Broadcast Devices, Inc.
Technical Reference Manual
ACS-300 Audio Control System
Broadcast Devices, Inc.
5 Crestview Avenue
Cortlandt Manor, NY 10567
Tel. (914) 737-5032
Fax. (914) 736-6916
World Wide Web: www.Broadcast-Devices.com
Rev A. 12/04
2
Table of Contents
I. Introduction
3
II. Unpacking
3
III. Installation and Connections
3
IV. Features and Operation
3
V. Remote Control Status Pin out
4
VI. Specifications
5
VII. Warranty
6
VIII. Schematic Diagrams
7-10
3
I. Introduction
The ACS-300 Audio Control System comprises of six balanced inputs and six balanced outputs for
which the input level can be dimmed by 10, 20, or 30 dB upon remote control command. In addition, the
unit can be commanded to mute all channels or any one of six channels upon separate remote control
commands. The ACS-300 is intended for radio, television and recording control rooms for which
control/muting of up to six channels that are normally fed to a monitor amplifier system. The ACS-300 is
particularly suited for use with Dolby Digital, Dolby Surround and/or DTS multi channel sound systems.
The front panel of the ACS-300 has six channel active LEDs in addition to Dim and Mute status. All
control of the unit is accomplished by remote control through simple switch closure or through a
companion accessory remote control box available from BDI.
II. Unpacking and Inspection
Carefully inspect the unit after unpacking and make certain that no damage has occurred during shipping.
If damage is noted, contact the shipper immediately and file a claim for damages. Each unit is carefully
packed and carries full insurance against damage. Inspect the packing list and make sure that the contents
of the package match those described on the packing list.
III. Installation and Connections
Before installing the unit it is a good idea to decide what input sensitivity you would like the unit to have
and to decide how much dimming the unit should provide. The unit can be configured in a variety of ways.
Each channel input can be configured to accept a balanced +4, 0, or -10 dBm nominal signals. Simply
remove the cover and place the jumpers in the desired positions. Factory default is +4 dBm nominal input
on each channel. Next, locate the dimmer sensitivity jumpers and select the desired amount of dimming. 30, -20 and -10 dB of dimming is available to any channel. If no dimming is desired on a particular group
of channels, simply remove the dimming jumpers from the desired channels. Factory default is – 20 dB on
all channels.
IV. Features and Operation
The ACS-300 Audio Control System is designed to control up to six audio channels to
Remote control and remote status of the unit is accessed through the rear panel 15 pin D connector.
Simple ground closure to the appropriate pin will command the unit to dim or mute as long as the closure is
maintained. The ACS-300 supplies +5 V.D.C. for powering open collector actuators.
4
V. Remote Control/Status DB15 pin connections
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Remote Mute Channel 1
Remote Mute Channel 2
Remote Mute Channel 3
Remote Mute Channel 4
Remote Mute Channel 5
Remote Mute Channel 6
Remote Mute All Channels
Remote Dim All Channels
NC
NC
NC
NC
Ground
Remote Mute Status
Remote Dim Status
5
VI. Specifications
Inputs:
Six - -10, 0, or +4 dBm balanced bridging nominal
any input
Outputs:
Six – +4 dBm balanced 600 ohms
Frequency Response:
+/- 0.2 dB from 20 Hertz to 20 KHz
Total Harmonic Distortion:
less than .05% any channel at any frequency
Maximum Output level:
+18 dBm
Mute Isolation:
70 dB or greater all channels from 20 Hertz to
20 KHz
Remote Control:
Maintained ground closure selects mute or dim
function
Remote Status:
Active low ground, +5 VDC inactive TTL
compatible
Front Panel Indicators:
Mute, Dim and six channel active indicators
Power Requirements:
120/240 V.A.C. @ 0.25A; 50 – 60 Hz.
Operating Environment:
0 – 60 Degrees Celsius Non Condensing Atmosphere
Physical:
19”W X 8”D X 1.75”H Mounted via Standard E.I.A.
19” rack one rack unit occupied. Weight: 9 LBS.
6
VII. Warranty
Broadcast Devices, Inc. products are warranted against failure due to faulty materials or workmanship for
a period of one year from the date of shipment to the ultimate user. The warranty covers repair or
replacement of defective parts at the factory, provided the unit has been returned prepaid by the user. All
shipments to the factory shall have affixed to the outside of the container an R. A. number obtained from
the factory. The above warranty is void if the unit has been modified by the user outside of any
recommendations from the factory or if the unit has been abused or operated outside of its electrical or
environmental specifications. If customer conducted field tests suggest that the unit may be faulty, whether
or not the unit is in warranty, a full report of the difficulty should be sent to Broadcast Devices, Inc. factory
at Cortlandt Manor, New York. The office may suggest further tests or authorize return for factory
evaluation.
Units sent to the factory should be well packed in the original packing if possible and shipped to
Broadcast Devices, Inc. 5 Crestview Avenue, Cortlandt Manor, NY 10567. Remember to affix the R.A.
number to the outside of the carton. Any packages received without such R.A. number will be refused.
Note: freight collect shipments will also be refused. When the unit has been received, inspected and tested,
the customer will receive a report of the findings along with a quotation for recommended repairs, which
are found falling outside of the standard warranty. Units returned for in-warranty repairs which are found
not to be defective will be subject to an evaluation and handling charge. In-warranty units will be repaired
at no charge and returned via prepaid freight.
Out-of-warranty units needing repair require a purchase order and will be invoiced for parts, labor, and
shipping charges.
When ordering replacement part, always specify A) Part number or Description, and Quantity; B) Date of
Purchase, Where Purchased; C) Any Special Shipping Instructions. Always specify a street address, as
shipping companies cannot deliver to a postal box.
Broadcast Devices, Inc. is not responsible for any other manufacturer’s warranty on original equipment.
Nor are we responsible for any failure, damage, or loss of property that may occur due to the installation or
operation of our equipment outside of recommended specifications.
Broadcast Devices, Inc. may from time to time make changes to the materials used in the manufacture of
its equipment and reserves the right to do so without further notice.
7
VIII. Schematic Diagrams
3
R3
10.0K 1% MF
6
4
5
10uF 25V
2
NE5532AD8
1
3
2
R9
10.0K 1% MF
R10
10.0K 1% MF
100 1% MF
.1
R11
10.0K 1% MF
2.2K 1% MF
1N4148
DS1
C2
4.7uF 25V
U1B
LED
7
2
9.1K 1% MF
R5
R8
10.0K 1% MF
.001
C3
+
1.3K 1% MF
R6
100.0K 1% MF
1
R4
CR1
-12V
-
C4
C1
+
JMPR-3X2
D
R2
R1
2.2K 1% MF
R7
JP1
2
1
4
-
5
D
NE5532AD8
U1A
3
8
.1
R13
C6
.001
10.0K 1% MF
C7
R12
10.0K 1% MF
C8
C5
1
4
J1
R14
+12V
10uF 25V
L1
FB
C9
200pF MICA
27R
-12V
1
SW1 A
R25
C18
150
27R
R27
470
R29
2.2K
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C20
JP3
+12V
R30
10.0K 1% MF
JMPR-3X2
2
R33
FB
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3
10uF 25V
NE5532AD8
1
R28
C21 10.0K 1% MF
R31
R32
B
L4
3
FB
U4A
10.0K 1% MF
200pF MICA
27R
C22
8
DIM
.1
2
R26
L3
R34
10.0K 1% MF
C23
6
5
.1
J3
NE5532AD8
7
4
SW4 A
R24
10.0K 1% MF
200pF MICA
20
19
AGND
SW4 B
18
V+
17
SW4 CTL
4
8
10uF 25V
MUTE2
JP4
U2B
U3
SSM2404P
4
-12V
B
16
SW3CTL
15
SW3B
V14
13
10uF 25V
5
.1
J2
NE5532AD8
7
1
3
4
5
6
7
8
2
AGND
SW1 B
DGND
SW1 CTL
SW2 CTL
NC
SW2 B
9
10
11
.1
AGND
C17
-12V
C19
C13
6
+12V
C16
10uF 25V
AGND
SW3 A
DGND
.1
12
C15
AGND
SW2 A
+12V
2.2K
27R
C12
+
-12V
EARTH
R23
JMPR-3X2
C
200pF MICA
-
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C14
+
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3
10.0K 1% MF
-
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470
L2
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U2A
JP2
R22
R19
1
R21 10.0K 1% MF
R15
C11 10.0K 1% MF
R18
+
150
2
3
+
R20
C
NE5532AD8
1
R17
10.0K 1% MF
-
MUTE1
10uF 25V
2
-
R16 10.0K 1% MF
.1
4
C10
DIM
U4B
+12V
R35
10uF 25V
C24
3
NE5532AD8
1
U5A
R41
CR2
100 1% MF
3
R42
10.0K 1% MF
8
C28
R46
C29
.001
6
10.0K 1% MF
C30
.1
5
1
4
J4
+12V
1N4148
R43
A
1
R45
10.0K 1% MF
10uF 25V
2.2K 1% MF
DS2
C27
4.7uF 25V
U5B
{}
Broadcast Devices, Inc.
LED
Title
7
ADS-200
2
4
9.1K 1% MF
2.2K 1% MF
R38
2
R44
10.0K 1% MF
A
2
+
R40
10.0K 1% MF
.1
-
R36
C25
+
R39
10.0K 1% MF
.001
-12V
-
JMPR-3X2
C26
1.3K 1% MF
R37
100.0K 1% MF
NE5532AD8
Size
B
10uF 25V
Date:
5
4
3
2
Document Number
Thursday, December 09, 2004
Rev
B
Sheet
1
1
of
4
3
R49
10.0K 1% MF
6
4
5
10uF 25V
2
NE5532AD8
1
3
2
R55
10.0K 1% MF
R56
10.0K 1% MF
100 1% MF
.1
R57
10.0K 1% MF
2.2K 1% MF
1N4148
DS3
C32
4.7uF 25V
U6B
LED
7
2
9.1K 1% MF
R51
R54
10.0K 1% MF
.001
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+
1.3K 1% MF
R52
100.0K 1% MF
1
R50
CR3
-12V
-
C34
C31
+
JMPR-3X2
D
R48
R47
2.2K 1% MF
R53
JP5
2
1
4
-
5
D
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8
.1
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10.0K 1% MF
C37
C38
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4
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R58
10.0K 1% MF
R60
C39
27R
+12V
10uF 25V
200pF MICA
L5
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2.2K
6
5
1
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10uF 25V
150
R73
470
R75
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R76
10.0K 1% MF
JMPR-3X2
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2
R79
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3
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1
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B
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3
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10.0K 1% MF
200pF MICA
27R
C52
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10.0K 1% MF
C53
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R74
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R77
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8
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JP8
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2
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6
5
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7
4
SW4 A
27R
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20
19
AGND
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18
V+
17
SW4 CTL
R71
C48
4
-12V
B
16
SW3CTL
15
SW3B
V14
13
10uF 25V
R70
10.0K 1% MF
1
3
4
5
6
7
8
2
AGND
SW1 B
DGND
SW1 CTL
SW2 CTL
NC
SW2 B
9
10
.1
11
C49
AGND
SW2 A
-12V
AGND
C47
U7B
U8
SSM2404P
C46
10uF 25V
AGND
SW3 A
DGND
.1
12
C45
+
+12V
.1
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-
-12V
EARTH
C43
JMPR-3X2
+
-12V
C44
J6
NE5532AD8
7
4
R69
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-
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C
200pF MICA
10.0K 1% MF
+12V
L6
3
10.0K 1% MF
8
470
R65
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U7A
JP6
R68
2
3
1
150
R61
C41 10.0K 1% MF
R64
+
R66
R67
+
C
NE5532AD8
1
R63
10.0K 1% MF
-
MUTE3
10uF 25V
2
-
R62 10.0K 1% MF
.1
4
C40
DIM
U9B
+12V
10uF 25V
C54
3
NE5532AD8
1
U10A
R87
CR4
100 1% MF
3
R88
10.0K 1% MF
8
C58
R92
C59
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6
10.0K 1% MF
C60
.1
5
1
4
J8
+12V
1N4148
R89
A
1
R91
10.0K 1% MF
10uF 25V
2.2K 1% MF
DS4
C57
4.7uF 25V
U10B
{}
Broadcast Devices, Inc.
LED
Title
7
ADS-200
2
4
9.1K 1% MF
2.2K 1% MF
R84
2
R90
10.0K 1% MF
A
2
+
R86
10.0K 1% MF
.1
-
R82
C55
+
R85
10.0K 1% MF
.001
-12V
-
JMPR-3X2
C56
1.3K 1% MF
R83
100.0K 1% MF
NE5532AD8
Size
B
10uF 25V
Date:
5
4
3
2
Document Number
Thursday, December 09, 2004
Rev
B
Sheet
1
2
of
4
5
4
3
2
1
R139
CR7
+5V
U16
LM337
2
1N4007
C96
2
C92
4700uF 50V
Vo
C93
.1 50V
470
L13
3
D
.1 50V
HDR3
U17B
REM-MUTE1
4
FB
R140
150 1/2W
CR9
C94
1N4007 .1 50V
C95
3300uF 25V
D
470
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4.7uF 50V
1.3K 1/2W
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REM-MUTE2
1N4007
C99
10
FB
U19
LM317
+12V
Vo
C102
.1 50V
.1 50V
R145
150 1/2W
CR13
C103
1N4007 .1 50V
C107
R146
1.3K 1/2W
-12V
6
5
3
MUTE3
DIM
2
U18A
74LS00
74LS08
R147
U18B
470
L17
CR15
C111
.1 50V
11
C109
.01
12
C
2
5
MUTE4
470
LED
74LS00
U17D
R149
+5V
DS7
1
6
13
FB
U20
1N4007
LM7805
1
3
Vi
Vo
R148
4
74LS08
REM-MUTE4
GND
-12V
.1 0805
1
C100
.01
4
C104
3300uF 25V
4.7uF 50V
+5V
DIM
C118
+5V
CR16
C112
1N4007 .1 50V
2
+12V
RDIM
FB
FB
C105
.01
C110
+5V
1N4007
C108
+12V
470
L15
U21B
REM-MUTE3
CR14
.1 50V
+5V
R143
+5V
REM-DIM
470
L16
2
1
C101
4700uF 50V
Vi
MUTE2
74LS08
+5V
1N4007
ADJ
3
C
9
R144
.1 50V
1N4007
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8
C98
.01
CR11
+DC
MUTE1
74LS08
+5V
CR10
CR12
5
R141
C97
R142
6
C91
.01
1
1
Vi
-12V
ADJ
3
1N4007
14
-DC
7
CR8
C113
3300uF 25V
470
L19
14
J13
U21C
REM-MUTE5
10
FB
8
C114
.01
EARTH
DGND
9
L18
FB
7
AGND
+5V
470
L20
REM-DIMSTATUS
3
2
74LS08
R150
.1 0805
1
MUTE5
U21A
74LS08
U21D
REM-MUTE6
12
FB
11
C115
.01
B
13
MUTE6
B
74LS08
+5V
R152
REM-MUTE1
1
9
2
10
3
11
4
12
5
13
6
14
7
15
8
C116
+5V
REM-MUTE2
REM-MUTALL
14
J14
470
L21
.1 0805
L22
1
REM-MUTE3
REM-MUTESTATUS
3
IND
REM-MUTE4
C117
.1 50V
FB
2
7
REM-MUTE5
REM-MUTE6
REM-MUTESTATUS
REM-MUTEALL
REM-DIMSTATUS
REM-DIM
U17A
74LS08
LED
R151
10
8
1
2
9
470
U18C
74LS08
DB15
DS8
MUTE
A
A
{}
Broadcast Devices, Inc.
Title
ADS-200
Size
B
Date:
5
4
3
2
Document Number
Thursday, December 09, 2004
Rev
B
Sheet
1
4
of
4
3
R95
10.0K 1% MF
6
4
5
10uF 25V
2
NE5532AD8
1
3
2
R101
10.0K 1% MF
R102
10.0K 1% MF
100 1% MF
.1
R103
10.0K 1% MF
2.2K 1% MF
1N4148
DS5
C62
4.7uF 25V
U11B
LED
7
2
9.1K 1% MF
R97
R100
10.0K 1% MF
.001
C63
+
1.3K 1% MF
R98
100.0K 1% MF
1
R96
CR5
-12V
-
C64
C61
+
JMPR-3X2
D
R94
R93
2.2K 1% MF
R99
JP9
2
1
4
-
5
D
NE5532AD8
U11A
3
8
.1
R105
C66
.001
10.0K 1% MF
C67
R104
10.0K 1% MF
C68
C65
1
4
J9
R106
+12V
10uF 25V
L9
FB
C69
200pF MICA
27R
-12V
1
SW1 A
R116
10.0K 1% MF
SW4 A
4
L11
FB
27R
-12V
C80
JP11
20
.1
+12V
R121 2.2K
R122
10.0K 1% MF
JMPR-3X2
2
R125 10.0K
3
10uF 25V
NE5532AD8
1
R120
C81 10.0K 1% MF
R123
R124
B
L12
3
FB
U14A
10.0K 1% MF
200pF MICA
27R
C82
8
DIM
2
R119 470
R126
10.0K 1% MF
C83
6
5
.1
J11
NE5532AD8
7
4
AGND
19
SW4 B
18
V+
17
SW4 CTL
R117
C78
200pF MICA
R118 150
MUTE6
JP12
1
10uF 25V
4
-12V
B
16
SW3CTL
15
SW3B
V14
13
10uF 25V
U12B
1
3
4
5
6
7
8
2
AGND
SW1 B
DGND
SW1 CTL
SW2 CTL
NC
SW2 B
9
10
.1
11
C79
AGND
SW2 A
-12V
AGND
SW3 A
C77
J10
NE5532AD8
7
U13
SSM2404P
C76
10uF 25V
AGND
12
DGND
.1
+
C75
5
.1
-
+12V
27R
6
+12V
+
-12V
EARTH
C73
R115 2.2K
JMPR-3X2
-
-12V
C74
C
200pF MICA
C72
10.0K 1% MF
+12V
L10
3
10.0K 1% MF
8
R114 470
R111
FB
U12A
JP10
+12V
2
3
R107
C71 10.0K 1% MF
R110
+
R112 150
R113
+
C
NE5532AD8
1
R109
10.0K 1% MF
-
MUTE5
10uF 25V
2
-
R10810.0K 1% MF
.1
4
C70
DIM
U14B
+12V
R127
10uF 25V
C84
3
NE5532AD8
1
U15A
R133
CR6
100 1% MF
3
R134
10.0K 1% MF
8
C88
R138
C89
.001
6
10.0K 1% MF
C90
.1
5
1
4
J12
+12V
1N4148
R135
A
1
R137
10.0K 1% MF
10uF 25V
2.2K 1% MF
DS6
C87
4.7uF 25V
U15B
{}
Broadcast Devices, Inc.
LED
Title
7
ADS-200
2
4
9.1K 1% MF
2.2K 1% MF
R130
2
R136
10.0K 1% MF
A
2
+
R132
10.0K 1% MF
.1
-
R128
C85
+
R131
10.0K 1% MF
.001
-12V
-
JMPR-3X2
C86
1.3K 1% MF
R129
100.0K 1% MF
NE5532AD8
Size
B
10uF 25V
Date:
5
4
3
2
Document Number
Thursday, December 09, 2004
Rev
B
Sheet
1
3
of
4
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