Broadcast Tools SS 2.1 BNC User manual

Installation and Operation Manual
PROBLEM SOLVED
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.
tiny TOOLS™ is a trademark of Broadcast Tools, Inc.
All Sentinel® labeled products are registered trademarks of Broadcast Tools, Inc.
Copyright® 1989 - 2012 by Broadcast Tools, Inc. All rights reserved.
No part of this document may be reproduced or distributed without permission.
Visit www.broadcasttools.com for important product update information.
Manual update: 09/04/2012
If you need a firmware upgrade, contact Broadcast Tools®
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
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SS 2.1 MLR/BNC
Switcher/Router with Mechanical Latching Relays
INC
®

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SS 2.1 MLR/BNC Installation and Operation Manual
Table of Contents
Section Title . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page #
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Who to Contact for Help . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Features/Benefits. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Surge Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
UPS standby power system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Installation/Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Selection push buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Led indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
I/O and Remote Control Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Remote Control Wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Relays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Configuration Jumpers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Configuration dip-switch setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Serial Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
RS-232 Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Serial commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Menu Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Front and rear panel drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Appendix
Fractional schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Appendix
Configuration jumpers and dip-switch layout . . . . . . . . . . . . . . . . . . . . . Appendix
WEBSITE:
Visit our web site for
product updates and
additional information.
2
CONTENTS

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SS 2.1 MLR/BNC Installation and Operation Manual
INTRODUCTION
INTRODUCTION
Thank you for your purchase of a BROADCAST TOOLS® SS 2.1 MLR/BNC trans-
parent two input, dual output switcher/router (referred to as the SS 2.1 MLR/BNC
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 need-
ed to install and operate the BROADCAST TOOLS®
SAFETY INFORMATION
Only qualified technical personnel should install Broadcast Tools products. Any
attempt to install this device by a person who is not technically qualified could result
in a hazardous condition to the installer or other personnel or damage Broadcast
Tools product or other equipment. Please ensure that proper safety precautions have
been taken before installing this device. If you are unfamiliar with this type of
equipment, please contact a properly qualified engineer to handle the installation
and setup of the Broadcast Tools product.
Broadcast Tools, Inc., is unable to support NON-Broadcast Tools software, hard-
ware or NON-Broadcast Tools computer/hardware/software problems. If you experience
these problems, please research your hardware/software instruction manuals or contact the
manufacturers technical support department.
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 98284-1503 USA
Voice: 360.854.9559
Fax: [phone]
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

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SS 2.1 MLR/BNC Installation and Operation Manual
OVERVIEW
Product Overview
The SS 2.1 MLR/BNC is a transparent two input, dual output switcher/router with
mechanical latching relays and BNC connectors. The SS 2.1 MLR/BNC is perfect
for all types of passive signal switching via front panel switches, contact closures
and/or serial RS-232. The switching is accomplished with mechanical latching gold
contact relays, which means that the unit can route a signal in either direction. Due
to the passive nature of the switching, any input level and impedance can be used.
Inputs may be balanced or unbalanced, while output levels, impedance, distortion,
noise and balancing will match that of the selected input. The SS 2.1 MLR/BNC can
be controlled and monitored locally and/or with simple contact closures to ground,
as well with multi-drop RS-232 serial commands.
Features/Benefits
• Front panel channel selection push buttons with active channel LED indicators.
• The audio “MUTE” function allows the user to turn off all audio.
• Front panel Enable switch can be configured to provide a safety lock to the front
panel selection push buttons.
• Remote control via contact closures, 5-volt TTL/CMOS logic levels and/or the
multi-drop RS-232 serial port. TCP/Telnet control/monitoring with our option-
al ESS-1, RS-232 to Ethernet adapter.
• Two SPDT relay outputs for remote channel status
• Audio/signal switching via mechanical latching sealed relays utilizing 2-form-C
bifurcated - crossbar silver alloy with gold overlay contacts.
• BNC connectors are used for audio or signal I/O connections, and removable
euro-block screw terminal connectors are used for remote control and status to
simplify wiring and service,
euroblock mating plugs are supplied.
• The power-up source selection feature allows the user to select which source is
active at power up, including the last source selected.
• If power is lost, the last selected channel is passed to the output.
• Fully RFI proofed.
• Surge protected internal power supply, domestic power supply provided.
Optional CE 240 Vac 50-60 Hz power supply available.
• Up to three units may be mounted on the optional RA-1 rack shelf. Desk top and
wall mounting is also possible.
Applications
Switching/routing applications include: Composite stereo audio, NTSC video signals,
Analog and/or AES audio sources, Studio selection, Audio processing selection,
Exciter input selection, STL source selection, EAS audio, RS-232, RS-422 or RS-485
data signals and telephone lines.
WEBSITE:
Visit our web site for
product updates and
additional information.

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SS 2.1 MLR/BNC Installation and Operation Manual
INSTALLATION
Inspection
Please examine your SS 2.1 MLR/BNC carefully for any damage that may have
been sustained during shipping. If any damage is present, please notify the ship-
per immediately and retain the packaging for inspection by the shipper. The pack-
age should contain the SS 2.1 MLR/BNC, a modular cable with 9-pin “S9” female
D-sub adapter, a 7.5 to 12 VDC wall transformer and a quick start guide. Manuals
may be downloaded from our web site.
Installation
Surge Protection
The SS 2.1 MLR/BNC has built-in resistance to voltage changes; we recommend
that you use a power surge protector or line conditioner on the incoming AC line.
Lightning strikes and/or other high voltage surges may damage your SS 2.1
MLR/BNC and connected equipment if it is not properly protected. For lightning
protection devices, check out www.polyphaser.com and www.itwlinx.com.
UPS Standby Power System
We recommend that you connect your SS 2.1 MLR/BNC to a UPS system. A UPS helps
minimize the risk to the SS 2.1 MLR/BNC and provides power during a power outage.
NOTE: If power is lost, the last selected channel is passed to the output.
Installation/Operation
Selection push buttons
Each push button represents an input to be routed to the switcher’s output, along
with the mute and enable push button. Each push button has an associated LED
indicator, which will illuminate when that particular channel or function is selected.
When a channel is selected, the previous channel is deselected (interlock). The
enable (safety) push button (the enable LED is illuminated when this function is
enabled) requires the user to hold down the enable push button while selecting any
of the other front panel push buttons.
LED indicators
• “PWR” LED: Illuminates when power is applied and blinks when serial data is
active.
• “Enable” LED: Illuminates when the front panel enable push button is enabled.
• “SS”: (silence sensor) operation and LED isn’t active on the BNC version.
• Channel and Mute LED’s illuminate when the input channel is selected.
Power
Connect the 2.1mm barrel type power connector into the unit and the 7.5 to 12 VDC
domestic power transformer into a 120 Vac 50-60 Hz power source. Never use any
type of power supply other than the specified/supplied power supply.

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SS 2.1 MLR/BNC Installation and Operation Manual
INSTALLATION
CAUTION!
Installation of the SS 2.1
MLR/BNC in high RF
environments should be
performed with care.
The station ground
should be connected to
the designated chassis
ground terminal using a
20 to 24-gauge wire.
WEBSITE:
Visit our web site for
product updates and
additional information.
I/O and Remote Control Connectors
The rear panel contains BNC connectors for I/O and removable screw terminals for
remote control interfacing with mating connectors. The multi-drop serial port is
equipped with a modular RJ-11 jack.
Remote Control Wiring
The SS 2.1 MLR/BNC interfaces to external equipment through removable
euroblock screw terminals. The terminals accommodate wire sizes from 16 - 28
AWG solid or stranded wire. Before installing a wire, remove the euroblock screw
terminal plug and turn each capture screw fully counterclockwise. Strip each con-
ductor to a length of 0.25” and insert the conductor fully into the terminal. Turn the
capture screw fully clockwise to secure the conductor.
Remote Control
The remote control connection to the switcher is via the bottom row of the connec-
tor TB4. Each channel may be selected by a momentary or sustained (depending on
the configuration) contact to ground. Each channel is pulled high (5-volts) through
a 22K resistor.
Relays
SPDT relay contacts are available on the top row of the remote control connector
TB4. K3 is associated with input channel one, while K4 is associated with input
channel two.
Note: K5 is not installed on the BNC version.
Note: For wiring information, refer to the grid below, silk-screen text on the
rear panel of the product or the fractional schematic(s) in the appendix.
Relay Outputs (Top Row, TB 4)
K3 N.O. K3 Common K3 N.C. K4 N.O. K4 Common K4 N.C.
SW-1 SW-2 SW-3 (Mute) GND N/A N/A
Control Inputs (Bottom Row, TB 4)
Configuration Jumpers
JP2: Not used on the BNC version
JP3: Disabled = Front panel enable switch defeated.
Enabled = Front panel ENABLE push button active.
The enable LED is illuminated.
NOTE: This push button must be held closed to operate any of the other front
panel push buttons and isn’t associated with any of the remote control functions.
JP4: Bypass = Bypasses R14, 75 ohm resistor. BNC output connector J3.
Enabled = Inserts R14, 75 ohm resistor.
JP5: Bypass = Bypasses R15, 75 ohm resistor. BNC output connector J4.
Enabled = Inserts R15, 75 ohm resistor.

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SS 2.1 MLR/BNC Installation and Operation Manual
INSTALLATION
Configuration DIP-switch Setup
Follow the tables below for configuration options.
Unit ID SW5-1 SW5-2
ID 0 * OFF OFF
ID 1 ON OFF
ID 2 OFF ON
ID 3 ON ON
Baud Rate SW5-3 SW5-4
2400 ON OFF
9600 * OFF OFF
19200 OFF ON
38400 ON ON
Power Up SW5-5
User selected ON
Last source selected* OFF
Note: To select an input at power-up with SW5-5 ON, hold down the push-but-
ton for the desired input channel or mute until the front panel LED’s flash.
Operation SW5-6 SW5-7
Normal * OFF OFF
Sustained ON OFF
Not Used OFF ON
Toggle ON ON
• Normal operation mode: Pulse 1-IN to select channel 1, Pulse IN-2 to select
channel 2, or pulse the “M-IN” (mute) pin to turn off both channels.
• Sustained operation mode: Hold IN-2 low to select channel 2.
• Toggle operation mode: Alternately pulse 1-IN to select between the two channels.
Note: After changing any dipswitch, please repower the unit.
Note: * Denotes factory setting.
SERIAL OPERATION
RS-232 Control
Connect one end of the modular cable to the RJ11 jack on the rear panel of the prod-
uct and the other end to the RJ11 to the jack on the “S9” 9-pin female D-sub adapter.
Connect the 9-pin female D-sub “S9” adapter to the COM port of the controlling PC.
Note: An optional USB to RS-232 adapter cable may be required if your PC isn’t
equipped with a RS-232 COM port. Select the desired address for each unit using
the configure DIP-switches. Never duplicate addresses. The default protocol is as
follows: 9600, N, 8, 1 (other baud rates are user selectable).

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SS 2.1 MLR/BNC Installation and Operation Manual
INSTALLATION
Serial Commands
The switcher may be controlled and monitored by burst serial strings or by the
embedded menu.
Where the < * > Denotes start of string character
< - > Unit ID (address, 0 through 3)
< i > Input channel (1, 2 or M (MUTE)).
*-i Switch to input i.
*-M Mute audio output (Turn Off Audio)
*-SL Send Audio Status: SuL1,x,x<cr><lf>
Note: x: 0 = OFF / x: 1 = ON
*POLL Display unit ID in appropriate time slot.
*U Enter menu mode
Examples: *02 This string would turn on channel 2.
*0M This string would MUTE the switcher’s output.
*0U Accesses the menu. (NOTE: The menu times out
after 60 seconds of keyboard inactivity).
Menu Operation
Broadcast Tools® SS 2.1MLR BNC, v1.9b - Setup Menu
S- Turn ON audio input
M- Turn OFF audio
V- Save Audio State for Power Up
C- Show Configuration and Status
F- Set Factory Defaults
Audio Status: Chan 1 On
Enter Selection, or Q to quit:
To select a menu function, simply enter the letter on the left side of the menu and
wait for the prompt.
Example: Type the letter S
Response: Enter Input Channel: Entering a 1 would select channel 1.

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SS 2.1 MLR/BNC Installation and Operation Manual
SPECIFICATIONS
SPECIFICATIONS
Inputs/Outputs: Any input level and impedance can be used. Inputs may be
balanced or unbalanced. Output levels, impedance, distor-
tion, noise and balancing will match that of the selected
input.
Switching Method: Passive. Mechanical latching sealed relays utilizing 2-form-
C bifurcated-crossbar silver alloy with gold overlay contacts.
Logic: Flash microprocessor with non-volatile memory.
Operation Control: Front Panel - Momentary switches.
Remote - Momentary or sustained, compatible with 5 volts
CMOS/TTL logic, open collector or contact closures to
ground.
Serial - Multi-drop RS-232, 2400, 9600, 19200, 38400
8,N,1.
Status: Front Panel - LED Indicators.
Remote - Two SPDT relays. 1-amp 30 vdc. Refer to the
fractional schematic and/or text on the rear panel for con-
nection details.
Interfacing: I/O - BNC
Remote control - Rear panel pluggable screw terminals.
Mating connectors supplied.
RS-232 - (RJ-11) Reversed modular cable/female “S9” 9-
pin D-Sub adapter supplied.
Power Requirements: 7.5 to 12 VDC @ >500 ma. 120 Vac 50-60 hz transformer
supplied.
Physical Dimensions: 5.65” x 7.10” x 1.575” (WDH)
Weight: 2.0 lb.
Shipping Weight: 3.0 lb.
Options: RA-1 rack shelf, holds three units (1-RU) / Filler panels
supplied.
(CE 240 Vac 50-60 Hz power supply optional)
WEBSITE:
Visit our web site for
product updates and
additional information.

10
SS 2.1 MLR/BNC Installation and Operation Manual
LIMITED WARRANTY
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 materi-
als and workmanship at the time it is shipped by Broadcast Tools if the item is properly installed, used and maintained.
EXCLUSIVE REMEDIES
If Broadcast Tools is notified, 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 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 MERCHANTABIL-
ITY 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 WHATSO-
EVER (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 • USA
360.854.9559 voice •866.783.1742 fax
suppor[email protected] e-mail
www.broadcasttools.com website
e-mail: [email protected] voice: 360.854.9559 fax: [phone]

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SS 2.1 MLR/BNC Installation and Operation Manual
APPENDIX
FRONT PANEL
REAR PANEL

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SS 2.1 MLR/BNC Installation and Operation Manual
12
APPENDIX

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SS 2.1 MLR/BNC Installation and Operation Manual
13
APPENDIX

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APPENDIX