Broadcast Tools SS 4.2 Manuel utilisateur

Installation and Operation Manual

Due to the dynamic nature of product design, the information contained in this

document is subject to change without notice. Broadcast Tools, Inc., assumes no

responsibility for errors and/or omissions contained in this document. Revisions

of this information or new editions may be issued to incorporate such changes.

Broadcast Tools® is a registered trademark of Broadcast Tools, Inc.

No part of this document may be reproduced or distributed without permission.

Visit www.broadcasttools.com for important product update information.

Software Version 1.21

Manual update 8/29/04

SS 4.2

Four Input, Dual Output Stereo Audio Matrix Switcher

INC

e-mail: [email protected] voice: 360.854.9559 fax: 866.783.1742

SS 4.2 Installation and Operation Manual

Table of Contents

Section Title Page #

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Who to Contact for Help . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Installation Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Setting Operation “Dip” Switches:. . . . . . . . . . . . . . . . . . . . . . . . . 8

Power-Up Feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Mounting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Connecting Inputs/Outputs/Relays . . . . . . . . . . . . . . . . . . . . . . . . 10

Adjusting Input and Output Levels . . . . . . . . . . . . . . . . . . . . . . . 10

Input Channel Expansion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Remote Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Serial Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Connecting the Serial Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Set-up Commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Output Port Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Pulse Stretcher . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

PIP” (GPI) Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Warranty. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

CONTENTS

e-mail: [email protected] voice: 360.854.9559 fax: 866.783.1742

SS 4.2 Installation and Operation Manual

INTRODUCTION

Thank you for your purchase of a Broadcast Tools® SS 4.2 Four Input, Dual

Output Stereo Audio Matrix Switcher (referred to as the SS 4.2 throughout this

manual). We’re confident that this product will give you many years of

dependable service. This manual is intended to give you all the information

needed to install and operate the Broadcast Tools® SS 4.2 Four Input, Dual

Output Stereo Audio Matrix Switcher.

SAFETY INFORMATION

Only qualified personnel should install Broadcast Tools® products. Incorrect or

inappropriate use and/or installation could result in a hazardous condition.

WHO TO CONTACT FOR HELP

If you have any questions regarding your product or you need assistance, please con-

tact your distributor from whom you purchased this equipment.

If you would like more information about Broadcast Tools® products, you may

reach us at:

Broadcast Tools, Inc.

131 State Street

Sedro-Woolley, WA 98284-1540 USA

Voice: 360.854.9559

Fax: 866.783.1742

Internet Home Page: www.broadcasttools.com

E-mail: [email protected]

THANK YOU FOR CHOOSING

BROADCAST TOOLS® BRAND PRODUCTS!

CAUTION!

Broadcast Tools®

Products, as with any

electronic device, can

fail without warning.

Do not use this product

in applications where a

life threatening condition

could result due to failure.

NOTE:

This manual should be

read thoroughly before

installation and operation.

WEBSITE:

Visit our web site for

product updates and

additional information

Broadcast Tools is a Veteran Owned Business

Designed, Assembled and Supported in WA State, USA

e-mail: [email protected] voice: 360.854.9559 fax: 866.783.1742

SS 4.2 Installation and Operation Manual

DESCRIPTION

The Broadcast Tools® SS 4.2 provides matrix audio switching of 4 stereo inputs to

2 stereo plus 2 mono outputs. Matrix switching allows any or all inputs to be

assigned to any or all outputs. The SS 4.2 may be controlled via front panel switch-

es, contact closures, 5-volt TTL/CMOS logic and/or the multi-drop RS-232 serial

port. Installation is simplified with removable screw terminals (Euro).

FEATURES

• Separate input selection pushbuttons are provided for each output channel.

• Three switching modes. Interlock, overlap and mix.

• Internal audio activity/silence sensors monitor both output channels. Each is

equipped with front panel LED indicators; spst alarm relays and adjustable

alarm delay and restore duration. Sensitivity is factory set at –36db.

• Power-up selection of inputs to outputs, mute or last source selected.

• Stereo headphone amplifier with front panel output selection switch, headphone

jack and level control.

• Most configuration options via rear panel dipswitches.

• 16 input GPI port (RMT or PIP) with LED indicator.

• 4 open collector channel status outputs or programmable via burst commands.

• 4 spst relay outputs with multiplex function on output two. Programmable via

burst commands.

• Multi-turn input and output level controls.

• Electronically balanced stereo inputs.

• Electronically balanced stereo and monaural outputs.

• Low noise and distortion circuitry.

• Remote control of front panel functions and status.

• Multi-drop RS-232 serial port with data activity LED.

• Multiple units may be cascaded to expand inputs.

• Depluggable screw (EURO) terminals for ALL I/O connections.

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SS 4.2 Installation and Operation Manual

DESCRIPTION

FUNCTION DESCRIPTION

Front Panel:

The SS 4.2 is a 1-rack unit device (19”w x 1.75”h x 4.8”d). The front panel sup-

ports ten selection switches, 16 LED indicators, headphone selection switch, _” jack

and level control.

Rear Panel:

Installation is simplified with pluggable screw terminals. The rear panel hosts audio

and control pluggable screw terminals, input/output trimmer controls, PGM dip-

switch, multi-drop RS-232 modular connector and 16 VAC @ 600 ma power supply

connector.

Switches:

The front panel of the SS 4.2 contains separate input selection pushbuttons are pro-

vided for each output channel. A mute switch is provided to turn off each audio

channel, while the enable switch may be configured as a safety switch. A push-push

switch is furnished for headphone monitoring of the two output channels. The input

channels may be programmed for the following operations:

• Overlap - Overlap one audio source with another while the button for the sec-

ond source is held down. Both channels will be fed to the output until the sec-

ond button is released, at which time the first audio source will be switched off.

• Mix - May connect more than one input at a time to any given output - Push

once to connect input, then hold MUTE and press the selected input again to

disconnect.

• Interlock - Connecting one input to any output disconnects all other inputs from

that output

LED Indicators:

The SS 4.2’s front panel LED indicators provide operational display of the follow-

ing information:

• Led indicators on each input channel switch.

• The mute indicator is lit when all channels are off.

• Two “ACT” led’s indicating audio activity for each output channel. Sensitivity

set at

• –36db.

• Two “SS” led’s indicating when an output channel has drop below –36db.

• “PIP” Parallel Input Port (GPI) active, indicating any change with the 16 input

GPI “Pulse Stretcher” ports.

• “Pwr/Ser” led which indicates valid power and will flash when the serial RS-

232 port is receiving or transmitting data.

WEBSITE:

Visit our web site for

product updates and

additional information

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SS 4.2 Installation and Operation Manual

DESCRIPTION

Controls:

• Headphone monitor switch to select which output channel is monitored.

• Headphone jack

• Headphone level control

Audio Inputs:

Each of the 4 stereo inputs are balanced bridging (20KW) at a nominal line level of

+4dBu. Sufficient gain is provided for unbalanced consumer level products. Multi-

turn level controls are provided for each channel.

Audio Outputs:

The SS 4.2 provides two balanced stereo outputs. Two balanced monaural outputs

are also provided which follow their respective stereo outputs. The outputs may be

adjusted.

Silence Sensor:

The SS 4.2 contains individual silence sensors for each of stereo output channels.

For each channel, a detector monitors the sum of each stereo channel. The factory

default delay is set at 10 seconds, with a threshold of -30 dB, while the restore time

is set at 10 seconds. Upon silence delay detection, the “SS-1 or SS-2” spst relay is

closed for the duration of the silence and the Corresponding (SS-1 or SS-2) LED is

lit for duration of silence. The sensor may be programmed for:

• Number of seconds of silence that must be present before an alarm state is

reached or terminated.

• Number of seconds that valid audio must be present before an alarm state is

cleared.

• Remote Control (GPI) Inputs:

• Most front panel functions may be controlled with the 5-volt TTL/CMOS logic

compatible, contact closure inputs.

PIP (GPI) Input:

The Parallel Input Port with the Programmable Pulse Stretcher provides 16 pulse-

stretched parallel 5-volt TTL/CMOS compatible GPI inputs. The inputs are pulled

high to 5 volts through a 20KW resistor and are activated by pulling the input to

ground. These inputs supply status to any serial polling device (when the unit ID is

set to 0, no polling of inputs is required). For each channel, a pulse of specified min-

imum input duration (000 to 2.55 Seconds) causes the status to go true or the end of

the input pulse.

WEBSITE:

Visit our web site for

product updates and

additional information

e-mail: [email protected] voice: 360.854.9559 fax: 866.783.1742

SS 4.2 Installation and Operation Manual

DESCRIPTION

“Open Collector” Status Outputs, 4 Port Output Control

The SS 4.2 provides four open collector status outputs. The status outputs may be

configured to operate in one of three modes:

• The status outputs follow the associated channel.

• The status outputs a one-second pulse when the associated channel is selected.

• Software control

Relay Outputs, 4 Port Output Control:

The SS 4.2 contains 4 spst (normally open) relays. Each relay may be latched on,

latched off or momentarily turned on by a non-dedicated computer. The “pulse”

time may be set from 100 msec to 9.9 seconds. The default pulse length is one-sec-

ond. The relays may be set for “MPX” mode. In the multiplex mode, the relay fol-

lows the associated channel on output two.

Serial Communication:

The SS 4.2’s serial communication is supplied with a multi-drop RS-232 port, allow-

ing up to 4-SS 4.2’s on the same computers serial port. Commands may be entered

either via a menu (menu mode) or a short form code (burst mode). All commands

and responses use normal ASCII characters, facilitating scripting. A burst mode

command starts with an asterisk (“*”) followed by the device (ID) address as a sin-

gle decimal digit. The command to enter menu mode starts with a space (“ “) fol-

lowed by the device (ID) address as a single decimal digit. The menu mode displays

certain parameters, and allows the setting of the command serial communications

rate (“baud rate”), front panel lockout mode, silence sensor delay/restore times and

the selection of audio inputs and outputs.

User Programming:

The SS 4.2 programming is stored in non-volatile memory. Configurations are set

with selection dipswitches and computer commands.

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SS 4.2 Installation and Operation Manual

INSTALLATION

INSTALLATION GUIDELINES

Inspection:

Please examine your SS 4.2 carefully for any damage that may have been sustained

during shipping. If any is noted, please notify the shipper immediately and retain

the packaging for inspection by the shipper. The package contains the SS 4.2, 16.5

vac @ 600ma power transformer, Installation manual and a reversed modular serial

cable with a (S9) 9 pin D-Sub adapter.

Setting Operation “DIP” Switches:

The SS 4.2 is equipped with an 8-position “PGM” dipswitch. The dipswitch speci-

fies 2-bit unit ID, baud, audio modes (mix, interlock, overlap), and other features

listed below. Access to this switch is on the rear panel. Follow the description

below.

WEBSITE:

Visit our web site for

product updates and

additional information

DIP (SW-13) “PGM” Switch Functions

Switch

Number Default

Setting Function

1 OFF Add 1 to Address (Default ID = 0)

2 OFF Add 2 to Address

3 OFF Baud rate (Default = 9600)

4 OFF Baud rate

5 OFF Stereo Audio Switching (Default = Overlap)

6 OFF Stereo Audio Switching

7 OFF Remote Control (Default) / PIP/GPI

8 OFF Power up modes (Default = Last Source Selected)

Address (ID) DIP Switches

SW13-1 SW13-2 Mode

OFF OFF ID = 0

ON OFF ID = 1

OFF ON ID = 2

ON ON ID = 3

Baud Rate DIP Switches

SW13-3 SW13-4 Mode

OFF OFF 9600

ON OFF 2400

OFF ON 19200

ON ON 38400

Audio Switch Mode DIP Switches

SW13-5 SW13-6 Mode

OFF OFF Overlap

ON OFF Interlock

OFF ON Interlock

ON ON Mix

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SS 4.2 Installation and Operation Manual

INSTALLATION

Mounting:

The SS 4.2 is designed to be rack mounted in a standard 19” rack. It should be

mounted in an area that is accessible from the rear and preferably away from sources

of heat. We recommend before permanently installing the SS 4.2, you bench test and

become familiar with the operation of the unit.

Power Supply Connection:

Install the 16.5 Vac @ 600ma power supply connector into the power receptacle on

the SS 4.2. When ready, plug the power supply into the appropriate AC receptacle.

Connecting The Audio Inputs, Outputs, Status Inputs And OC/Relays:

The input channels are numbered from 1 through 4 on the rear panel from left to

right. The SS 4.2 interfaces to your audio equipment through depluggable (Euro)

screw terminals. Follow the legends for the desired audio input and output connec-

tions, which appear on the rear side of the printed circuit board and also on the lay-

out drawing on the last page of this manual. Remove each screw terminal, strip each

conductor, insert the conductor into the terminal and screw down the capture screw.

The terminals accommodate wire sizes from 16 - 28 AWG solid or stranded wire.

Connections may be made to the + and - inputs for balanced operation, or to the +

input and grounding the - side for unbalanced input operation. Connections can be

made to the + and - outputs for balanced operation, or to the + output and ground for

unbalanced output operation.

The input impedance is 20KΩ, 600Ωterminations may be installed on the

connector.

CAUTION!

In no case should

either the + or - out-

puts be connected to

ground.

Installation of the SS

4.2 in high RF environ-

ments should be per-

formed with care.

Shielded cable is sug-

gested for all control,

audio inputs and out-

puts. All shields should

be tied to the “EGND”

terminal on each chan-

nel. The station ground

should be connected to

the chassis ground

screw (CH1) located

behind J1 as viewed

from the rear. For

lightning protection

devices, check out

www.polyphaser.com

and www.itwlinx.com.

Remote Mode DIP Switches

SW13-7 Function

OFF Remote Control

ON PIP enabled

Power-up Mode DIP Switches

SW13-8 Function

ON Last Source Selected

OFF Program via front panel

SS 4.2 Front Panel switch operation

Action Result

1. Push Channel

Buttoninthe

“OP-1” area

Channel is connected to output 1. To mute the

active channel, simultaneously hold down the

mute switch and the desired input channel.

1. Push Channel

Buttoninthe

“OP-2” area

Channel is connected to output 2.To mute the

active channel, simultaneously hold down the

mute switch and the desired input channel.

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SS 4.2 Installation and Operation Manual

INSTALLATION

It is recommended that all cables connected to the SS 4.2 be looped through fer-

rite cores to suppress RF. Surge protection with RF filtering such as the Tripp Lite

“ISOBAR 4” is also suggested for the power transformer. The purchase of an

inexpensive uninterruptible power supply (UPS) will provide back up in case of

power outages. Check out our web site for lightning protection links.

Adjusting Input and Output Levels:

Once the input and output connections have been made, the input levels can be set.

The switcher is factory set for unity. Recommended input levels would be in the

range of -15 dBu to +10 dBu. Should input levels need to be changed, they are

accessible from the rear panel. Each stereo input and output is labeled and has one

trimmer per channel.

Input Channel Expansion:

Input expansion may be accomplished by connecting a shielded cable between the

first units EXT 1+ input terminal and the second units unbalanced output. The

shield should be connected to the ground terminal. Follow the same procedure for

the EXT +1 right channel. The above example provides 8 inputs, with the first

providing the main output.

Remote Control:

Most front panel functions of the SS 4.2 may be remote controlled via the plug-

gable screw connectors located on the rear panel. The SS 4.2 accepts momentary

contact closures, open collector or TTL/CMOS logic levels. Open collector sta-

tus/tally is also provided and follows the action of the front panel LED’s.

Serial Interface:

The multi-drop RS-232 transceiver always switches between transmit and receive

mode, unless the unit ID is zero. In that case, the unit will always leave the RS-

232 transceiver enabled. This is the correct setting for a single unit controlled via

RS-232.

WEBSITE:

Visit our web site for

product updates and

additional information

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