Broadcast Tools SS 16.2 User manual

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.
Copyright, 1989 - 2005 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.
Firmware Version v 1.08
Manual Update: 7/1/2004
16 x 2 (SS 16.2)
Sixteen Input, Dual Output Stereo Switcher/Router
INC
®

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SS 16.2 Installation and Operation Manual
INTRODUCTION
INTRODUCTION
Thank you for your purchase of a Broadcast Tools, Inc., 16 x 2, Sixteen Input, Dual
Output Stereo Switcher/Router that we will refer to throughout the manual as the 16 x 2.
We’re confident 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.
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.
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SS 16.2 Installation and Operation Manual
DESCRIPTION
PRODUCT DESCRIPTION
The 16x2, sixteen input, dual output stereo switcher/router passively switches or
routes any one of 16 stereo inputs to either or both stereo outputs or vise-versa
through gold contact relays. The passive nature of the switching allows for any
input level and impedance to be used. Inputs may be balanced or unbalanced, while
output levels, impedance, distortion, noise and balancing will match that of the
selected input. In addition to their normal use with audio signals, the 16x2 can also
be used to switch digital signals and telephone lines. Control is via front panel
switches, contact closures, open collector status and/or multi-drop RS-232 port.
Removable screw terminals are provided for all audio connections.
The 16 x 2 has several unique features. The Power-Up feature allows the user to
select which of any source is active at power up, including the last source selected.
Audio mute allows the user to turn off either or both audio outputs when activated.
The Enable switch provides a safety lock to the front panel source selection switch-
es. Dual Audio Activity Monitor LED’s with remote status monitor the output audio
from either or both outputs. A Serial Port allows communication and operation from
a host computer’s serial port. 16 “PIP” TTL/CMOS compatible inputs and open col-
lector GPI ports allows the serial port monitoring of contact closures from satellite
receivers; tone decoders; etc; while the open collectors provide a means of control-
ling devices with commands from a host computer’s serial port. Source number one
is configured by default to route audio to both outputs in the case of loss of power
to the unit. Non-selected sources are terminated with 100K Ω, load resistors.
APPLICATIONS
Some of the applications of the 16 x 2 include: Studio selection and routing; Audio
processing selection; Exciter input selection; Remote broadcast input selection; STL
source selection; Automation source selection; EAS audio switching; ISDN or
Phone hybrid feed selection; IFB selection; Satellite audio channel switching and
console monitor inputs and outputs selection.
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SS 16.2 Installation and Operation Manual
DESCRIPTION
FRONT PANEL DESCRIPTION
SOURCE SWITCHES
Each switch represents an input to be routed to either or both of the outputs. High
quality tactile switches will give the user years of dependable service. Each switch
has an associated LED indicator, which will illuminate when that particular source
is routed to either or both of the outputs. When a source is selected, the previous
source will be deselected, (interlocked). The ENABLE switch, when enabled, must
be pressed and held in order for any of the source switches to function. This func-
tion may be bypassed. The front panel is also equipped with a MUTE switch. This
switch, when pressed in combination with the OP 2 and/or ENABLE switch, turns
off the output.
LEDS
LED indicators, which will illuminate when the desired channel is selected to out-
put one, slowly flash when to only output two and rapidly flash when to assigned to
both outputs. The Pwr/Ser LED displays valid power and serial data activity. The
mute LED denotes when audio is off. The respective activity LED’s light when
audio is present at the appropriate output.
REAR PANEL DESCRIPTION
The rear panel contains all input, output and remote control interfacing connectors.
Audio inputs and outputs are routed through pluggable screw terminals. Remote
control is accomplished via a 37 pin “D” connector. A modular jack is provided for
the multi-drop serial port.
POWER
Connect the 2.1mm coaxial type power connector into the unit and the 9 VAC
@ 500 ma wall transformer into a 120 Vac 50-60 Hz power source. The front panel
power LED indicates when power is applied to the unit. (220 Vac 50-60 Hz wall
transformer OPTIONAL)
AUDIO SIGNAL CONNECTOR
The 16 x 2 is supplied with Pluggable Screw terminals (Euro) and Mating connec-
tors. Channel and polarity designators can be found on the left side of the printed cir-
cuit board, as viewed from the rear.
“REMOTE” J3, CONNECTOR
The male 37 pin “D” connector is provided for connection to equipment, which will
remotely control the 16 x 2. Momentary contact closure to ground or active low
logic will satisfy all input functions.

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SS 16.2 Installation and Operation Manual
DESCRIPTION
INSTALLATION
Installation of the 16 x 2 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 16 x 2 as viewed from
the rear. It is recommended that all cables connected to the 16 x 2 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.
The 16 x 2 is simple to install. The signal inputs, outputs are connected via plug-
gable screw terminals. Installation of the 16 x 2 consists of six steps:
1. Inspection
2. Removal of the source termination resistors, if applicable
3. Bench test and option set-up
4. Mount the unit in a rack or desktop
5. Connect your equipment to the unit
6. Label the front panel switches
7. Serial operation, if applicable
STEP 1: INSPECTION
Please examine your 16 x 2 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 16 x 2, this
manual, 37 pin female D-connector/shell, 7 foot modular cable, 9 VAC @ 500 ma
transformer, modular cable, 9-pin D-Sub adapter and audio mating connectors.
STEP 2: SOURCE TERMINATION RESISTOR REMOVAL
Input sources that are not selected are terminated with a 100K Ω. If you do not want
this load applied across the deselected sources, it may be removed from each chan-
nel. Each channel has a pair of resistors.
• EXAMPLE: Channel 1, relays K1 A&B switches the signal; R15 & R21 are the
load resistors. As delivered, all channels are configured with these resistors
installed. To remove the load resistors from a channel, locate via the schematic the
proper resistors for that channel, cut its leads and discard the resistors.
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SS 16.2 Installation and Operation Manual
INSTALLATION
INSTALLATION Continued
STEP 3: BENCH TEST and OPTIONS
Place each unit on a workspace and connect power to the unit. Check to see if LED
#1 (Switch 1) and the Pwr/Ser 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(s). Verify that audio is present at both outputs. Repeat the process until each
channel’s operation has been verified.
OPTIONS
JP2 To enable the front panel “ENABLE” switch, place a jumper over JP2. The
Enable switch is disabled at the factory.
DIP Switches
3 OFF = Normal operations (Default)
3 ON = Front Panel programming. Use the front panel switches and LED’s.
4 = Not used
Pressing a button selects the option and stores it. The LED shows the state of the
option. When finished, initial channel settings can be selected by pressing button 16,
at which point the channel 16 LED stops flashing. Then using the front panel like
normal will have the same effects as normal, but will record those settings as the
startup settings. To exit this mode, turn off the unit, turn off Switch 3, then turn the
unit back on.
!TIP
The “ACT” LED’s are
also an audio output
indicator.
NOTE:
When the unit is in
“Programming” mode,
the “Channel 16” and
“Power” LED’s flash
rapidly. The current
settings are displayed
on their respective
LED’s.
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DIP (SW-2) Switch Functions
Unit ID SW2-1 SW2-2
ID 0 * OFF OFF
ID 1 ON OFF
ID 2 OFF ON
ID 3 ON ON
1 = 1200 Baud
2 = 2400 Baud
3 = 4800 Baud
4 = 9600 Baud Default
5 = 19200 Baud
6 = 38400 Baud
7 = OFF = Open collectors follow inputs (Latch) Default
ON = Open collector pulse for 1 sec
8 = OFF = Open collectors follow switch 7 rules Default
ON = Open collectors are software controlled.
9 = Set external inputs to act like front panel switches
10 = Set PIP Mode: Follow Inputs
11 = Set PIP Mode: stretch positive pulses to minimum 1/2 second

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SS 16.2 Installation and Operation Manual
INSTALLATION
INSTALLATION Continued
The 16x2 is a passive switcher. Any one of the 16 inputs may be assigned to either
or both outputs, but inputs can never be mixed.
1 To assign an input to output 1, press any one of the 16 input switches.
The associated LED will light.
2 To assign an input to output 2, press and hold the “OP 2” switch, then press
the desired input switch. The associated LED will flash slowly.
3 To select an input to both outputs, press the desired input switch, then press
and hold the “OP 2” switch followed by pressing the same input switch
once again. The associated LED will flash rapidly.
4 To mute any input routed to output 1, press the MUTE switch. NOTE: If
both outputs are muted, the mute LED will flash.
5 To mute any input routed to output 2, press and hold the MUTE switch;
then press the “OP 2” switch. NOTE: If both outputs are muted, the mute
LED will flash.
6 To mute both outputs, press the MUTE switch, then press and hold the
“OP 2” switch, and then press the MUTE switch. The mute LED will flash.
The Power Led is designed to light when power is valid. Its second job is to indi-
cate when serial data is sent or received. The third is to flash when the 16x2 is in
the “Programming” mode.
Serial Control
12 = Set PIP Mode: stretch positive pulses to minimum 1 second
13 = Set PIP Mode: stretch positive pulses to minimum of 2 seconds
14 = Set PIP Mode: stretch positive pulses to minimum of 4 second
15 = OFF = Allows selection of power up channel. Select after out of
programming mode. Default
ON = Selects “Last Source Selected”
16 = OFF (initial state) – switches 1-15 behave as above
Power LED Blinking – (final state) – input switches behave as if 3 were
off, but are recorded.
Pin out of the modular/D-Sub adapter is shown below.
RJ-11 Adapter.
Pin Number.
DB-9 Female. Pin
Number.
Product’s point of
view Function
Name.
4 3 RS-232 Receive
3 2 RS-232 Transmit
2 5 Ground

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SS 16.2 Installation and Operation Manual
INSTALLATION
INSTALLATION Continued
Modular connectors point of view.
Serial Burst Mode Commands
The unit is controlled via the Burst mode. The baud rates are selected on page 6.
The 16 x 2 may be serially controlled via the multi-drop RS-232 port. Commands
may be entered with 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 single decimal digit.
The device (ID) address (0-3) is specified on the on-board DIP switches. A burst
mode command must be entered within 5 seconds, or it will time out. No carriage-
return or line-feed is required to terminate the command except for those few com-
mands of variable length, if the maximum length is not sent. If the command
requests a response, the response will consist of an upper case “S”, followed by the
unit address, and then the specific response. If acknowledgements are enabled, suc-
cessful commands are responded to with “RRR”, while errors get an “EEE”
response. The syntax of each command is given below. The syntax shows the com-
mand exactly as it should be sent, except that lower case characters represent val-
ues that should be substituted.
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Glossary Of Command Notation
Character String Meaning Allowable Values
U Unit ID 0-7
Ii Input Number 01-16
O Output Number 1–2–A(ALL)
Rr Open Collectors 01-16

INSTALLATION Continued
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SS 16.2 Installation and Operation Manual
INSTALLATION
NOTE:
When the ID is set to
0 and the switcher is
configured for PIP,
any time a PIP input
changes, PIP status is
transmitted.
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NOTE:
When the ID is set to 0
and the switcher is con-
figured for PIP, any
time a front panel
switch is pressed, audio
status is transmitted.
Any ID other than 0
requires the unit to be
polled.
Audio Switch Control Commands
*uiio - Apply input “ii” to output “o”
*uiiA - Apply input “ii” to both outputs
*uiiMA - Mute input “ii” for all outputs
*uMo - Mute output “o”
*uMA - Mute all outputs
Serial string example: *1162 Address for unit 1, with input sixteen routed
to output two.
Output Collector Commands
*uORrrL - Latch open collector “rr”
*uORrrF - Unlatch open collector “rr”
*uORrrP - Pulse open collector “rr”
Miscellaneous Retrieval Commands
*POLL - Respond with unit (ID) address in appropriate time slot.
If there are multiple units on the line, each will respond
with a different delay after receipt of this command.
*uB1 - Turn on burst mode responses. A valid command will
result in response of “RRR”. Error will result in response
of “EEE”.
*uB0 - Turn off burst mode responses (default)
*uSL - Send Audio Status:
SuLo,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x<CR><LF>. “u” is unit ID,
“o” is output, and “x” is “1” for connected; “0” for not connected
for each respective input.
Thus “S1L2 ,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0<CR><LF> says that unit
1, output 2 is connected to input 1.
*uSPii - Send (PIP) status of programmable pulse stretcher input “ii”.
Response is “SuP,ii,x” where “x” is 1 if the corresponding input
is high, 0 otherwise.
*uSPA - Send (PIP) status of all programmable pulse stretcher inputs.
Response is “SuP,A,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x<CR><LF > where
input 0 is first and input 15 is last. “x” is 1 if the corresponding
input is high, 0 otherwise.
*uSR - Send status of all open collectors. Response is:
SuA,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x <CR><LF>
*uU - Send Unit Information:<name(16.2)><version(1.08)>< cr><lf

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SS 16.2 Installation and Operation Manual
INSTALLATION
STEP 4: MOUNTING
Mount the unit in a rack or desktop, allowing adequate airflow for cooling.
STEP 5: CONNECT YOUR EQUIPMENT
The 16 x 2 interfaces to your equipment (sources and loads) through the rear panel
pluggable screw terminals. Follow the legends for the desired audio input and out-
put 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 termi-
nal, 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.
STEP 6: DESIGNATION STRIP
The designation strip is provided in order to write the source descriptions under each
source switch.
STEP 7: SERIAL OPERATION
The supplied modular cable and 9 pin D-sub adapter may be connected to the
16 x 2’s rear panel modular connector. Plug in the D-sub adapter into your com-
puter’s serial port. Plug the supplied wall transformer into a source of 117 vac and
the cable end of the transformer into the power receptacle on the 16 x 2. The pro-
tocol is as follows: 1200, 2400, 4800, 9600, 19200, 38400, 8N1. Flow Control
should be NONE, emulation ANSI and the mode should be DIRECT TO COMx
(x = the available com port). The default is 9600,8,N,1.
Serial string example: *1162 Address for unit 1, with input sixteen routed to
output two.
REMOTE CONTROL CONNECTOR PINOUTS
J3 Remote Switch Pin numbers:
1 – Switch number 12 – Switch number 2
3 – Switch number 34 – Switch number 4
5 – Switch number 56 – Switch number 6
7 – Switch number 78 – Switch number 8
9 – Switch number 910 – Switch number 10
11 – Switch number 11 12 – Switch number 12
13 – Switch number 13 14 – Switch number 14
15 – Switch number 15 16 – Switch number 16
17 – Mute input 18 – Output 2 select
37 – Ground