Broadcast Tools DAS 8.4 Plus 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 - 2011 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 1.9
Manual Update: 07/07/2011
DAS 8.4 Plus
Eight Input, Four Output AES/EBU Digital Audio Routing Switcher
INC
®

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DAS 8.4 Plus Installation and Operation Manual
Table of Contents
Section Title Page #
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Who to Contact for Help . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Installation Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Setting Operation “Dip” Switches:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Power-Up Feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Macro Feature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Mounting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Power Supply Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Connecting Inputs/Outputs/Relays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Input Channel Expansion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Remote Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Serial Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Multicast Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Connecting the RS-232 Serial Port. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Serial Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Set-up Commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Output Port Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
“PIP” Connector Digital Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Schematic and Component Layout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Appendix
Installation Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Appendix
WEBSITE:
Visit our web site for
product updates and
additional information.
2
TABLE OF CONTENTS

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3
DAS 8.4 Plus Installation and Operation Manual
INTRODUCTION
INTRODUCTION
Thank you for your purchase of a Broadcast Tools® DAS 8.4 Plus, Eight Input, Four
Output Digital Audio Routing Switcher (referred to as the DAS 8.4 Plus throughout
this manual). We’re confident that this product will give you many years of depend-
able service. This manual is intended to give you all the information needed to
install and operate the Broadcast Tools® DAS 8.4 Plus.
SAFETY INFORMATION
Only qualified personnel should install Broadcast Tools® products. Incorrect or
inappropriate use and/or installation could result in a hazardous condition.
Broadcast Tools, Inc., is unable to support NON-Broadcast Tools software, hardware or
NON-Broadcast Tools computer/hardware/software problems. If you experience these
problems, please research your hardware/software instruction manuals or contact the man-
ufacturers 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 98284-1540 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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4
DAS 8.4 Plus Installation and Operation Manual
DESCRIPTION
Product Description
The Broadcast Tools DAS 8.4 Plus provides AES/EBU digital audio
routing/switching of any one of eight AES/EBU inputs to any/or all four AES/EBU
outputs. The DAS 8.4 Plus may be used in Multicast applications, where an AES
enabled EAS device assigned to input eight is routed to all four outputs via a con-
tact closure or serial command. When the alert/test is completed, the DAS 8.4 Plus
will return to its previous I/O configuration. The DAS 8.4 Plus may be controlled
via front panel switches, contact closures, 5-volt TTL/CMOS logic and/or the multi-
drop RS-232 serial port. The front panel is equipped with input and output selection
pushbuttons, output assignment LED’s, sample rate LED indicators and a headphone
amplifier with a front panel T/R/S/ jack and level control. Additional features: 96
KHz AES receiver, a 24-bit D/A converter with analog balanced stereo output, head-
phone amplifier and 16 x 16 GPIO port. Installation is simplified with plug-in
euroblock screw terminals. 1-RU chassis
Additional Features
• Routing type switching, any one input may be assigned to any/or all outputs.
• Multicast function and remote control port
• Logic functions via microprocessor and non-volatile memory
• Internal digital/analog audio activity/silence sensor monitors any one of four
output channels selectable with the front panel monitor switch. The unit is
equipped with four front panel sample-rate LED indictors, SS, AES/EBU
Digital Error and stereo 10-LED meters; adjustable analog Silence Sensor/AES
Digital error alarm delay and restore duration. Analog silence sensor sensitivi-
ty is factory set at -30db.
• Front panel input selection switches are provided for each input channel with
separate output indicator LEDs.
• Power-up selection of inputs to outputs, mute or last source selected.
• Eight user configured macros.
• Most configuration options via rear panel dipswitches.
• 16 input GPI port (Remote Control or PIP) with LED indicator.
• 16 open collector channel status outputs or programmable via burst commands.
• Remote control of front panel functions and status.
• Multi-drop RS-232 serial port with data activity LED.
• Multiple units may be looped-thru to expand outputs.
• Plug-in euroblock screw terminals for ALL connections.
• Multi-voltage power supply (220v CE, optional).

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5
DAS 8.4 Plus Installation and Operation Manual
DESCRIPTION
Front Panel:
The DAS 8.4 Plus is a 1 - RU device (19”w x 1.75”h x 10”d). The front panel
supports 15 selection switches and 43 LED indicators.
Rear Panel:
Installation is simplified with plug-in euroblock terminals. The DAS 8.4 Plus
may be pre-wired and installed in minutes. The multi-drop RS-232 modular con-
nection and a 7-pin DIN power connector are provided for the supplied multi-volt-
age power supply.
Switches:
Fifteen pushbutton switches (The “PGM” switch is hidden) that may be used to
mute or select input and output channels. Eight macros may also be programmed
and selected.
LED Indicators:
The DAS 8.4 Plus’s 43 front panel LED indicators provide operational display
of the following information:
• Four indicators per input channel display which output channel the input is con-
nected.
• Sample rate display of 32, 44.1, 48 and 96Khz
“PIP” Parallel Input Port active, indicating any change with the 16 input ports
• Monitored Output channel being monitored.
• Macro select LED indicator
• Silence sensor alarm LED
• AES/EBU sample rate led indicator
• AES/EBU digital “error” led indicator.
• Stereo, 10 LED meter.
• Unit power and serial data activity.
Controls:
AES Inputs:
Each of the eight AES inputs is supplied with an adjustable termination for 75
ohm, 110 ohm or no termination.
AES Outputs:
The DAS 8.4 Plus provides four selectable AES outputs.
WEBSITE:
Visit our web site for
product updates and
additional information.

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6
DAS 8.4 Plus Installation and Operation Manual
DESCRIPTION
AES/EBU Digital, Analog Audio and Activity Sensor.
The DAS 8.4 Plus contains an 8 - 96kHz AES receiver and 24-bit D/A convert-
er. The AES receiver may monitor any one of the four AES outputs with the front
panel monitor selector switch. The AES receiver provides data integrity information
to the microcontroller, which is used to indicate a data error. The D/A converter fur-
nishes a stereo feed to the balanced analog audio output amplifier, headphone ampli-
fier and level control, along with the stereo 10-LED meter and silence sensor cir-
cuitry. The factory default time delay and restore delay is set at 10 seconds, with a
fixed signal threshold of -30dB. Upon silence detection for the user-selected time,
the serial “SS/DIG Error” status is sent. When audio returns and the restore time
delay has expired, the serial “SS/DIG Error” status is sent. The “SS/DIG Error” may
be programmed for:
• Number of seconds of silence that must be present before an alarm state is
reached.
• Number of seconds of audio presence after an alarm state before the
“SS/AES/EBU “DIG Error” led illuminates.
PIP Input:
The Parallel Input Port (GPI) provides 16 pulse-stretched parallel 5-volt
TTL/CMOS compatible inputs. The inputs are pulled high to 5 volts through a
20KΩresistor and are activated by pulling the input to ground for a minimum of
40ms. These inputs supply status to any serial polling device (when the unit ID is
set to 0, no polling of inputs is required). For all PIP inputs a pulse of specified min-
imum input duration (000 to 2.55 Seconds) causes the status to go true until the end
of the input pulse. The pulse width may vary between the specified value and 10 ms
less than that value. This allows the polling computer more time to detect an input
change.
“Open Collector” Status Outputs, 16 Port Output Control
The DAS 8.4 Plus provides sixteen open collector status outputs. The status out-
puts may be configured to operate in one of three modes:
• The status outputs follow the first eight-associated channel.
• The status outputs a one-second pulse when the first eight-associated channel is
selected.
• RS-232 serial burst mode control

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7
DAS 8.4 Plus Installation and Operation Manual
DESCRIPTION
Serial Communication:
The DAS 8.4 Plus’s serial communication is configured for multi-drop RS-232,
allowing up to 8 - DAS 8.4 Plus’s on the same computers serial port. Burst mode
allows a computer or ASCII terminal to control and interrogate the unit. This section
defines all burst mode commands. Each burst mode commands starts with an aster-
isk (“*”). Next is a single decimal digit that corresponds to the unit (ID) address 0-
7. Following that are one or more ASCII characters specifying the command. 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 acknowl-
edgements 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 char-
acters represent values that should be substituted:
User Programming:
The DAS 8.4 Plus programming is stored in non-volatile memory.
Configurations are set with selection dipswitches and computer commands.
Inspection:
Please examine your DAS 8.4 Plus carefully for any damage that may have been
sustained during shipping. If any is noted, please notify the shipper immediately and
retain the packaging for inspection by the shipper. The package contains the DAS
8.4 Plus, Multi-voltage “Lump-n-Line power supply, plug-in euroblock screw ter-
minal mating plugs, Installation manual, reversed modular serial cable and the 9-pin
D-Sub (S 9) adapter.
Setting Operation “DIP” Switches:
The DAS 8.4 Plus is equipped with an 8-position “PGM” DIP Switch. The DIP
Switch specifies 3-bit unit ID, baud rate, power-up modes, remote control and other
features listed below. The dipswitch (SW16) is located on the rear panel.
DIP (SW16) Switch Functions
Switch Default
Number Setting Function
1 OFF Add 1 to Address (base address is 0)
2 OFF Add 2 to Address (base address is 0)
3 OFF Add 4 to Address (base address is 0)
4 OFF Baud Rate: OFF = 9600, ON = 38400
5 OFF Open Collector Operation Mode
6 OFF Open Collector Operation Mode
7 OFF Power up mode (Off = User programmable)
8 OFF PIP/Remote Control (Off = Remote Control)
WEBSITE:
Visit our web site for
product updates and
additional information.

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8
DAS 8.4 Plus Installation and Operation Manual
INSTALLATION
Installation Guidelines
Address (ID) DIP Switches
SW16-1 SW16-2 SW16-3 ID
OFF OFF OFF ID = 0
ON OFF OFF ID = 1
OFF ON OFF ID = 2
ON ON OFF ID = 3
OFF OFF ON ID = 4
ON OFF ON ID = 5
OFF ON ON ID = 6
ON ON ON ID = 7
Baud Rate DIP Switch
SW16-4 Function
OFF 9600 baud
ON 38400 baud
Open collector DIP Switch
SW16-5 Function
OFF Follow (See SW16-6)
ON Pulse (See SW16-6)
Open Collector Operation Switch
SW16-6 Function
OFF Enable SW16-5
ON OC’s software control
Power up/Last source DIP Switch
SW16-7 Function
OFF User Programmable
ON Last Source(s) selected
PIP/Remote Mode DIP Switch
SW16-8 Function
OFF Remote Control
ON PIP inputs enabled
Front Panel Switches
Switch(es) Function
01-08 Channel Inputs
OUTPUT 1,2,3,4 Output selector
MUTE Mutes selected channel
MACRO Selects up to 8 Macro’s
MONITOR Selects the four output channels to monitor

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9
DAS 8.4 Plus Installation and Operation Manual
INSTALLATION
Result
Selected input channel is connected to
output 1. To mute the active channel,
simultaneously hold down the mute
switch and press the desired input chan-
nel button.
Hold down the Output 2 button, then
push the desired input channel button
Selected input channel is connected to
output 2. To mute the active channel,
simultaneously hold down the mute
switch and press the desired input chan-
nel button.
Hold down the Output 3 button, then
push the desired input channel button
Selected input channel is connected to
output 3. To mute the active channel,
simultaneously hold down the mute
switch and press the desired input chan-
nel button.
Hold down the Output 4 button, then
push the desired input channel button
Selected input channel is connected to
output 4. To mute the active channel,
simultaneously hold down the mute
switch and press the desired input chan-
nel button.
Operation
Action
Hold down the Output 1 button, then
push the desired input channel button
Hold down the Output 2 button, then
push the desired input channel button
Hold down the Output 3 button, then
push the desired input channel button
Hold down the Output 4 button, then
push the desired input channel button
NOTE: To mute any/or all output
channels assigned to an input, hold
down the mute button and press the
desired input button.
WEBSITE:
Visit our web site for
product updates and
additional information.

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DAS 8.4 Plus Installation and Operation Manual
INSTALLATION
Power-Up Feature, user programmable:
To select a channel configuration at power-up:
1 - Verify that dipswitch SW16-7 is OFF.
2 - Select the desired input and output channel configuration.
3 - Press and hold the “MACRO” button.
4 - Press the “OUTPUT 1” button.
5 - The macro led will flash for 2 seconds.
6 - Release both switches.
7 - Your power up configuration is saved.
Power-Up Feature, last source selected:
1 - Verify that dipswitch SW16-7 is ON.
2 - The DAS 8.4 Plus will power up with whatever channel configuration was
present at power off.
Storing a Macro:
1 - Select the desired input and output channel configuration.
2 - Press and hold both the “MACRO” and “OUTPUT 2 buttons.
3 - Press the desired input channel button.
Example: Pressing channel 1 would store it as Macro 1.
Recalling a Macro:
1 - Press and hold the “MACRO” button.
2 - Press the desired stored macro’s using the input channel buttons.
Multicast Mode:
Verify that dipswitch SW16-8 is OFF. Connect the output of your AES enabled
EAS unit to AES input eight. Connect the sustained relay contacts of your EAS unit
between ground and remote control input 16 on the DAS 8.4 Plus. When the EAS
unit trips, the DAS 8.4 PLUS will switch AES input eight to all four AES outputs.
The four led’s associated with input eight will start to flash in sequence. When the
alert/test is completed, the relay contact of the EAS unit should open and the DAS
8.4 Plus will return to its previous I/O configuration. NOTE: You may also put the
DAS 8.4 Plus into Multicast mode via serial commands listed on page 16.
Note: To convert your EAS unit from analog audio to AES digital audio, check out
either of the Broadcast Tools Analog to Digital converters: ADCS-III or ADC-1
Mounting:
The DAS 8.4 Plus is designed to be rack mounted in a standard 19” rack, (1-RU).
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 DAS 8.4
Plus that you bench test and become familiar with the operation of the unit.

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11
DAS 8.4 Plus Installation and Operation Manual
INSTALLATION
Power Supply Connection:
Install the 7-pin DIN connector into the receptacle on the DAS 8.4 Plus. When
ready, plug the Lump-N-Line power supply cable into the appropriate AC receptacle.
ConnectingThe Digital Inputs,Outputs,PIP, remote control inputs and OC’s:
NOTE: Refer to the connection grid on page 17.
The DAS 8.4 Plus interfaces to your equipment are through plug-in euroblock
rear panel terminals. Refer to the supplied connection template. 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.
It is recommended that all cables connected to the DAS 8.4 Plus be looped
through ferrite cores to suppress RF. Surge protection with RF filtering such as the
Tripp Lite “ISOBAR 4” is also suggested for the power transformer. The purchase
of an inexpensive uninterruptible power supply (UPS) will provide back up in case
of power outages. Check out our web site for lightning protection links.
Remote Control:
Most front panel functions of the DAS 8.4 Plus may be remote controlled via
plug-in euroblock terminals located on the rear panel. The DAS 8.4 Plus accepts
momentary contact closures, open collector or 5-volt TTL/CMOS logic levels.
Open collector status is provided. Multicast mode requires a sustained contact
closure on remote input 16. NOTE: Refer to the connection grid on page 18.
Serial Interface:
The Serial Interface uses a multi-drop RS-232 transceiver.
CAUTION!
Installation of the DAS
8.4 Plus in high RF
environments should be
performed with care.
Shielded cable is sug-
gested for all control,
audio inputs and out-
puts. All shields should
be tied to the “CHAS-
SIS GROUND” termi-
nal. The station
ground should be con-
nected to the chassis
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.
WEBSITE:
Visit our web site for
product updates and
additional information.

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DAS 8.4 Plus Installation and Operation Manual
INSTALLATION
Front Panel Switches:
Switch(es) Function
1-8 Input Channels or Macros 1-8
Output 1 Output 1 selection
Output 2 Output 2 selection
Output 3 Output 3 selection
Output 4 Output 4 selection
Mute Turn off selected I/O
Macro Select any one of 8 Macros
Monitor Select Select any one of the four output channels. Sequences through each out-
put each time the switch is pressed.
Front panel LED indicators:
Front Panel LED’s # LED’s Activation Event/Mode Activation Behavior
Inputs connected toOutput 1 8 Green State of Connection On if connected
Inputs connected toOutput 2 8 Yellow State of Connection On if connected
Inputs connected toOutput3 8 Red State of Connection On if connected
Inputs connected toOutput 4 8 Red State of Connection On if connected
Power Status 1 Green Valid Power On
Monitor 4 Green Balanced output and Any one of four output channels
headphone monitor
Macro 1 Yellow Macro selection On if active
“PIP” Active 1 Green Any valid “PIP” input On if active
Stereo 10-LED Meter 20 assorted Audio Level Audio activity
SS 1 Red Analog Audio Silence On if stereo analog silence is detected
Sensor on the selected output.
Digital Error 1 Red Digital error On if a digital error is detected on the
selected output.
Sample-rate 4-colors Four sample rates Sample rate of input signal connected to
the monitored output.
Connecting the RS-232 Serial Port:
Use the provided modular 9-pin D-sub connector adapter (S9) and reversed
modular cord to connect the DAS 8.4 Plus’s serial connector to your serial port.
The pin out of the adapter is shown below.
RJ-11 DB-9 DAS 8.4 PLUS
Adapter Pin D-Sub (Point of view)
4 3 RS-232 Receive
3 2 RS-232 Transmit
2 5 Ground
Modular Jack Pin Numbers

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DAS 8.4 Plus Installation and Operation Manual
INSTALLATION
The DAS 8.4 Plus is supplied with a reversed modular cable and a 9-pin D-con-
nector modular adapter (S9) for serial control. Only use the reversed modular cord
that is supplied with the DAS 8.4 Plus or a replacement that reverses, such as Radio
Shack Cat No. 279347. Connect the cable between the DAS 8.4 Plus and your
computer. The DAS 8.4 Plus may operate at baud rates 9600 or 38400 baud. The
unit is shipped set for 9600 baud, with 8 data bits, no parity and one stop bit. Load
your favorite communication software package Windows 95/98/ME/NT/2000/XP
HyperTerminal, etc.) Using the protocol of 9600-N-8-1. Set the mode to: DIRECT,
Flow Control to: NONE and emulation to: ANSI.
Connecting Two DAS 8.4 Plus’s to a Single Computer’s Serial Port:
Multiple DAS 8.4 Plus’s may be cascaded serially to operate from the same seri-
al port. The first step is to assign unit ID’s to each DAS 8.4 Plus. One suggestion
is to assign 1 to the first DAS 8.4 Plus and 2 to the second switcher. The second step
is to parallel the serial ports of the DAS 8.4 Plus’s. Plug the male end of the duplex
modular 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 DAS 8.4 Plus
modular receptacles. See the diagram below. NOTE: Three or more DAS 8.4
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. It can run at the following
data rates:
• 9600 Default
• 38,400
Serial communications is multi-drop RS-232. Commands may be entered either
via a menu (menu mode) or a short form code (burst mode). All commands and
responses use normal ASCII characters, facilitating scripting. A burst mode com-
mand starts with an asterisk (“*”) followed by the device (ID) address as a single
decimal digit. A burst mode command must be entered within 5 seconds or it will
time out. The command to enter menu mode starts with an asterisk (“*”) followed
by the device (ID) address as a single decimal digit and then MM. The menu mode
displays certain parameters, and allows the setting of these parameters. In both
cases, device (ID) address (0-7) is specified with the on-board dipswitches.
WEBSITE:
Visit our web site for
product updates and
additional information.
To DAS 8.4 #1
To DAS 8.4 #2

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14
DAS 8.4 Plus Installation and Operation Manual
INSTALLATION
Type *0MM, follow the prompts on the pop-up menu.
Menu Mode:
The command to enter menu mode starts with an asterisk (“*”) followed by the
device (ID) address as a single decimal digit, then the MM command.
NOTE: Commands you type 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
(SW16) at the rear of the unit.
Broadcast Tools® DAS 8.4 Plus v 1.9 - Setup Menu
1 - Set PIP Minimum (0 - 2.55 sec) - Now: 0.02
2 - Set Remote Mode Open Collector Mode - Now: "Follow"
3 - Set Silence Sense Acquire Delay (sec) - Now: 10
4 - Set Silence Sense Restore Delay (sec) - Now: 10
A - Save Current Channel State for Power Up
C - Show Current Configuration
F - Set Factory Defaults
Enter Selection, or Q to quit:
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 com-
mands starts with an asterisk (“*”). Next is a single decimal digit that corresponds
to the unit (ID) address 0-7. Following that are one or more ASCII characters spec-
ifying the command. 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 the command requested 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, 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:

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DAS 8.4 Plus Installation and Operation Manual
INSTALLATION
Glossary Of Command Notation:
Character String Meaning Allowable Values
u Unit ID 0-7
ii Input Number 01-08
o Output Number 1,2,3,4
oo Open Collectors 01 – 16
Set-up Commands:
*uCCx Ignore, set by switches
*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.”
*CDEF Reset to factory defaults
*uCIIttt Set “PIP” Programmable Pulse Stretcher Input Duration = ttt:
000 – 255 Off to 2.55 Seconds.
*uCIOiittt Ignore, send OK
*uCLx Lock Front Panel if x is “L”. Unlock Front Panel if x is “U”
*uCRtt Set Open Collector Momentary Pulse Length – tt:00-99 for
00 – 9.9 Seconds
*uCSAtttt Set digital data error and/or silence sensor time delay to tttt
seconds (0002 – 9999), 0000 = OFF
*uCSBtttt Set digital data error and/or silence sensor restore delay to tttt
seconds (0002 – 9999), 0000 = OFF
*uCSDttt Ignore, send OK
*uCST Ignore, send OK
*uCSVttt Ignore, send OK
*uMCnn Save current audio state as Macro # nn (01 à 08)
*uMInn Invoke macro # nn (01 à 08)
*uMM Enter menu mode if unit ID = 0
*uMS Ignore, send OK
*uN Ignore, send OK
Real Time Control Commands:
*uDxx Delay xx seconds before processing next command.
*uZx Echo character “x” to serial control port. Useful in debugging
command strings
Open Collector Output Control Commands:
*uOOrrL Latch open collector “rr”
*uOOrrF Unlatch open collector “rr”
*uOOrrP Pulse open collector “rr”
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DAS 8.4 Plus Installation and Operation Manual
INSTALLATION
Channel Switch Control Commands:
*uiio Apply input “ii” to output
*uiiA Apply input “ii” to ALL outputs
*uiiMA Mute input “ii” for all outputs
*uiiMo Mute input “ii” for output “o”
*uMo Mute output “o”
*uMA Mute all outputs
Multicast Switch Control Commands:
*uEY Turn ON Multicast mode
*uEN Turn OFF Multicast mode
Information Retrieval Commands:
*POLL Respond with unit (ID) address in appropriate time slot. If there are mul-
tiple units on the line, each will respond with a different delay after
receipt of this command.
*uSA Ignore, Send OK
*uSL Send Channel 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. Thus “S1L2,1,0,0,0,0,0,0,0<CR><LF> says that unit 1,
output 2 is connected to input 1.
*uSO Send status of all open collectors,
SuSO,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,<CR><LF>
*uSPii Send 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 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 other-
wise.
*uSR Ignore, send OK
*uSS Send status of silence sensor (ACT x). Response is “SuS,a,b<CR><LF>“
1 1 = Active / 0 = Silent
*uU Send Unit Information:<name(DAS 8.4 PLUS)><version><cr><lf>
*uY Display configuration
“Open Collector” Status Outputs, 16 Port Output Control
The DAS 8.4 Plus provides 16 open collector status outputs. The status outputs may
be configured to operate in one of three modes:
• The status output follows the associated channel. SW16-5 OFF (SW16-6 must
be OFF).
• The open collector outputs a one-second pulse when the associated channel is
selected. SW16-5 ON (SW16-6 Must be OFF).
• Software control. SW16-6 ON. Note: SW16-6 OFF, enables SW16-5

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DAS 8.4 Plus Installation and Operation Manual
INSTALLATION
“PIP” with Programmable Pulse Stretcher:
If DIP Switch SW16-8 is ON, the Programmable Pulse Stretcher (PIP) provides
16 “PIP” (GPI) inputs. Each input must be 40ms or longer to be considered valid.
The Programmable Pulse Stretcher Duration may be globally set from 10ms to 2.55
seconds.
NOTE: When the unit ID is set to 0, no polling of “PIP” (GPI) inputs is
required.
Remote Control connectorTB-1
18-position double-decker connector on the rear of the switcher.
AES inputs TB2 (IN1), TB3 (IN2), TB4 (IN3), TB5 (IN4), TB6 (IN5), TB7 (IN6),
TB8 (IN7) and TB9 (IN8).
Pin 1 + Pin 2 - Gnd
AES outputs TB10 (OP 1), TB11 (OP 2), TB12 (OP 3) and TB13 (OP 4).
Pin 1 + Pin 2 - Gnd
Balanced stereo analog audio output TB14.
Left - Left + Gnd Right - Right +
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DAS 8.4 Plus Installation and Operation Manual
SPECIFICATIONS
Specifications
Audio Precision Test Equipment
Inputs: Level - 0.1Vp-p minimum
Eight - Transformer isolated, AES/EBU, selectable 75
ohm, 110-ohm or no termination for loop-thru operation.
Outputs: Four - Transformer isolated, AES/EBU, 110-ohm ter-
mination.
1 - Analog Headphone - 24 to 600 ohm. 75 mw peak.
Front panel 1/4” phone jack with level control.
1 - Analog - Balanced Stereo, +24dBm peak, +4dBm
nom. 100 ohm. 20 to 20kHz +/- .25dB. .01%.
Sample Rate / A/D: 8 to 96 kHz / 16 - 24 bit A/D.
Switching Method: Asynchronous digitally controlled multiplexers.
Logic: Microprocessor / Non-volatile memory.
Operation Control: Front Panel - Momentary push button switches.
Remote - Sixteen momentary closures to ground. >40ms.
RS-232 - Multi-drop Serial 9600 or 38.400 baud, 8N1.
Status: Front Panel - LED indicators.
Remote - Sixteen open collector outputs.
RS-232 - Multi-drop Serial 9600 or 38.400 baud, 8N1.
Interfacing: AES/EBU digital Audio & Remote Control - Rear
panel plug in euroblock terminals. Accommodates
16 - 28 AWG wire. Mating connectors supplied.
RS-232 Serial - RJ-11/6P4C Modular, female DB-9
adapter & cable supplied.
Power: Plus Version: 34.5 Vac/ct @ 500 ma / 10.5 Vac @
1 amp, 120 Vac 50-60 Hz “Lump in the line” power trans-
former. Supplied. (CE 240 Vac 50-60 Hz optional)
Mechanical: 19” x 1.75” x 10.0” (WHD) / Weight: 5.0 lbs.
Options: RS-232 to USB Smart Cable adapter.
ESS-1, ETHERNET to RS-232 /RS-422 converter.
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DAS 8.4 Plus 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
TOTHE MAXIMUM EXTENT PERMITTED BYAPPLICABLE LAW, BROADCASTTOOLSAND ITS SUPPLIERS DISCLAIMALL 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 DATAOR
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
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Functional Diagram
DAS 8.4 Plus
AES Digital Router Switcher
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Copyright © 1989-2006 by Broadcast Tools, Inc. All Rights Reserved.
Typical AES Input
Digital Error StereoHeadphoneOutput
96
48
44.1
32
Sample Rate Analog Output
Left Output
–
+
Right Output
–
+
Output Monitor Select
Modification Date: 11/13/06
VU Meter
1
* 75Ω – 110
or no
Termination Digital SW
2
3
4
AES OUT
Same for 2–8
Selected
Output
Monitor
Indicator
LT RT
1
2
3
4
24bit/
96KHZ
D/A
AudioActivity
Analog Silence Sensor
Serial/Power
Input to Output LED Indicators
1
2
3
4
CPU
Configure Switches
1–8 Input
Selection Switches
1–4 Output
Selection Switches
Mute Switch
Macro Switch
Remote Contact
Closure & Status/PIP
RS-232 Monitor/Control
External
Power Supply PS +15VDC
-15VDC
+5VDC