CES VAD-1 Installation Manual

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VAD-1

Universal Delay Module

CES WIRELESS TECHNOLOGIES CORP.

925-122 South Semoran Blvd.,

Winter Park, FL 32792

Tel: (407) 679-9440

Fax: (407) 679-8110

e-mail: sales@cesusa.com

support@cesusa.com

Ref: MAN84

Printed in USA

VAD-1 Universal Delay Module

Installation Instructions

GENERAL DESCRIPTION

The VAD-1 provides a programmable audio delay from 2ms to 1 second. Selection of the delay time is achieved through solder bridges or may occur serially. (The VAD-8 also available from CES provides a delay of up to 8 seconds).

INSTALLATION

Installation and programming of this CES product must be completed by a qualified two-way radio technician or engineer. CES is not responsible for any operational problems caused by system design, outside interference, or improper installation. Observe static prevention techniques.

Before Installing

The VAD-1 may be installed in almost any transmitter/receiver. The module should be programmed prior to performing the actual installation.

Input Level Adjustment

The Input audio level can be adjusted by turning R18 to increase or decrease the input audio level. See Figure 2 for component layout diagram.

Output Level Adjustment

The output audio level can be adjusted by turning R2 to increase or decrease the output audio level. See Figure 2 for component layout diagram.

Time Delay Selection

Following Table 1 place solder bridges on the specified coding pads. X means solder bridge required, blank means leave bridge open. See Figure 2 for the location of the solder bridges on the PCB. To control the delay time serially, short J16. For programmable values not listed in Table 1, please contact CES or your local CES authorized distributor.

Mute Input

A mute input is provided to turn off the audio output. The polarity is programmable using jumper J15. Short J15 for active High. Default is open, active Low. See Figure 2 for component layout diagram.

Wiring Interface

See Table 2 for wiring details.

Mounting Details

Mount the module to a suitable location in the transceiver, preferably away from high RF and sensitive receiving stages, with the provided double-sided tape.

Table 1. Program Jumpers

The VAD-1 is programmable in 2mS steps. For programmable sheets with all programmable values please contact CES. X means bridge jumper

mSec J12 J11 J10 J9 J8 J7 J6 J5 J4 J3 J2 J1

2 X X X X X X X X X X X X

20 X X X X X X X X X X 30 X X X X X X X X X 40 X X X X X X X X X 50 X X X X X X X X X X 60 X X X X X X X X 70 X X X X X X X X X X 80 X X X X X X X X

90 X X X X X X X X X 100 X X X X X X X X X 110 X X X X X X X X

120 X X X X X X X 130 X X X X X X X X X X X 140 X X X X X X X X X 150 X X X X X X X X X 160 X X X X X X X 170 X X X X X X X X X 180 X X X X X X X X 190 X X X X X X X 200 X X X X X X X X 226 X X X X X X X X X 250 X X X X X X X 276 X X X X X X X X X 300 X X X X X X X X 326 X X X X X X X X X 350 X X X X X X X 400 X X X X X X X 450 X X X X X X X X X 500 X X X X X X 550 X X X X X X X X X 600 X X X X X X X 650 X X X X X X X X X 700 X X X X X X 750 X X X X X X 800 X X X X X X 850 X X X X X X X X 900 X X X X X X X X 950 X X X X X X

1000 X X X X X 1024 X X X

Specifications

Dimensions: 1.12 x 2.10 x 0.38 inches Supply Input Voltage: 5.5 to 24 Volts DC Module Delay Period: Programmable in 2 millisecond Steps from

2 ms to 1.024 Power Supply Input Current: 7.6 mA Typical @ 12v, no Audio Load Converter Resolution: 14 Bits with MuLaw Compression Converter Frequency Response: 200 to 3400 Hz Converter Gain Variation Over Frequency Response: Noise Input into “codec” at 0.5VP-P 1.75% Noise Input into “codec” at 2.5VP-P 4.25% Module Audio Input: Pseudo-Differential or Single Ended with Level

Module Audio Output: Single Ended with Level Control Module Audio Output Drive Impedance: Module Audio Output Drive Voltage with 600 Ohm Load:

0.55dB

Control

360 Ohm Typical

4.75v P-P

Figure 1. Circuit Diagram VAD-1

Table 2. Wiring Diagram

J13 Color Description

Pin 1 Red

Pin 2 Black

Pin 3 Orange

Pin 4 Yellow

Pin 5 Light Green

Pin 6 Blue

Pin 7 Violet

Pin 8 Gray

Pin 9 White Not Connected.

Pin 10 Brown

Pin 11 Dark Green Not Connected.

Pin 12 White/Red Not Connected.

Pin 13 White/ Blue

Pin 14 Tan

Pin 15 White/Green

12 V: Connect to the radio’s + ve supply. Ground: Connect to 0V (Ground). Ground: Connect to 0V (Ground). Audio In: Connect to the input Audio source, (audio positive). Audio In: Connect to the input Audio ground, (audio negative). Ground: Connect to 0V (Ground). Audio Output: Connect to the (transmit) audio stage, after the

microphone clipper/limited stages, and before the modulator circuit.

Ground: Connect to 0V (Ground).

Mute Input: This input can be used to turn off the audio output.

Serial Send Enable: Serial Control of delay time. Serial Clock: Serial Control of delay time. Serial Send Data: Serial Control of delay time.

For technical support call CES at the numbers below:

CES Wireless Technologies 925-122 S. Semoran Blvd. Winter Park, FL 32792 USA Phone: lnt. + 407-679-9440 Fax: Int. + 407-679-8110 E-Mail: support@cesusa.com Web Site: http://www.ceswireless.com

Copyright CES 1996. All rights reserved. Not to be reproduced in whole or in part without the written consent of CES. All information contained in this document is carefully prepared and offered in good faith as a guide in the installation, use, and servicing of our products. Installers must ensure that the final installation operates satisfactorily, within the relevant regulatory requirements. We accept no responsibility for incorrect installation. We reserve the right to change products, specifications, and installation data at any time, without notice. Printed in the USA.

Limited Warranty

CES Wireless Technologies (CES) warrants it's products to be free of defects in material and workmanship and extends this warranty under intended use and normal service conditions to the original owner for a period of two (2) years from the date of purchase.

This warranty does not apply to any product that has been subjected to repairs or alteration not authorized by CES, or for any product that has been damaged due to accident, abuse, neglect, vandalism, loss, unreasonable use, improper installations, lightning, fire, or water damage, or any acts of God.

The obligations of CES are limited to repairing or replacing, at the option of CES, any product or component that is returned to the factory all transportation charges prepaid, accompanied by proof of purchase and which examination reveals to have been defective within the warranty period stated above. CES does not assume, nor is any person authorized to assume for it, any obligation other than that stated herein.

CES shall not be liable under this warranty, or any implied warranty, for the loss of use of the product or for any other consequential loss or damage incurred by the purchaser, or fitness for a particular purpose.

CES VAD-1 Installation Manual

Specifications and Main Features

Frequently Asked Questions

User Manual