include the complete
identification number. This applies to all components, kits, and chassis. If the component part number is
not known, the order should include the number of the chassis or kit of which it is a part and sufficient
description of the desired component to identify it. Order parts from:

Customer Service

GAI-Tronics Corporation
400 E. Wyomissing Ave.
Mohnton, PA 19540
US: 800-492-1212
Outside US: 610-777-1374

Service and Repair

Inoperative or malfunctioning equipment should be returned to the factory for repair. Please call
1-800-492-1212 to obtain a Return Authorization number, published repair prices, and shipping
instructions.

OTE: A purchase order or credit card number is required prior to processing non-warranty repairs.

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FCC Interference Warning

The FCC requires that manuals pertaining to Class A and Class B computing devices must contain
warnings about possible interference with local residential radio and TV reception. This warning reads as
follows:

OTE: This equipment has been tested and found to comply with the limits for a Class A digital device,

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pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against
harmful interference when the equipment is operated in a commercial environment. This equipment
generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with
the instruction manual, may cause harmful interference to radio communications. Operation of this
equipment in a residential area is likely to cause harmful interference in which case the user will be
required to correct the interference at his own expense.

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Foreword Model IDA1000A DC Remote Adapter

Safe Handling of CMOS Integrated Circuit Devices

Many of the integrated circuit devices used in communications equipment are of the Complementary
Metal Oxide Semiconductor (CMOS) type. Because of their high open circuit impedance, CMOS
integrated circuits are vulnerable to damage from static charges. Care must be taken handling, shipping,
and servicing them and the assemblies in which they are used.

Even though protection devices are provided in CMOS integrated circuit inputs, the protection is effective
only against overvoltage in the hundreds of volts range such as is encountered in an operating system. In
a system, circuit elements distribute static charges and load the CMOS circuits, decreasing the chance of
damage. However, CMOS circuits can be damaged by improper handling of the modules, even in a
system.

To avoid damage to circuits, observe the following handling, shipping, and servicing precautions:

1. Prior to and while servicing a circuit module, particularly after moving within the service area,

momentarily touch both hands to a bare metal, earth-grounded surface. This will discharge any static
charge that may have accumulated on the person doing the servicing.

OTE: Wearing a conductive wrist strap will minimize static build-up during servicing.

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2. Whenever possible, avoid touching any electrically conductive parts of the circuit module with your

hands.

3. Power down the unit before installing or removing the circuit module.

4. When servicing a circuit module, avoid carpeted areas, dry environments, and certain types of

clothing (silk, nylon, etc.) because they contribute to static build-up. Similarly, disconnect the test
probe prior to removing the ground lead.

5. All electrically powered test equipment should be grounded. Apply the ground lead from the test

equipment to the circuit module before connecting the test probe.

6. If a circuit module is removed from the system, it is desirable to lay it on a conductive surface (such

as a sheet of aluminum foil) which is connected to ground through 100K of resistance.

7. When soldering, be sure the soldering iron is grounded and has a grounded tip.

8. Prior to connecting jumpers, replacing circuit components, or touching CMOS pins (if this becomes

necessary in the replacement of an integrated circuit device), be sure to discharge any static build-up
as described in procedure 1. Since voltage differences can exist across the human body, it is
recommended that only one hand be used if it is necessary to touch pins on the CMOS device and
associated board wiring.

9. When replacing a CMOS integrated circuit device, leave the device in its conductive rail container or

conductive foam until it is to be inserted into the printed circuit module.

10. All low impedance test equipment (such as pulse generators, etc.) should be connected to CMOS

device inputs after power is applied to the CMOS circuitry. Similarly, such low impedance
equipment should be disconnected before power is turned off.

11. Replacement modules shipped separately from the factory will be packaged in a conductive material.

Any modules being transported from one area to another should be wrapped in a similar material
(aluminum foil may be used). Never use non-conductive material for packaging these modules.

01/05 2

Description

Features and Benefits of the Model IDA1000A DC Remote Adapter

Feature Benefit

Multiple dc remote support System flexibility and productivity are enhanced when several desk

sets are connected.

Two-channel control Model IDA1000A can be used to change channels and other

functions on certain radios.
Monitor Allows user to hear co-channel activity; CTCSS/CDCSS is disabled.
Full-duplex capable When used with a 2/4-wire capable desk set, provides full-duplex

operation for use with most full-duplex and trunking radio systems.
Adjustable receive input

sensitivity and transmit output
level

Selectable input/output logic
control

Accessory port Easily connects other devices such as a local desk set and telephone

Modular phone line connection on
back

AC or dc capable Uses power from radio or ac source (using optional wall transformer

Interfaces to most radio systems and line conditions.

The Model IDA1000A is flexible for many radio systems. Outputs

can be individually selected to go active high or to ground,

depending on the radio.

interconnect.

Provides easy-to-install phone line cable connection.

Part. No. 3308-00750-00).

Physical Description

The Model IDA1000A adapts remote desk set or console dc control to most radio systems with features
that exploit maximum functionality.

Adjustable input and output functions such as line input, transmit output level and selectable input/output
logic control provide flexibility. Easy connections and support of multiple desk sets make this dc adapter
the ideal choice for simple or complex desk set arrangements. One dc remote adapter can interface
several dc remote desk sets to the base station, depending on system design.

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Description Model IDA 1000A DC Remote Adapter

Front Panel

Figure 1. Front View of the Model IDA1000A DC Remote Adapter

Programming Switches

The programming switches (SW1) are used to set up and interface with the radio system. They are
numbered from left to right when viewed from the front.

Front Panel LEDs

The PWR LED indicates the remote adapter is on. The PTT LED illuminates when a valid transmit
request has been decoded. The
IDA1000A is in monitor mode. The

MON (timed or constant monitor) LED illuminates when the Model

F1 and F2 LEDs indicate current frequency and/or other functions.

Line Level Adjustments

TX Adjustment

The TX adjustment pot sets the level of the transmit audio to that required to properly modulate the base
station’s transmitter.

Line DRV Adjustment

The LINE DRV adjustment is used to set the telephone (audio) line level or “drive” to the remote desk set
or console.

BAL Adjustment

The balance potentiometer (BAL) allows optimizing the hybrid RX to TX isolation of the internal hybrid
in the 2-wire mode.

01/05 4

Model IDA 1000A DC Remote Adapter Description

Rear Panel

Figure 2. Rear View of the Model IDA1000A DC Remote Adapter

Accessories

Description Part No.

AC Wall Transformer 3308-00750-00
Rack-Mount Kit (Standard 19-inch W × 1.75-inch H)
4-Wire Field Install Kit XDA0001A

XAC0005A

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Description Model IDA 1000A DC Remote Adapter

Performance Specifications

Color ......................................................................................................................................................Black

Physical size.............................................................................................................7.02 W × 5.3 L × 1.35 H

Weight.....................................................................................................................................................4 lbs.

Temperature range..................................................................................................................-30º C to 70º C

Humidity.......................................................................................................95% at 50º C (non-condensing)

Power input..........................................................................................10.5 to 16 V dc at 300 mA maximum

Hum and noise ..................................................................................... Less than –45 dB below rated output

Audio distortion................................................................................................................Less than 3% THD

RX input.....................................................................................32 mV ac to 4.5 V ac (nominal 300 mV ac)

TX input.............................................................. 32 mV ac to 800 mV ac in 560 ohms (nominal 80 mV ac)

Line input.........................................................................-25 to 0 dB ALC to reference (nominal –10 dBm)

Line output................................................... -15 to +10 dBm adjustable into 560 ohms (nominal –10 dBm)

Maximum desk sets supported...................................................................10 maximum (per system design)

DC current defaults......................................................................................................................F1: 5.5 mA

F2: 12.5 mA

Monitor: -2.5 mA

01/05 6

Operation

Operational Description

The Model IDA1000A DC Remote Adapter is for use with base stations or repeaters controlled from a
remote desk set or console by dc line currents. One adapter can interface up to ten dc remote desk sets to
the base station or repeater, depending on the system design.

The Model IDA1000A incorporates all necessary circuit interfacing to translate single-frequency
(5.5 mA) transmit and monitor (-2.5 mA) commands into signals to control base station operation. Where
applicable, F2 transmit (12.5 mA) commands are also supported when used with a two-frequency base
station. Frequency outputs are jumper-selectable for open collector, 5 V pull up, or pull down. The
Model IDA1000A can be programmed to revert to F1 or F2 receive after transmit. See the SW1 Switch
Settings Table on page 14.

Monitor operation can be either latching or non-latching. The adapter routes audio signals between the
wire line and base station circuitry. Transmit audio from the wire line is amplified before being input to
the station. Receiver audio from the base station is amplified before being output to the wire line.

The amount of gain set by the adapter will operate full duplex with either 2-wire or 4-wire. The balanced
inputs cancel ac line noise.

Five LED function indicators are included on the front panel. When illuminated, they indicate wire line
push-to-talk command, a monitor command, and presence of 5 V dc power. Two LEDs indicate detection
of line current levels of 5.5 mA (

F1) or 12.5 mA (F2).

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