Collcomm NCS-C151 Manuale utente

NCS-C151

INSTRUCTION MANUAL

Rev B

Collcomm Inc.

d.b.a. NCS

Shipping Address

2310 Pendley Road

Cumming, Georgia 30041

Mailing Address

1595 Peachtree Parkway

Suite 204-123

Cumming, Georgia 30041

Toll Free Tel. & Fax : 888- 883-5788

Email : [email protected]

Web Site: www.collcomminc.com

collcomm inc

NCS-C151 Manual Rev B Page 2

Revision History

Rev

Description

Date

App’d

Initial Release

07/14/14

JFP

Corrected for Trunking Radio on RAD1;

Added Tx Audio Levels; corrected DC

wire size & current consumption

1/7/16

JFP

Removed 125mVpp AGC Reference

3/27/17

JFP

Model No.: NCS-C151

Serial No. : ___________________________

Accessory Kit

Item # Description QTY

1 10’ DC Power Cable (NCS-410-PSP-10) 1

2 Mounting Feet 4

3 Mounting Bracket Kit 1

NCS-C151 Manual Rev B Page 3

Table of Contents

Section Description Page

1.0 Introduction 4

2.0 Safety Information 4

3.0 Front Panel Controls 5

4.0 Radio Requirements 5

4.1 Receive Audio 5

4.2 Transmit Audio 5

4.3 PTT 5

5.0 Power Supply 6

5.1 Power Requirements 6

5.2 Power Connection 6

5.3 Polarity 6

5.4 Fusing 6

6.0 Opening Unit to Perform Adjustments 7

7.0 Internal Setup and Adjustments 8

8.0 Trunking Delay Operation 10

9.0 Radio Interface Cables 11

9.1 Radio Interface and AUX Jack Pin-outs 12

10.0 Troubleshooting 13

11.0 Contacting NCS 14

12.0 C151 Specifications 15

13.0 Warranty 16

NCS-C151 Manual Rev B Page 4

1.0 Introduction

The C151 provides a method of connecting two radios together for purposes of

in-band or cross-band repeating.

Almost any radio can be used with the C151. Either VOX or COR can be used

as a “busy” signal and COR polarity can be either + or -. Receive audio levels

do not need adjustment due to built-in AGC circuits for both radios. Transmit

audio levels can be adjusted independently for each radio.

A separate record output is provided that records audio transmitted on either

radio. A record control output is included to control an external recorder.

Typical Application

Conventional Radio –RAD 2 Trunking Radio –RAD 1

2.0 Safety Information

The C151 is an electrical device requiring appropriate safety measures during

installation and operation. The following safety precautions should be

observed:

When connecting the unit to a DC power source, a minimum wire size of

24 AWG should be used. When using in a mobile environment,

automotive grade wire should be used.

Do not route cables or wires through areas that may cause the insulation

to be worn resulting in shorting of the wires to ground or to each other.

Do not attempt to operate this equipment while driving a vehicle. For

safety, pull over to the side of the road when making adjustments.

NEVER connect this device to an AC voltage source. Death or injury could

occur and/or the unit can be badly damaged. Connect this device only to a

DC power source with a voltage output of 9-16 volts and a current

capability of at least 100 ma.

NCS-C151 Manual Rev B Page 5

3.0 Front Panel Controls

4.0 Radio Requirements

4.1 Receive Audio

Receive Audio input levels from the radio are not critical. The Busy lights

activate (when using VOX) at approximately 150mV. Receive audio input

levels are automatically adjusted by an AGC circuit. The AGC circuit for

each radio will produce an output of 1.25Vpp.

4.2 Transmit Audio

Transmit audio levels are separately adjustable for each radio and

sufficient gain is available to drive nearly any radio.

4.3 PTT

PTT is via an Open-Drain output. This signal pulls the PTT line of the

radio low and will key any radio with a low-true PTT requirement.

Maximum switching capacity of the PTT output is 100V, 1.5A DC.

Item

Description

Power Switch with Green Indicator

Delay Circuit Power Indicator

Audio Delay Set Pot

Radio 1 & 2 Indicators: Red = Transmit and Green = Receive

1 2 3 4

NCS-C151 Manual Rev B Page 6

5.0 Power Supply

5.1 Power Requirements

The NCS-C151 will operate with any 9-16 VDC power supply capable of

providing at least 100mA continuous.

5.2 Power Connection

Power is supplied to the cable on the rear of the unit. The connector is an

AMP/Tyco Right Angle Two Conductor (P/N 1-770966-0)

5.3 Polarity

Power cable polarity is: Red = +, Black = - (or chassis).

5.4 Fusing

The C151 uses an internal self-resetting fuse. If the fuse opens, there is

likely to be an internal malfunction and the unit should be repaired by a

qualified technician.

NCS-C151 Manual Rev B Page 7

6.0 Opening Unit to Perform Adjustments

Follow the procedure shown below to open the unit up to perform settings and

adjustments:

Rear View of Unit –locate 4 screws

1. Remove 4 screws, rear panel & bezel

2. Slide the whole assembly (both circuit card assemblies) out of the

enclosure. Be careful to secure both boards.

3. Ready for Adjustment

NCS-C151 Manual Rev B Page 8

7.0 Internal Setup and Adjustments

The lower of the two printed circuit board assemblies inside the C151 has

provisions for setting up COR/VOX, COR Polarity and VOX Hang time. To

setup these functions, remove the rear cover of the C151, slide the PCB

Assembly (2 Boards) out of the enclosure and refer to the diagram below

(the lower of the 2 boards) for the locations of settings and adjustments.

The top board does not require any adjustments.

Radio 1 Receive Setup and Transmit

Audio Level Adjustments

Radio 2 Receive Setup and

Transmit Audio Level Adjustments

Record Output Level

Adjustment

Factory Installed Shunts & cables on

Internal Board Connector EXCEPT

POSITION 1.

RADIO1 Setup switches set for Low-

going COR (COR- = ON) and normal

Hang-time (LOW-HANG = OFF).

RADIO2 Setup switches set for Low-

going COR (COR- = ON) and normal

Hang-time (LOW-HANG = OFF).

NCS-C151 Manual Rev B Page 9

7.1 Connect one radio to the RAD1 jack and the other radio to the RAD2 jack

on the rear panel of the C151 using radio-specific Radio Cables. Connect

the power cable to 12VDC.

7.2 Set the COR, VOX and Hang-time settings as required for each radio.

7.3 Turn On the Power switch. The Green “ON” indicator should illuminate.

7.4 Transmit a signal to the radio connected to the RAD1 jack. The green

BUSY indicator for RAD1 should light up and the red TX indicator for RAD2

should light up. This will cause the radio connected to the RAD2 jack to

transmit. Adjust the RAD2 TX level control using a service monitor or another

radio. Stop transmitting.

7.5 Transmit a signal to the radio connected to the RAD2 jack. The green

BUSY indicator for RAD2 should light up and the red TX indicator for RAD1

should light up. This will cause the radio connected to the RAD1 jack to

transmit. Adjust the RAD1 TX level control using a service monitor or another

radio. Stop transmitting.

7.6 This completes Setup.

7.7 Reinstall the two (2) circuit board assemblies inside the enclosure as

follows:

1. Slide the bottom circuit board into the SECOND from the BOTTOM

SLOT on the rear of the enclosure. Slide the top circuit board into the

FOURTH from the TOP SLOT on the rear of the enclosure. Make

sure both sides of each circuit board slide into the corresponding slot

on each side of the enclosure.

TOP Board (4th slot from top)

BOTTOM Board (2nd slot from bottom)

NCS-C151 Manual Rev B Page 10

2. Slide the assembly all the way into the enclosure making sure the

power switch fits through the hole on the front panel

3. When the assembly is all the way into the enclosure, re-install bezel,

rear panel and tighten 4 screws.

8.0 Trunking Delay Operation

8.1 Overview

The NCS-C151 is equipped with a Trunking Delay Module connected to Radio

1 (RAD 1). The purpose of the circuit is to delay the transmitted audio and PTT

release while the Trunking Radio acquires a channel from the Trunking Radio

System controller. This prevents voice transmissions from being lost or

“chopped” during the channel assignment (trunking handshake).

8.2 Setup and Operation

The delay module has an adjustment on the front of the NCS-C151 for setting

the total Trunking Channel Acquisition delay. Turn this control using a small

screwdriver to equal or exceed the maximum delay expected from the trunking

system. Available values (also shown on the unit’s front panel) are: 0ms (no

delay), 50ms, 100ms, 200ms, 400ms, 800ms, 1600ms and 3200ms.

During operation, when the trunking radio is keyed from the C151, the radio will

key for at least the set delay period plus the length of the receive audio time

from RAD 2 (the audio from RAD 2 will be transmitted complete after the time

of the delay set).

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