Broadcast Tools ACS 8.2 Plus User manual

Installation and Operation Manual
Firmware Version 1.6 or above
Manual update 06/09/2017
Broadcast Tools® ACS 8.2 Plus
Eight Input, Dual Output Stereo Matrix Audio Control Switcher
INC
®
ALL SPECIFICATIONS AND FEATURES FOR THIS PRODUCT ARE SUBJECT
TO CHANGE WITHOUT NOTICE
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 - 2017 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.

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Broadcast Tools®ACS 8.2 Plus Eight Input, Dual Output StereoMatrix Audio Control Switcher
Table of Contents
Section Title Page #
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Who to Contact for Help . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Product Description/Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Function Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Installation Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Setting Operation “Dip” Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Power-Up Feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Mounting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Connecting Inputs/Outputs/Relays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Adjusting Input and Output Levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Calibrating VU meters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Input Channel Expansion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Remote Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Serial Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Connecting the Serial Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Burst/Set-up Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Connector Pin-outs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Output Port Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
“PIP” Connector Digital Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Component Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Appendix
2
CONTENTS

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3
Broadcast Tools®ACS 8.2 Plus Eight Input, Dual Output StereoMatrix Audio Control Switcher
INTRODUCTION
INTRODUCTION
Thank you for your purchase of a Broadcast Tools® ACS 8.2 PLUS EIGHT
INPUT, DUAL OUTPUT STEREO MATRIX AUDIO CONTROL SWITCHER
(referred to as the ACS 8.2 Plus 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®
ACS 8.2 Plus.
Broadcast Tools, Inc., is unable to support NON-Broadcast Tools hardware/software
or NON-Broadcast Tools computer hardware/software problems. If you experience
these problems, please research your hardware/software instruction manuals or
contact the manufacturer’s technical support department.
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 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 condi-
tion could result due to
failure.
NOTE:
This manual should be
read thoroughly before
installation and opera-
tion.
WEBSITE:
Visit our web site for
product updates and
additional information.

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4
Broadcast Tools®ACS 8.2 Plus Eight Input, Dual Output StereoMatrix Audio Control Switcher
DESCRIPTION
PRODUCT DESCRIPTION
The Broadcast Tools® ACS 8.2 Plus provides matrix audio switching of 8 stereo
inputs to 2 stereo plus 2 mono outputs. Any input assigned to output one has fading
capabilities. Matrix switching allows any/or all inputs to be assigned to any/or all
outputs. The ACS 8.2 Plus may be controlled via front panel switches, contact clo-
sures, 5-volt TTL/CMOS logic and/or the multi-drop RS-232 serial port (control via
USB or Ethernet with optional devices). Installation is simplified with plug-in
euroblock screw terminals.
PRODUCT FEATURES
• True matrix switching, any or all inputs may be assigned to any or all outputs.
Any input assigned to output one may be faded up, down or dimmed from either
the front panel, contact closures, 5-volt TTL/CMOS logic or the multi-drop RS-
232 serial port.
• Stereo LED VU meters with front panel output selection switch.
• Stereo headphone amplifier with front panel output selection switch, headphone
jack and level control.
• Internal silence sensors monitor both output channels. Each is equipped with
front panel LED indicators; separate SPDT SS alarm relays, adjustable alarm
delay and restore duration.
• Front panel input selection switches are provided for each input channel with
separate output indicator LED’s
• Power-up selection of inputs to outputs, mute or last source selected.
• 16 input GPI port (PIP or Remote Control) with LED indicator.
• Eight open collector channel status outputs or programmable via burst com-
mands.
• Eight SPDT relay outputs with multiplex function on output two. Programmable
via burst commands.
• Optional AGC function on each output channel.
• Logic functions via microprocessor and non-volatile memory
• Most configuration options via rear panel dipswitches.
• Multi-turn input and output level controls.
• Electronically balanced stereo inputs.
• Electronically balanced stereo and monaural outputs.
• Multi-drop RS-232 serial port with data activity LED.
• Multiple units may be cascaded to expand inputs.
• 1-RU chassis.

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5
Broadcast Tools®ACS 8.2 Plus Eight Input, Dual Output StereoMatrix Audio Control Switcher
DESCRIPTION
FUNCTION DESCRIPTION
Front Panel:
The ACS 8.2 Plus is a 1-rack unit device (19”w x 1.75”h x 10”d). The front panel
supports fourteen selection switches, 25 LED indicators, headphone and LED VU
meter output selection switch, headphone jack and headphone level control.
Rear Panel:
Installation is simplified with euroblock pluggable screw terminals. The rear panel
host’s audio and control plug-in euroblock screw terminals, input/output trimmers,
multi-drop RS-232 modular connector and 5-pin DIN power supply connector.
Switches:
The front panel of the ACS 8.2 Plus contains selection pushbuttons for each input
channel. A mute switch is provided to turn off each audio channel. Fade up, down
and dim push buttons are provided for inputs assigned to output one. A push-push
switch is furnished for both VU meter and headphone monitoring selection. Input
channels may be programmed for the following operations:
• Overlap (default) - Overlap one audio source with another while the button for
the second source is held down. Both channels will be fed to the output until the
second button is released, at which time the first audio source will be switched
off.
• Mix – Multiple inputs at a time to any given output - Push once to connect input,
press again while holding down the mute switch.
• Interlock - Connecting one input to any output disconnects all other inputs from
that output.
LED Indicators:
The ACS 8.2 Plus’s front panel LED indicators provide operational display of the
following information:
• LED indicators for each input switch displaying which output channel the input
is assigned.
• The mute indicator LED is lit when all channels are off.
• Two 10 - LED VU meters are selectable between output channels.
• Two “SS” LED’s indicating when an output channel has drop below –37db.
• “PIP” Parallel Input Port (GPI) active, indicating any change with the 16 input
GPI ports.
• “Pwr/Ser” LED which indicates valid power and will flash when the serial RS-
232 port is receiving or transmitting serial data.
• Optional AGC LED’s. Each output AGC module will drive two LED’s indicat-
ing above/below the target level.

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6
Broadcast Tools®ACS 8.2 Plus Eight Input, Dual Output StereoMatrix Audio Control Switcher
DESCRIPTION
Controls:
• Headphone and VU meter monitor switch to select which output channel is
monitored.
• Headphone jack
• Headphone level control
• Input, Output, Fade, Dim, Mute and Program push buttons
Audio Inputs:
Each of the 8 stereo inputs are balanced bridging (20KΩ) at a nominal line level of
+4dBu. Multi-turn level controls are provided for each channel.
Audio Outputs:
The ACS 8.2 Plus provides two selectable balanced stereo outputs. Two balanced
monaural outputs are also provided which follow their respective stereo outputs.
The stereo outputs are adjustable.
Stereo 10 – LED VU Meters:
The ACS 8.2 Plus contains LED VU meters selectable between the two output
channels.
Silence Sensors:
Each output channel has a detector that monitors the sum of each stereo channel.
The factory default delay is set at 10 seconds, with a threshold of -37 dB, while the
restore time is set at 10 seconds. Upon silence delay detection, the “SS-1 or SS-2”
SPDT relays close for the duration of the silence and the corresponding (SS-1 or SS-
2) LED is lit for duration of silence. Serial data is sent on either the loss or restora-
tion of audio. The sensor may be programmed for:
• Number of seconds of silence that must be present before an alarm state is
reached.
• Number of seconds that valid audio must be present before an alarm state is
cleared (Restore).
Remote Control (GPI) Inputs:
Most front panel functions may be controlled with the 5-volt TTL/CMOS logic com-
patible, contact closure inputs.
PIP (GPI) Inputs:
The Parallel Input Port provides 16 parallel 5-volt TTL/CMOS logic compatible GPI
inputs. The inputs are pulled high to 5 volts through a 20KΩresistor and are acti-
vated 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).

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7
Broadcast Tools®ACS 8.2 Plus Eight Input, Dual Output StereoMatrix Audio Control Switcher
DESCRIPTION
“Open Collector” Status Outputs, 8 Port Output Control
The ACS 8.2 Plus provides eight open collector status outputs. The status outputs
may be configured to operate in one of three modes:
• The status output follows the associated channel (multiplex applications).
• The status outputs a one-second pulse when the associated channel is selected.
• Software Control.
Relay Outputs, 8 Port Output Control:
The ACS 8.2 Plus contains 8 - SPDT 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 100msec to 9.9 seconds. The default pulse length is one-second.
8 SPDT relay outputs may be controlled by software. Each relay may be com-
manded to:
Multiplex “MPX” NON-software control. SW17-9 must be ON. Each relay fol-
lows the associated input channel selected to output two only.
WEBSITE:
Visit our web site for
product updates and
additional information.
Latch On Turns on and stays on (through power
failures) until turned off.
Latch Off Turns off and stays off (through power
failures) until turned on.
Momentary On Overrides latch; turns on for (default)
second, then latches off.

FUNCTION DESCRIPTION
* When assigned to output one only.
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8
Broadcast Tools®ACS 8.2 Plus Eight Input, Dual Output StereoMatrix Audio Control Switcher
DESCRIPTION
Front Panel Switches:
Switch(es) Function
8, 1 for each input Input Channel 1 - 8.
Mute when used w/ an input switch
Mute either or both outputs.
OP 2 Used to select any of the
inputs to output two.
Dim * Dim audio on the selected
input to a pre-programmed
amount.
Fade Up * Fade up the selected input audio channel 1 to a pre-
programmed time.
Fade Down * Fade down the selected input
audio channel to a pre-
programmed time.
Hidden “PGM” switch To program the configurations
ACS 8.2 Plus Front Panel switch operation
Action Result
Push any channel button. Channel is connected to output 1. To mute the
active channel, simultaneously hold down the
mute switch while pressing the input push button.
Press and hold the output 2
push button while selecting
any input button.
The input channel is connected to output 2.
To mute the active channel, simultaneously hold
down the output 2 and mute switch while
pressing the input push button.
Push any input channel while
holding down the “Fade up”
button.
The selected input will be faded up at the
selected rate on output 1 only.
Push any input channel while
holding down the “Fade
down” button.
The selected input will be faded down at the
selected rate on output 1 only.
Push any input channel while
holding down the “Dim” button. The selected input will be dimmed to the selected level on output 1 only.

FUNCTION DESCRIPTION
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9
Broadcast Tools®ACS 8.2 Plus Eight Input, Dual Output StereoMatrix Audio Control Switcher
DESCRIPTION
INSTALLATION GUIDLINES
Inspection:
Please examine your ACS 8.2 Plus carefully for any damage that may have been sus-
tained during shipping. If any is noted, please notify the shipper immediately.
Retain the packaging for inspection by the shipper. The package contains the ACS
8.2 Plus, power transformer, installation manual and a reversed modular serial cable
with a (S9) 9-pin D-Sub adapter.
User Programming:
The ACS 8.2 Plus programming is stored in non-volatile memory. Configurations
are set with selection dipswitches and menu or burst commands.
Setting Operation “DIP” Switches:
The ACS 8.2 Plus is equipped with a 10-position “PGM” (SW17) dipswitch. The
dipswitch specifies audio modes (mix, interlock, overlap), 2 bit unit ID, baud rate
and other features listed below. Access to this switch is near the front panel. Follow
the description below.
Front Panel LED’s (Left to Right):
Front Panel LED’s Number
Of LED’s
Activation Event/Mode Activation
Behavior
Inputs connected to
“OUTPUT 1” 8 Green State of Connection On if connected
to Output 1
Inputs connected to
“OUTPUT 2” 8 Red State of Connection On if connected
to Output 2
“Mute” 1 Red System Mute Status On when both output
channels are off.
Optional AGC
Output 1 1 Green
1 Red AGC Action Red if above, green
if below target level
Optional AGC
Output 2 1 Green
1 Red AGC Action Red if above, green
if below target level
“SS-1”, Silence Alarm
for output 1 1 Red Duration of Silence On if alarmed
“SS-2”, Silence Alarm for
output 2 1 Red Duration of Silence On if alarmed
“PIP” Pulse Active 1 Yellow Any valid GPI input
when enabled Flickers when a PIP is detected
“Pwr/Ser” Status 1 Green Valid Power and/or serial
data. On w/ valid power &
flickers w/ serial data.

INSTALLATION GUIDELINES
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10
Broadcast Tools®ACS 8.2 Plus Eight Input, Dual Output StereoMatrix Audio Control Switcher
INSTALLATION
DIP (SW-17) “PGM” Switch Functions
Switch
Number Default Setting Function
1 OFF Add 1 to Address (Default ID = 0 to access menu)
2 OFF Add2toAddress
3 OFF Baud rate (Default = 9600)
4 OFF Baud rate
5 OFF Stereo Audio Switching (Default = Overlap)
6 OFF Stereo Audio Switching
7 OFF Power up modes (Default = Save selection via “PGM” button)
8 OFF Open collectors in remote mode. (Default: Follow)
9 OFF Output 2 “MPX” mode
10 OFF Remote Control (Default) / PIP/GPI
Address (ID) DIP Switches
SW17-1 SW17-2 Mode
OFF OFF ID = 0
ON OFF ID = 1
OFF ON ID = 2
ON ON ID = 3
Baud Rate DIP Switches
SW17-3 SW17-4 Mode
OFF OFF 9600
ON OFF 2400
OFF ON 19200
ON ON 38400
Audio Switch Mode DIP Switches
SW17-5 SW17-6 Mode
OFF OFF Overlap
ON OFF Interlock
OFF ON Interlock
ON ON Mix

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11
Broadcast Tools®ACS 8.2 Plus Eight Input, Dual Output StereoMatrix Audio Control Switcher
INSTALLATION
INSTALLATION GUIDELINES
Power-Up Feature:
Refer to the DIP Switch SW17-7 to select which power up feature. If SW17-7 is
OFF, follow the steps below:
1 – Select the input/output configuration required at power up.
2 – Find the hole to the left of the “hdph lvl” knob and stick a non-metallic
object into the hole until you feel the switch engage.
3 – When the switch has been engaged, the 16 input LED’s will blink indi-
cating the power up selection has been programmed.
With SW17-7 ON, The last source selected will be remembered at power up.
WEBSITE:
Visit our web site for
product updates and
additional information.
Power up Mode DIP Switches
SW17-7 Function
OFF Front Panel “PGM”
Switch
ON Last Source
Selected
Open collector Mode DIP Switches
SW17-8 Function
OFF Open Collectors follow
inputs (OP-1)
ON Open collectors under
software control
Output 2 “MPX” Mode DIP Switches
SW17-9 Function
OFF Relays under software
control
ON Relays under “MPX”
mode (OP-2)
PIP/Remote Control Mode DIP Switches
SW17-10 Function
OFF Remote Control
ON PIP enabled

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12
Broadcast Tools®ACS 8.2 Plus Eight Input, Dual Output StereoMatrix Audio Control Switcher
INSTALLATION
INSTALLATION GUIDELINES
Mounting:
The ACS 8.2 Plus 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 ACS 8.2 plus,
you bench test and become familiar with the operation of the unit.
Power Supply Connection:
Install the 5-pin DIN power connector into the power receptacle on the ACS 8.2
Plus. 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 8 on the rear panel from left to
right. The ACS 8.2 Plus interfaces to your audio equipment through plug-in
euroblock 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, 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 opera-
tion, 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.
It is recommended that all cables connected to the ACS 8.2 Plus be looped through
ferrite cores to suppress RF. Surge protection with RF filtering is also suggested for
the power transformer. The purchase of an inexpensive uninterruptible power sup-
ply (UPS) will provide back up in case of power outages.
Adjusting Input and Output Levels:
Calibrating audio levels on the switcher and VU meters:
1 - Remove power from the unit.
2 - Remove the cover.
3 - Feed a reference signal into the selected input channel.
4 - Connect a Hi Z dB meter to the TEST jack TB9
5 - Reapply power.
6 - Adjust the left and right input to a zero level on your dB meter.
7 - Adjust the VU trimmers R126 (left) and R133 (right) for zero VU.
8 - Now the output trimmers may be used to set the desired output levels.
NOTE: The rest of the inputs may be adjusted.
CAUTION!
In no case should
either the + or - out-
puts be connected to
ground.
The input impedance
is 20K
Ω , 600 Ω termi-
nation may be installed
on the connector.
CAUTION!
Installation of the ACS
8.2 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 “CH
GND” terminal on
each channel. The sta-
tion ground should be
connected to the chas-
sis ground screw (CH1)
located behind J1 as
viewed from the rear.
For lightning protec-
tion devices, check out
www.polyphaser.com
and www.itwlinx.com.

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13
Broadcast Tools®ACS 8.2 Plus Eight Input, Dual Output StereoMatrix Audio Control Switcher
NOTE:
Find step by step
HyperTerminal setup
instructions at
www.broadcasttools.com
under downloads.
INSTALLATION
INSTALLATION GUIDELINES
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 (1/2 of
the balanced output). The shield should be connected to the ground terminal.
Follow the same procedure for the EXT +1 right channel. The above example pro-
vides 16 inputs, with the first ACS 8.2 Plus providing the main output.
Remote Control:
Most front panel functions of the ACS 8.2 Plus may be remote controlled via plug-in
euroblock screw connectors located on the rear panel. The ACS 8.2 Plus accepts
momentary contact closures, open collector or 5-Volt TTL/CMOS logic levels. Open
collector status/tally is also provided and follows the action of the front panel LED’s.
Refer to the connector layout on page 18 of this manual. If the ACS 8.2 Plus is to be
used as a switcher in an automation system, these same inputs (PIP) can monitor exter-
nal contacts and convert these contacts to serial strings used by most automation systems.
Serial Interface:
The multi-drop RS-232 transceiver is always in a listening mode unless selected or
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 and the
only way to access the menu.
Connecting the RS-232 Serial Port:
Use the provided modular (S9) 9-pin D-sub connector adapter and reversed modu-
lar cable to connect the ACS 8.2 Plus’s serial connector to your serial port.
The multi-drop RS-232 transceiver is always in a listening mode unless selected or
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 and the
only way to access the menu.

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14
Broadcast Tools®ACS 8.2 Plus Eight Input, Dual Output StereoMatrix Audio Control Switcher
INSTALLATION
INSTALLATION GUIDELINES
Serial Interface:
The ACS 8.2 Plus is supplied with a reversed 4 conductor modular cable and a (S9)
9-pin D-connector modular adapter for serial control. Only use the reversed mod-
ular cord that is supplied with the ACS 8.2 Plus or a replacement that reverses, such
as Radio Shack Cat No. 2790347. Connect the cable between the ACS 8.2 Plus and
your computer. The ACS 8.2 Plus may operate at baud rates from 2400 to 38400
baud. The unit is shipped set for 9600 baud, with 8 data bits, no parity and one stop
bit. Load Windows HyperTerminal using the protocol of 9600-N-8-1. Set the mode
to: DIRECT, Flow Control to: NONE and emulation to: ANSI.
Connecting Two ACS 8.2’s to a Single Computer’s Serial Port:
Multiple ACS 8.2 Plus’s may be cascaded serially to operate from the same serial
port. The first step is to assign ID’s to each ACS 8.2 Plus. One suggestion is to
assign 1 to the first ACS 8.2 Plus and 2 to the second switcher. The second step is to
parallel the serial ports of the ACS 8.2 Plus’s. Plug the male end of the duplex mod-
ular adapter into the supplied female (S9) DB-9 to RJ-11 adapter, then attach the
supplied reversed modular line cords into each of the duplex modular adapter recep-
tacles (Radio Shack Cat No. 279-0357) and the other ends into each ACS 8.2 Plus
modular receptacles. See the diagram below.
NOTE: Three or more ACS 8.2 Plus’s may be daisy chained by using the above
description and a Radio Shack Cat No. 279-0410, 5-jack modular adapter.
Serial Control:
The unit is controlled in either Menu or Burst mode. The ACS 8.2 can operate at the
following data rates:
2400; 9600 Default; 19,200; 38,400
Serial communications is multi-drop RS-232. Commands may be entered either via
a menu (menu mode for unit ID 0 only) or a short form code (burst mode). All com-
mands and responses use normal ASCII characters, facilitating scripting.
The pin out of the adapter is shown below.
RJ-11
Adapter
Pin
DB-9
D-Sub
ACS 8.2 Plus
(Point of view)
4 3 RS-232 Receive
3 2 RS-232 Transmit
2 5 Ground
1423
Modular Jack Pin
Numbers

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15
Broadcast Tools®ACS 8.2 Plus Eight Input, Dual Output StereoMatrix Audio Control Switcher
INSTALLATION
INSTALLATION GUIDELINES
Menu Mode:
The command to enter menu mode starts with an asterisk (“*”) followed by the
device ID (0, ONLY) address as a single decimal digit, then the MM command.
NOTE: Commands typed will NOT be seen, unless you turn “Echo ON” in
HyperTerminal. The menu mode displays advanced configuration parameters. Unit
ID, Baud rate and other configurations are set via the on-board dipswitches (SW 17)
at the front of the unit.
NOTE: The cover must be removed, to gain access to the Dipswitches.
Serial Burst Mode Commands:
Burst mode allows a computer or ASCII terminal to control and interrogate the unit.
This section defines all burst mode commands. Each burst mode command starts
with an asterisk (“*”). Next is a single decimal digit that corresponds to the unit (ID)
address 0-3. Following that are one or more ASCII characters specifying the com-
mand. No carriage-return or line-feed is required to terminate the command except
for those few commands of variable length, if the maximum length is not sent. If
acknowledgements are enabled, successful commands are responded to with “RRR”
while errors get an “EEE” response. The syntax of each command is given below.
The syntax shows the command exactly as it should be sent, except that lower case
characters represent values that should be substituted.
WEBSITE:
Visit our web site for
product updates and
additional information.
Broadcast Tools® ACS 8.2 Plus, v1.8 - Menu
1 - PIP Min 0-2.55 sec Now: 0.02 (sec)
2 - O.C. Mode Now: "Follow"
3 - SS Delay Time (sec) Now: 10
4 - SS Restore Time (sec) Now: 10
5 - Dim (DB) Now: -10
6 - Fade (sec) Now: 5
7 - Relay Pulse (sec) Now: 1.0

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16
Broadcast Tools®ACS 8.2 Plus Eight Input, Dual Output StereoMatrix Audio Control Switcher
INSTALLATION
INSTALLATION GUIDELINES
Set-up Commands:
*uMM - Open up Menu
*uC4x - Set RS-232 mode timings: x = 1, Turn ON RS-232 mode
NO delays on sending data. x = 0, Turn OFF RS-232 mode
(delay for RS-232 charge pump startup before sending
response, unless ID = 0).
*uCCx - Set Serial Speed. See dipswitch SW17-3 & 4.
*uCEx - Enable Error and Good Responses - Where x = Y to enable
and N = disable. In this mode, when a command is sent that
is in error, the unit will reply (possibly before receiving the
entire command) with “EEE.” If the command is sent cor-
rectly, the unit will reply with “RRR.”
*uCDEF - Set factory defaults.
*uCIIttt - Set “PIP” Programmable Pulse Stretcher Input Duration =
ttt: 000 –> 255 hundredths of seconds (255 = 2.55 Seconds)
*uCIOiittt - Ignore, send OK
*uCLx - Lock Front Panel if x is “L”. Unlock Front Panel if x is “U”
*uCPR - Power up audio state: Restore audio from power up state
*uCPS - Power up audio state: Save power up state
*uCRtt - Set Relay/OC momentary Pulse Length – tt: 00-99 for 00 –>
9.9 Seconds
*uCSAtttt - Set silence sensor time delay to tttt seconds (0002 – 9999),
0000 = OFF
*uCSBtttt - Set silence sensor restore delay to tttt seconds (0002 –
9999), 0000 = OFF
*uCSDttt - Ignore, send OK
*uCST - Ignore, send OK
*uCSVttt - Ignore, send OK
Glossary Of Command Notation:
Character String Meaning Allowable
Values
u Unit ID 0-3
ii Input Number 01-08
o Output Number 1-2
r Output Relay 1-8
r Open Collector 1-8

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17
Broadcast Tools®ACS 8.2 Plus Eight Input, Dual Output StereoMatrix Audio Control Switcher
INSTALLATION
INSTALLATION GUIDELINES
Relay and Open Collector Commands:
*uORrF - Unlatch output relay “r”
*uORrL - Latch output relay “r”
*uORrP - Pulse output relay “r”
*uOOoF - Unlatch open collector “o” (With DIPswitch 17-8 ON)
*uOOoL - Latch open collector “o” (With DIPswitch 17-8 ON)
*uOOoP - Pulse open collector “o” (With DIPswitch 17-8 ON)
Audio Switch Control Commands:
*uiio - Apply input “ii” to output “o”
*uiiA - Apply input “ii” to ALL outputs
*uiiEott - Start overlap – Apply input ii to output o. After tt tenths of
a second, remove all other inputs from output o.
NOTE: Only one at a time can be pending per output. Max time 9.9 seconds
*uE - End overlap if in overlap mode. This applies to all outputs
that have changed since the last “end overlap” command was
issued.
*uB,a,a,a,a,a,a,a,a - Sets inputs, ignoring mode: NOTE: Input commands
MUST be in CAPS.
- A = All “OUTPUTS” OFF
- B = Output 1
- C = Output 2
- D = Outputs 1 + 2
Example: *0B,B,C,D,A,A,A,A,A (Input 1 to output 1, Input 2 to output
2, Input 3 to both outputs, all other inputs are OFF.
*uii3 - For input “ii”, set output 1 on without affecting any other
audio status
*uii4 - For input “ii”, set output 2 on without affecting any other
audio status
*uii5 - For input “ii”, set output 1 off without affecting any other
audio status
*uii6 - For input “ii”, set output 2 off without affecting any other
audio status
*uFDnn - Fade down input nn. The speed is set via the menu.
*uFUnn - Fade up input nn. The speed is set via the menu.
*uDMnnd - DIM input channel nn to setting d.
1 = 3db, 2 = 6db, 3 = 10db, 4 = 15db, 5 = 20db.
Example: *0DM013 This would dim channel 01 on unit 0, 10db below set level.
*uiiMA - Mute input “ii” for all outputs
*uiiMo - Mute input “ii” for output “o”
*uMo - Mute output “o”
*uMA - Mute all outputs
WEBSITE:
Visit our web site for
product updates and
additional information.

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18
Broadcast Tools®ACS 8.2 Plus Eight Input, Dual Output StereoMatrix Audio Control Switcher
INSTALLATION
INSTALLATION GUIDELINES
Information 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.
*uSA - Ignore, Send OK
*uSL - Send Audio Status: SuLo,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. Example:
“S1L2,1,0,1,0,0,0,0,0<CR><LF> says that unit 1, output 2 is
connected to inputs 1 and 3.
*uSPii - Send single input (GPI) PIP status. Response is “SuP,ii,x”
where “x” is 1 if the corresponding input is high, 0 otherwise.
*uSPA - Send ALL input (GPI) PIP status. 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 correspon-
ding input is high, 0 otherwise.
*uSO - Send status of all Open Collectors. Response is:
SuO,x,x,x,x,x,x,x,x<CR><LF>
*uSR - Send status of all relays. Response is:
SuR,x,x,x,x,x,x,x,x<CR><LF>
*uSS - Send status of silence sensors. Response is “SuS,a,b
<CR><LF>
a = Output 1 / b is Output 2. 0 = Not silent, 1 = Silent.
*uU - Send Unit Information:<name(ACS
8.2C)><version><cr><lf
*uY - Display configuration
Real Time Control Commands:
*uDxx - Delay xx seconds before processing next command.
*uDLxxx - Delay xxx seconds before processing next command.
*uZx - Echo character “x” to serial control port. This is useful in
debugging command strings.
WEBSITE:
Visit our web site for
product updates and
additional information.

INSTALLATION GUIDELINES
NOTE: Refer to the assembly drawing in the appendix for all rear panel connectors
and trimmers.
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19
Broadcast Tools®ACS 8.2 Plus Eight Input, Dual Output StereoMatrix Audio Control Switcher
INSTALLATION
Audio and remote connections:
TB 1 --> TB 4
EVEN
Inputs Top Row
Input x – Left Input x + Left Gnd Input x – Right Input x + Right
Input x – Left Input x + Left Gnd Input x – Right Input x + Right
ODD Inputs Bottom Row
TB 5 Output Two Top Row
Output 2 – Left Output 2 + Left Gnd Output 2 –
Right Output 2 + Right
Output 1 – Left Output 1 + Left Gnd Output 1 –
Right Output 1 + Right
Output One Bottom Row
TB 6 Monaural Output Top Row
Output 1 – Output 1 + Gnd Output 2 – Output 2 +
Ext 1 Input Left
+Ext 1 Input Right +Gnd Ext 2 Input Left +Ext 2 Input Right +
External (Expansion) Inputs Bottom Row
TB 7 The bottom connector has two functions, depending on the position of SW17-10
Left hand 16-position connector on the rear of the switcher.
K1
N.O. KI Com K1 N.C. K2 N.O. K2 Com K2 N.C. K3 N.O. K3 Com K3 N.C. K4 N.O. K4 Com K4 N.C. K5 N.O. K5 Com K5 N.C. Gnd
Top
Row
PIP1 Gnd PIP2 PIP3 Gnd PIP4 PIP5 Gnd PIP6 PIP7 Gnd PIP8 PIP9 Gnd PIP10 PIP11
SW17-
10 ON
Bottom
Row
In 1
to 1 Gnd In 2
to 1 In 3 to 1 Gnd In 4
to 1 In 5 to 1 Gnd In 6
to 1 In 7 to 1 Gnd In 8
to 1 Pgm Gnd Mute Sel
OP-2
SW17-
10 OFF
Bottom
Row

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20
Broadcast Tools®ACS 8.2 Plus Eight Input, Dual Output StereoMatrix Audio Control Switcher
INSTALLATION
INSTALLATION GUIDELINES
Remote Control operation:
To select input one to output one, bring In1 to Op1 to Gnd.
To select In1 to Op2, bring OP-2 to Gnd, then bring In1 to Op1 to Gnd.
NOTE: Dipswitch SW17-10 must be OFF.
NOTE:
Non-mechanical latch-
ing relays. When
power is removed, each
relay will open. When
power is restored, each
relay will return to the
pre-power failure state.
NOTE:
In burst mode, momen-
tary timing on each
relay can be set from
.1 to 9.9 seconds.
TB 8 The bottom connector has two functions, depending on the position of SW17-10
Right hand 16-position connector on the rear of the switcher.
K6
N.O. K6 Com K6 N.C. K7 N.O. K7 Com K7 N.C. K8 N.O. K8 Com K8 N.C. SS-1 N.O. SS-1 Com SS-1 N.C. SS-2 N.O. SS-2 Com SS-2 N.C. Gnd
Top
Row
Gnd PIP12 PIP13 Gnd PIP14 PIP15 Gnd PIP16 OC1 OC2 OC3 OC4 OC5 OC6 OC7 OC8 SW17-10
ON
Bottom
Row
Gnd Dim Fade
Up Gnd Fade Down Open Gnd Open OC1 OC2 OC3 OC4 OC5 OC6 OC7 OC8 SW17- 10 OFF
Bottom
Row