Broadcast Tools 3×2 Active Crosspoint Switcher Owner's Manual

Installation and Operation Manual for the

3 x 2, Ver C

Three Input, Dual Output Stereo Audio Switcher

Copyright  1995 – 2001 by Broadcast Tools, Inc. All rights reserved.

Except as permitted under the United States Copyright Act of 1976, no part of this document may be reproduced or distributed without permission

All specifications and features for this product are subject to change without notice.

Software Version: 3X2_1129.S19 Manual update 10/10/01

Broadcast Tools, Inc.

3 x 2, Version C, Dual Stereo Audio Switcher

INTRODUCTION

Thank you for your purchase of a Broadcast Tools, Inc., 3x2 C Dual Stereo

Audio Switcher. 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 unit.

✎

NOTE: This manual should be read thoroughly before installation and

operation.

SAFTEY INFORMATION

Only qualified personnel should install Broadcast Tools products. Incorrect or inappropriate use and/or installation could result in a hazardous condition.

Broadcast Tools Products, as any electronic device, can fail without warning. Do not use this product in applications where a life threatening condition could result due to failure.

WHO TO CONTACT FOR HELP

If you have any questions regarding your product, or you need assistance, please contact your distributor from whom you purchased this equipment or contact us directly.

If you would like more information about Broadcast Tools, Inc., products, you may reach us at:

Broadcast Tools, Inc.

131 State Street

Sedro-Woolley, WA 98284

Voice 360 . 854 .9559

Fax 360 . 854 .9479

Internet Home Page www.broadcasttools.com

E-mail [email protected]

Thank you for choosing Broadcast Tools!

Installation and Operation Manual

Broadcast Tools, Inc.

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Broadcast Tools, Inc.

3 x 2, Version C, Dual Stereo Audio Switcher

PRODUCT DESCRIPTION

The 3 x 2 C Dual Stereo audio switcher is designed to accommodate three stereo inputs and two stereo outputs.

The 3 x 2 C Dual Stereo audio switcher may be controlled via any momentary and/or sustained switch, contact closure, TTL/CMOS logic, while Status/Tally open collector outputs are provided for remote status. The 3 x 2 C Dual Stereo audio

switcher also has the ability to be controlled by a computer or any serial RS232 device.

The 3 x 2 C Dual Stereo audio switcher features three (3) operating modes:

1 - Mix mode # 1. Allows control with an alternate action (Toggle) low logic level pulse via the remote control connector. This mode is also available via the serial port. The power-up feature may be used in this mode.

2 – Mix mode # 2. Allows control with a sustained low logic level via the remote control connector. This mode may be used to interface with the Scott Studio

8255 I/O card. NOTE: Serial control and the power-up feature is disabled in

this mode.

3 – Interlock mode. P rovides that when a channel is selected, the first audio source will be immediately turned off and the second audio source will be turned on. Serial control and the power-up feature for output # 1 are functional.

Another user selectable feature is the way the 3 x 2 C Dual Stereo audio

switcher will act when power is first applied (or re-applied after a power failure). You have your choice of all channels being OFF on power-up or any one of the three input channels being assigned to either output channel at power-up. Disabled in some modes.

INSTALLATION

Installation of the 3 x 2 C in high RF environments should be performed with care. Shielded cable is suggested for all control, audio inputs and outputs. All shields should be tied to the EGND terminals. The station ground should be connected to the chassis ground screw located on the far right side of the 3 x 2 C as viewed from the rear. It is recommended that all cables connected to the 3 x 2 C be looped through ferrite cores to suppress RF. Surge protection with RF filtering such as the Tripp Lite

“ISOBAR 4 or 6” is also suggested for the wall transformer. The purchase of an inexpensive UPS will provide back-up in case of power outages.

Installation and Operation Manual

Broadcast Tools, Inc.

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Broadcast Tools, Inc.

3 x 2, Version C, Dual Stereo Audio Switcher

INSTALLATION, Continued

The 3 x 2 C Stereo Audio Switcher is simple to install. The input and output signals are connected via pluggable screw terminals. Installation of the 3 x 2 C Stereo

Audio Switcher consists of five steps:

1. Inspection

2. Bench test

3. Mount the unit on a rack shelf or a desk top

4. Connect your equipment to the unit

5. Serial operation, if applicable

STEP 1: INSPECTION

Please examine your 3 x 2 C Stereo Audio Switcher carefully for any damage that may have been sustained during shipping. If any is noted, please notify the shipper immediately. Retain the packaging for inspection by the shipper. The package should contain the 3 x 2 C Stereo Audio Switcher, 16 to 18 Vac @ 600 ma wall power transformer, this manual, 15 pin female D-connector/shell, 7 foot modular cable, 9 pin

D-Sub adapter.

STEP 2: BENCH TEST

Place each unit on a workspace and connect power to the unit. Check to see if

LED #1 (Switch 1) and the power LED are lit (Source one is the power-up factory default). Connect an audio source to stereo input one and a monitoring device to the output. Verify that audio is present. Repeat the process until each channel’s operation has been verified. This would also be a good time to set up the desired jumper options.

STEP 3: MOUNTING

Mount the unit on a rack shelf, such as the Broadcast Tools RM-1, allowing adequate airflow for cooling. The optional RM-1 may be ordered separately for rack mounting. A filler panel, model number FP-1 may be ordered to fill the gap if only one

3 x 2 C Stereo Audio Switcher is mounted in the RM-1.

STEP 4: CONNECT YOUR EQUIPMENT

The 3 x 2 C Stereo Audio Switcher interfaces to your equipment (sources and loads) through pluggable rear panel screw terminals. Follow the legends for the desired audio input and output connections. Follow the legends for the desired audio input and output connections, which appear on the rear side of the printed circuit board and also on the layout drawing on the last page of this manual. Remove each screw terminal, strip each conductor and 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.

Installation and Operation Manual

Broadcast Tools, Inc.

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Broadcast Tools, Inc.

3 x 2, Version C, Dual Stereo Audio Switcher

INSTALLATION Continued

STEP 5: SERIAL OPERATION

The supplied modular cable, 9 pin D-sub adapter may be connected to the

3 x 2 C Stereo Audio Switcher by inserting one end of the modular cable into the provided modular jack located on the rear of the 3 x 2 C. Plug the other end of the modular cable into either the 9 pin D-sub adapter labeled “S” or “S-9”. The adapter may now be plugged into your computers serial port. Only use the modular cord that is supplied with the 3 x 2 C or a replacement that reverses. Plug the supplied wall transformer into a source of 117vac and the cable end of the transformer into the power receptacle on the 3 x 2 C. T he 3 x 2 C may operate at 2400 baud. The unit is shipped set for

2400 baud, with 8 data bits, no parity and one stop bit. Load your favorite communication software package (Procomm, Bitcom, Windows 3.1/3.11 Terminal, Windows

95/98/ME/NT/2000/XP Hyper Terminal, etc.) Using the protocol of 2400-N-8-1. Set the mode to: DIRECT, Flow Control to: NONE and emulation to: ANSI. Follow the instructions below. The protocol is as follows: 2400, N, 8, 1.

Burst Mode Command Protocol

A burst mode command must be sent within 5 seconds. It starts with an asterisk

(*), then the listed command codes. Syntax of burst mode commands are listed below: i - Input channels 1 through 3. o - Output channels 1 and 2

*i1 - Connect input "i" to output 1.

*i2 - Connect input "i" to output 2.

*iB - Connect input "i" to both outputs.

*i0 - Disconnect desired input channel from both output channels

*i4 - Connect input "i" to output 1.

*i5 - Connect input "i" to output 2.

*i6 - Disconnects input "i" from output 1.

*i7 - Disconnects input "i" from output 2.

Installation and Operation Manual

Broadcast Tools, Inc.

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Broadcast Tools, Inc.

3 x 2, Version C, Dual Stereo Audio Switcher

REMOTE CONTROL CONNECTOR PINOUTS

Control of the switcher is available through the rear panel REMOTE CONTROL connector, providing a means of controlling the 3 x 2 C Stereo Audio Switcher/Router from a remote point. These digital inputs may be connected to any remote pair of switch contacts, such as external relays, switches, etc. The digital inputs may also be connected to external open-collector circuits or 5-volt logic signals.

NOTE: MIX modes 1 & 2 only !

J2 Pin #: CONTROL J2 Pin # STATUS

1 - Input 1 to output 1 7 - Input 1 to output 1

3 - Input 2 to output 1 9 - Input 2 to output 1

5 - Input 3 to output 1 11 - Input 3 to output 1

2 - Input 1 to output 2 8 - Input 1 to output 2

4 - Input 2 to output 2 10 - Input 2 to output 2

6 - Input 3 to output 2 12 - Input 3 to output 2

14-15 - Digital Grounds

NOTE: INTERLOCK Mode only !

J2 Pin #: CONTROL J2 Pin # STATUS

1 - Input 1 to output 1 7 - Input 1 to output 1

2 - Input 2 to output 1 9 - Input 2 to output 1

3 - Input 3 to output 1 11 - Input 3 to output 1

4 - Not used in this mode 8 - Input 1 to output 2

5 - Master mute 10 - Input 2 to output 2

6 - Output 2 select 12 - Input 3 to output 2

14-15 - Digital Grounds

NOTE: Pin 6, the output 2 select pin must be held low to select and/or mute any input on output 2.

Installation and Operation Manual

Broadcast Tools, Inc.

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Broadcast Tools, Inc.

3 x 2, Version C, Dual Stereo Audio Switcher

SETUP

Mode Selection (Refer to the PCB layout diagram on the last page of this manual).

JP-1, Pins 1 & 2 - 3 & 4 open - Mix Mode # 1

JP-1, Pins 1 & 2 closed – 3 & 4 open - Mix Mode # 2 (Default)

JP-1, Pins 1 & 2 open and 3 & 4 closed - Interlock Mode

Power-Up selection

To select a channel configuration at power-up, select the proper jumpers on

JP-3. To select NO channels at power-up, remove the two jumpers on JP-3 (Default).

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 gain. Recommended input levels would be in the range of -15 dBu to +27 dBu. The inputs and outputs can both add an additional 15 dB of gain from the factory settings. Should input levels need to be changed, they are accessible from the rear panel. Each stereo input is labeled and has one input adjustment. Similarly, the output channel adjustment may be accessed with the top cover removed.

Input expansion

Input expansion (P1) may be accomplished by connecting a shielded cable between the first units SM1L to the second units output channel. The shield is to be connected to the AGND terminal. Follow the same procedure for the second and right channels. The above example provides 6 inputs, with the first units # 1 output.

NOTE: P1 may be accessed with the top cover removed.

Installation and Operation Manual

Broadcast Tools, Inc.

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Broadcast Tools, Inc.

3 x 2, Version C, Dual Stereo Audio Switcher

SPECIFICATIONS

MAX INPUT LEVELS: +27dbu, Active balanced, 20 k Ω .

OUTPUT LEVELS: Stereo balanced output 1 & 2, +24 dbu, < 100 Ω .

GAIN: 15db.

FREQ RESPONSE: 20 to 20 kHz; +/- .25 dB.

SIGNAL/NOISE RATIO: >85 dB nominal, unweighted, below +4dbu.

DISTORTION: Less than 0.01% THD at +24dbu.

CROSSTALK: -80 dB @ 1khz / -65 dB @ 10 kHz from adjacent off channel.

EXPANSION INPUT: Unbalanced summing inputs @ 10k Ω , 0 dbu.

SWITCHING METHOD: Sealed relays, utilizing 2-form-C Bifurcated-Crossbar

silver alloy with gold overlay contacts.

LOGIC: Microprocessor.

OPERATION CONTROL: Momentary and/or Sustained - Switches, Contacts,TTL/CMOS.

RS-232 - Serial 2400 baud, 8N1.

STATUS: Remote - Open collector. No serial status.

CONNECTORS: Audio - Rear panel screw style pluggable connectors. Mating connectors supplied.

Remote Control - Male 15 pin “D” connector, supplied.

RS-232 Serial - 6P4C Modular, Adapters & cable supplied.

POWER: 16 to 18 Vac @ 600 ma. 120 Vac 50-60 hz wall transformer.

Supplied. (240 Vac 50-60 hz optional)

MECHANICAL: 8.50" X 1.75" X 6.25" (WHD)

WEIGHT: 3.0 lbs.

MOUNTING: Optional RM-1 rack mount. Optional FP-1 filler panel

Installation and Operation Manual

Broadcast Tools, Inc.

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Broadcast Tools, Inc.

3 x 2, Version C, Dual Stereo Audio Switcher

LIMITED WARRANTY AND REMEDIES

LIMITED WARRANTY

The term “Buyer” as used in this document refers to and includes both (but only) (a) any person or entity who acquires such an item for the purpose of resale to others (i.e., a dealer or distributor of an item), and (b) the first person or entity who acquires such an item for such person’s or entity’s own use.

Broadcast Tools warrants to each Buyer of any item manufactured by Broadcast Tools that the item will be free from defects in materials and workmanship at the time its is shipped by Broadcast Tools if the item is properly installed, used and maintained.

EXCLUSIVE REMEDIES

If Broadcast Tools is notified of in writing of a failure of any item manufactured by Broadcast Tools to conform to the foregoing Limited Warranty within one (1) year following the date of the Buyer’s acquisition of the item, and if the item is returned in to Broadcast Tools in accordance with Broadcast Tools’ instructions for confirmation by inspection of the defect (which at Broadcast Tools’ election may include, without limitation, a requirement that the

Buyer first obtain a Return Authorization number from Broadcast Tools, that the Buyer furnish proof of purchase in the form of an invoice and/or receipt, and that the Buyer prepay all freight charges associated with any return of the item to Broadcast Tools using such freight service as Broadcast Tools reasonably may specify), Broadcast Tools will repair or replace the defective item, or will refund the purchase price paid by the Buyer for the item. Broadcast

Tools shall have the exclusive right to choose between these alternative remedies.

NO OTHER WARRANTIES OR REMEDIES

TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, BROADCAST TOOLS AND ITS SUPPLIERS

DISCLAIM ALL OTHER WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO

IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE; AND THE

FOREGOING ALTERNATIVE REMEDIES SHALL BE EXCLUSIVE OF ALL OTHER REMEDIES. THIS LIMITED

WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS. YOU MAY HAVE OTHER RIGHTS, WHICH VARY FROM

STATE/JURISDICTION TO STATE/JURISDICTION.

NO LIABILITY FOR CONSEQUENTIAL DAMAGES

TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, NEITHER BROADCAST TOOLS NOR ANY

OF ITS SUPPLIERS SHALL HAVE ANY LIABILITY FOR ANY SPECIAL, INCIDENTAL, INDIRECT,

CONSEQUENTIAL OR PUNITIVE DAMAGES WHATSOEVER (INCLUDING, WITHOUT LIMITATION, ANY

DAMAGES FOR LOST PROFITS, BUSINESS INTERRUPTION, LOSS OF DATA OR INFORMATION, COST OF

CAPITAL, CLAIMS OF CUSTOMERS, OR ANY OTHER PECUNIARY LOSS) ARISING OUT OF THE USE OF OR

THE INABILITY TO USE ANY ITEM SUPPLIED BY BROADCAST TOOLS), EVEN IF BROADCAST TOOLS HAS

BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES HAVE ANY LIABILITY FOR ANY SPECIAL,

INCIDENTAL, CONSEQUENTIAL, EXEMPLARY OR PUNITIVE DAMAGES. THIS LIMITATION OF LIABILITY

APPLIES WHETHER A CLAIM IS ONE ALLEGING BREACH OF A CONTRACT OR WARRANTY, NEGLIGENCE

OR OTHER TORT, FOR THE VIOLATION OF ANY STATUTORY DUTY, THE FAILURE OF ANY LIMITED OR

EXCLUSIVE REMEDY TO ACHIEVE ITS ESSENTIAL PURPOSE, OR ANY OTHER CLAIM OF ANY NATURE.

BECAUSE SOME STATES AND JURISDICTIONS DO NOT ALLOW THE EXCLUSION OR LIMITATION OF

LIABILITY FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES, THIS LIMITATION MAY NOT APPLY TO

YOU.

BROADCAST TOOLS, INC.

131 State Street

Sedro-Woolley, WA 98284

Voice 360 . 854 . 9559 Fax 360 . 854 . 9479

Installation and Operation Manual

Broadcast Tools, Inc.

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