Clear-Com TW-60 User Manual

TW-60

PUBLIC SAFETY RADIO INTERFACE

INSTRUCTION MANUAL

TW-60 Public Safety Radio Interface Manual

© 2005 Vitec Group Communications
All Rights Reserved

Part Number 810320 Rev. 1

Vitec Group Communications, Inc.
4065 Hollis Street
Emeryville, CA 94608-3505
U.S.A

Clear-Com is a registered trademark of Vitec Group Communications
The Clear-Com Logo is a registered trademark of Vitec Group Communications

Eclipse is a registered trademark of Vitec Group Communications
Windows is a registered trademark of Microsoft Corp.

CONTENTS

IMPORTANT SAFETY INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . i

OPERATING A TW-60 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Front Panel Controls and Indicators. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Rear Panel Controls and Indicators. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

INSTALLING A TW-60 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Connection to Radios. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Wiring the Two-Way Radio Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

Setup Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

Rack Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

Connecting the TW-60 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

Verifying Operation of the TW-60 System . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

TECHNICAL REFERENCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

WARRANTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

Warranty Repairs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

Non-Warranty Repairs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

TW-60 PUBLIC SAFETY RADIO INTERFACE

TW-60 PUBLIC SAFETY RADIO INTERFACE

Please read and follow these

important safety instruc-

tions.

IMPORTANT SAFETY INSTRUCTIONS

1. Read these instructions.

2. Keep these instructions.

3. Heed all warnings.

4. Follow all instructions.

5. Do not use this apparatus near water.

6. Clean only with dry cloth.

7. Do not block any ventilation openings. Install in accordance with the
manufacturer's instructions.

CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

This symbol alerts you to the presence of uninsulated dangerous
voltage within the product's enclosure that might be of sufficient
magnitude to constitute a risk of electric shock. Do not open
the product's case.

This symbol informs you that important operating and main­tenance instructions are included in the literature accompanying
this product.

Figure 1: Safety Symbols

8. Do not install near any heat sources such as radiators, heat registers, stoves, or
other apparatus (including amplifiers) that produce heat.

9. Do not defeat the safety purpose of the grounding-type plug. A grounding
type plug has two blades and a third grounding prong. The third prong is
provided for your safety. If the provided plug does not fit into your outlet,
consult an electrician for replacement of the obsolete outlet.

10.Protect the power cord from being walked on or pinched, particularly at
plugs, convenience receptacles, and the point where they exit from the
apparatus.

11.Only use attachments/accessories specified by the manufacturer.

12.Unplug this apparatus during lightning storms or when unused for long
periods of time.

13.Refer all servicing to qualified service personnel. Servicing is required when
the apparatus has been damaged in any way, such as if the power-supply cord
or plug is damaged, liquid had been spilled or objects have fallen into the

TW-60 PUBLIC SAFETY RADIO INTERFACE

i

apparatus, the apparatus has been exposed to rain or moisture, does not
operate normally, or has been dropped.

14.Do not expose the apparatus to dripping or splashing and do not place objects
filled with liquids, such as vases, on the apparatus.

WA RN IN G: To reduce the risk of electric shock, do not expose this apparatus to
rain or moisture.

15.The appliance coupler is considered the disconnection device and should
remain readily operable for disconnection of unit.

ii

TW-60 PUBLIC SAFETY RADIO INTERFACE

1

“Radio interoperability”

allows public safety

providers to talk in real time

on-demand regardless of the

brand, model number, or

frequencies of the radio

equipment used.

OPERATING A TW-60

INTRODUCTION

Thank you for choosing this Clear-Com product.

“Radio interoperability” is the ability of public safety providers – law
enforcement, firefighters, EMS, emergency management, public utilities,
transportation and other personnel – to exchange voice communications on
demand, in real time. It is the term that describes how radio communications
systems should operate between and among agencies and jurisdictions that
respond to common emergencies. Communication should be achieved regardless
of the brands, model numbers, or frequency ranges of the radio equipment used.

The TW-60, in conjunction with an associated Clear-Com matrix
communications system, can be installed with an existing Land Mobile Radio
communications system to provide interoperability.

Please read this manual completely to better understand the functions of the
TW-60. This manual is to be used in conjunction with the manuals supplied for
the associated Clear-Com matrix communications system. For questions not
addressed in this manual, contact your dealer, distributor, or Clear-Com directly.
Our applications support and service people are ready to help.

Channel 1

Audio
Level

Adj.

Receive

1.5

1

0.75

0.5

0.25

Transmit Delay
(Seconds)

DESCRIPTION

The TW-60 Public Safety Radio Interface provides the physical interface point to
connect a Land Mobile Radio to a Clear-Com matrix communications system. It
provides the necessary control and voice connections, including the ability to
delay the retransmission of voice to allow for the key up time on the
retransmitting radio. Each 1RU TW-60 provides and powers four separate radio
interface channels.

FRONT PANEL CONTROLS AND INDICATORS

TW-60 Interface

Key

Level

Transmit

Level
Adj.

Power

Fault

Figure 1: Front Panel of TW-60 Interface

Level
Level

Adj.

Transmit

Channel 4

Key

Audio
Level

Adj.

Receive

1.5

1

0.75

0.5

0.25

Transmit Delay
(Seconds)

2

2.5
3
4

5

Auto

0

2

2.5

5

Auto

0

Channel 2

Key

3

Level

4

Transmit

Level
Adj.

Audio
Level

Adj.

Receive

1.5

1

0.75

0.5

0.25

Transmit Delay
(Seconds)

2

2.5
3
4

5

Auto

0

Key

Level
Level

Adj.

Transmit

Channel 3

Audio
Level

Adj.

Receive

1.5

1

0.75

0.5

0.25

Transmit Delay
(Seconds)

2

2.5
3
4

5

Auto

0

TW-60 PUBLIC SAFETY RADIO INTERFACE

1-1

• Receive Level Adjust: Used to adjust the receive level of the base station
two-way radio when there is no external volume control on the base station
radio.

Note: The receive level is set at the factory and should be adjusted only if the
remote radio does not have its own volume adjustment. The default is 12
o'clock, (1/2 rotation).

• Transmit Level Adjust: Use the TRANSMIT LEVEL ADJUST volume control
to set the level of the intercom's audio as heard at the remote station radio. The
factory default is 12 o'clock, (1/2 rotation).

• Transmit Delay: This rotary switch enables and adjusts the key up delay
available for each two-way radio. The available settings are shown in Table 1.

• Audio LED: This green LED illuminates when the system has sensed audio
from another channel and is supplying audio to this channel to be retransmitted.

• Key LED: This red LED illuminates when this channel is keying its associated
transmitter.

• Level LED: This bi-color red/green LED indicates audio levels received into
the system. Use this indicator to adjust the volume control on the two way radio
to match the system levels. The LED turns red when the signal is too high. Note
that proper audio levels cause the LED to light green when speaking, but flash
red about 10 percent of the time.

Power

40 MA (kfjakf) jljfakjakjf

100-250 VAC

Matrix GPI

• Power LED: This green LED illuminates when the system is receiving AC
power and is turned on.

• Fault LED: This red LED illuminates when the system is receiving AC power
and is turned on, but it has detected a problem with one of its internal power
supplies. The TW-60 may still operate in this condition, but service is required
to correct this condition.

REAR PANEL CONTROLS AND INDICATORS

Setup
Switches
1,2,3

Two-Way
Radio

Channel 4

Matrix
Audio

Setup
Switches
1,2,3

Two-Way
Radio

Channel 3

Matrix
Audio

Setup
Switches
1,2,3

Two-Way
Radio

Channel 2

Figure 2: Back Panel of TW-60 Interface

• Power Switch: This switch turns the TW-60 on or off.

• IEC Power Inlet Connector: The AC power cord connects to this receptacle.

• Matrix GPI Connector: DB-9M connector used to connect control and audio
signals to the Clear-Com matrx.

Matrix
Audio

Setup
Switches
1,2,3

Two-Way
Radio

Channel 1

Matrix
Audio

1-2

TW-60 PUBLIC SAFETY RADIO INTERFACE