USER’S MANUAL
AUDIO CONTROL UNIT
(ACU)
Model 580230
For
The Rail Network
Atlanta
Aug 3, 2005
Applied Wireless Inc. ♦ 1250 Avenida Acaso, Unit F, Camarillo, CA 93012
TEL 805 383-9600 ♦ FAX 805 383-9001 ♦ www.appliedwireless.com
TABLE OF CONTENTS
Page 2 of 19
General Description 3
FCC Notice 3
Front Panel Features/Connections (580320-PINOUTS) 4
Antenna Connections 6
Spares List 9
Manufacturer Contact Information 9
Appendix 10
Frequency Allocation Chart 11
Electrical Specifications 12
Block Diagram 14
Schematics
460320 Wiring Diagram 15
450323 MAIN Power Board 16
450327 48V Power Board 17
450326 DB9 Interface Board 18
Outline Drawing 19
Page
Page 3 of 19
GENERAL DESCRIPTION
The ACU is a low power, 7-channel, FM stereo transmitter, operating in the FM band (88.1-
107.7 MHz). The unit has 7 transmitter “cards” integrated into a single 19-inch chassis for rack
mounting. It has two 88.1-107.7 MHz output ports for two separate antenna systems. The
transmitters can individually operate in either stereo or mono mode. Each transmitter card can
be set to a specific operating frequency using the two 10-position rotary switches on each card.
The ACU has an internal regulator and power supply to provide 48VDC at 0.5 Amps to external
equipment. The unit is powered by the 37.5-volt supply from the rail transit vehicle.
The product is to be professionally installed and used in mass transit rail vehicles.
FCC Notice
FCC ID: QY4-580230
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two
conditions:
(1) This device may not cause harmful interference and
(2) This device must accept any interference received, including interference that may cause
undesired operation.
The user is cautioned that changes or modifications not expressly approved by the party
responsible for compliance could void the user’s authority to operate this equipment.
Page 4 of 19
FRONT PANEL FEATURES (refer to drawing 580320-PINOUTS)
Page 5 of 19
Stereo/Mono Switch
Set to appropriate setting
Modulation LED’s
LED’s should usually be in the green, with occasional flashes of RED. No LED’s lighted
indicates no audio input.
SW2(LSB)/SW1 (MSB)
Set to appropriate channel. Reference the Frequency Allocation Chart.
Power LED
LED is lighted when power is applied. No light indicates either there is no power to the
ACU, or the re-settable fuse has been tripped. If the PTC re-settable fuse is tripped, it
will reset itself when the problem is resolved and the re-settable fuse cools .
ANT OUT A
Connect to “A” car antenna system.
ANT OUT B
Connect to “B” car antenna system. Power to this port is attenuated by 4 dB vs the “A”
antenna connection port to compensate for cable losses in the longer “A” car antenna
cabling.
J1 POWER IN
Connects to 37.5-volt supply.
J2 ETHERNET/SU
Connect to Ethernet port of the subscriber unit. This is a pass through connection from
J6. Internally, the ACU supplies power to the SU from this port via pins 6 through 9.
See drawing 460320.
J3 ISO IN
Connects internally to pins 11 and 14 on J7.
J4 MONO CH1, 2, 3
Balanced Audio Inputs for mono channels.
J5 STEREO CH 5, 6, 7
Balanced Audio Inputs for stereo channels.
J6 ETHERNET/VMC
Connect to Ethernet port on VMC. Passes signal directly through to J2.
J7 ST CH4/ISO OUT
Audio Input for Ch 4
ANTENNA INSTALLATION
Page 6 of 19
The antenna system and ACU, which are exclusively installed in mass transit rail cars,
must be professionally installed in accordance with these instructions.
The ACU is to be installed in the utility cabinet of the “B” rail car of a “married pair” rail car
pair. See the Antenna Connection drawing 550320-ANT.
The ACU connects to the antenna system as shown in 550230-ANT.
The Leaky Feeder Antenna’s are made in accordance with drawing RC-WI-002 by terminating
one end in a 50-ohm resistor and connecting the other end to an N male connector.
The components required for the Antenna System assembly are as follows:
ITEM QTY MFG PN NOTES
Power Splitter, 2-Way, “F” 2 Steren 201-202
Adapter, BNC M to F Fe 6 Steren 200-108 For use on power
splitters
Antenna, Leaky Feeder,
80”
Connector, N Female 2 Times
Coax Cable Times
2 Times
Microwave
Microwave
Microwave
T-RAD-600FR See drawing RC-WI-
002
EZ-600-NF Attaches to one end
of Antenna
LMR-195 See drawing 550320-
ANT
Connector, BNC Male 8 Amphenol 31-4320 Crimped to LMR-195
at ACU and 2-Way
Splitter
Connector, N Male 2 Amphenol 82-5375-RFX Crimped to LMR-195
at antenna.
Resistor, 50 Ohm, leaded 2 Vishay/Dale RN60D49R9F
B14
The “A” output port of the ACU connects to the “A” rail car antenna system, which is furthest
from the ACU. This port has 4-dB more output power than the “B” ACU port to compensate for
the additional line losses to the “A” rail car.
The B port of the ACU is connected to the “B” rail car antenna system, which is the rail car in
which the ACU is installed.
The antennas are installed at ceiling level. They are spaced 40 feet apart, 17.5 feet from each
end of the rail car.
Specific assembly and routing installation information for cables, antenna and other components
of the audio/video system can be found in the manual, Interior Wire Harness Pre-Fabrication
Instructions, RC-WI-002.
7/07/2005 09:18:02a f=1.01 C:\Program Files\EAGLE-4.13\projects\TRAIN\550320-ANT.sch (Sheet: 1/1)
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Page 8 of 19
Page 9 of 19
ACU SPARES LIST
PN Description MFG
450322 CATV AMP Applied Wireless
450319 TRANSMITTER CARD Applied Wireless
450323 MAIN POWER BOARD Applied Wireless
450327 48V POWER BOARD Applied Wireless
600130C CONTACTS FOR J1, J3 (3W3, 5W5) FCT Elec. FMP002P103
270024 LED Assembly Lumex SSI-LXR4815SRD
320117-TO3 LM117 REGULATOR IC (TO-3) National LM117HVK
610183-6 D-Connector Hardware Kit, for J2, J6 3M 3341-4
610183 D-Connector Hardware Kit, for J1, J3, J4, J5, J7 3M 3341-1L
600091-RIB Connector Shell, 8-pin, (used on 450323) Molex 09-50-8083
600091-4-RIB Connector Shell, 4-pin, (used on 450320) Molex 09-50-8043
600091-3-RIB Connector Shell, 3-pin, (used on 450327,
Molex 09-50-8033
450326)
600092-PHO Contact Pins, Female, 18-20 AWG (used on
Molex 08-52-0113
600091 Connector shells)
MANUFACTURER CONTACT INFORMATION
Applied Wireless Inc.
1250 Avenida Acaso, Unit F
Camarillo, CA 93012
TEL 805 383-9600
FAX 805 383-9001
www.appliedwireless.com
Page 10 of 19
APPENDIX
ACU Frequency Allocation Table
Page 11 of 19
Channel SW1 SW2 Freq.(Mhz) Channel SW1 SW2 Freq.(Mhz)
1 0 0 88.100 51 5 0 98.100
2 0 1 88.300 52 5 1 98.300
3 0 2 88.500 53 5 2 98.500
4 0 3 88.700 54 5 3 98.700
5 0 4 88.900 55 5 4 98.900
6 0 5 89.100 56 5 5 99.100
7 0 6 89.300 57 5 6 99.300
8 0 7 89.500 58 5 7 99.500
9 0 8 89.700 59 5 8 99.700
10 0 9 89.900 60 5 9 99.900
11 1 0 90.100 61 6 0 100.100
12 1 1 90.300 62 6 1 100.300
13 1 2 90.500 63 6 2 100.500
14 1 3 90.700 64 6 3 100.700
15 1 4 90.900 65 6 4 100.900
16 1 5 91.100 66 6 5 101.100
17 1 6 91.300 67 6 6 101.300
18 1 7 91.500 68 6 7 101.500
19 1 8 91.700 69 6 8 101.700
20 1 9 91.900 70 6 9 101.900
21 2 0 92.100 71 7 0 102.100
22 2 1 92.300 72 7 1 102.300
23 2 2 92.500 73 7 2 102.500
24 2 3 92.700 74 7 3 102.700
25 2 4 92.900 75 7 4 102.900
26 2 5 93.100 76 7 5 103.100
27 2 6 93.300 77 7 6 103.300
28 2 7 93.500 78 7 7 103.500
29 2 8 93.700 79 7 8 103.700
30 2 9 93.900 80 7 9 103.900
31 3 0 94.100 81 8 0 104.100
32 3 1 94.300 82 8 1 104.300
33 3 2 94.500 83 8 2 104.500
34 3 3 94.700 84 8 3 104.700
35 3 4 94.900 85 8 4 104.900
36 3 5 95.100 86 8 5 105.100
37 3 6 95.300 87 8 6 105.300
38 3 7 95.500 88 8 7 105.500
39 3 8 95.700 89 8 8 105.700
40 3 9 95.900 90 8 9 105.900
41 4 0 96.100 91 9 0 106.100
42 4 1 96.300 92 9 1 106.300
43 4 2 96.500 93 9 2 106.500
44 4 3 96.700 94 9 3 106.700
45 4 4 96.900 95 9 4 106.900
46 4 5 97.100 96 9 5 107.100
47 4 6 97.300 97 9 6 107.300
48 4 7 97.500 98 9 7 107.500
49 4 8 97.700 99 9 8 107.700
50 4 9 97.900
Page 12 of 19
ELECTRICAL SPECIFICATION
Audio Control Unit
The following describes the specifications for an unlicensed, 7-channel FM stereo
broadcast transmitter.
Front Panel Features
Modulation Indicators Green LED- Normal
Red LED-Peak
Stereo/Mono Select Slide Switch
Input Power Receptacle 3W3 D Connector Male
Ethernet-SU Power DB-9 Female
Ethernet-VMC Data DB9-Male
Audio Bal-In, Mono, CH1-3 DB25 Female
Audio Bal-In, Stereo, Ch 5-7 DB25 Female
Audio Bal-In, Isolated, CH 4 5W5 Male
Isolated Out- CH 4 DB15HD male
Antenna Outputs 2ea, BNC Female
Indicators
Power Indicator Red LED
Channel Select 2ea, 0 to 9, BCD Rotary Switch
Power Supply Attributes
Supply Voltage 37.5 VDC (70% to 120%)
Supply Current, No S.U. Load 345mA (excluding external Proxim power
requirement of 0.40 Amps
Supply Current, with SU Load 1.2A Typical
Output Voltage to SU 48VDC +/-1.0VDC
Output Current, S.U. 400mA Typical, 470mA max
Power Dissipation 26W, with SU Load, 37.5 VDC Input
Audio Input 0dB, 600ohm, Balanced. 4-wires/channel
Applied Wireless Inc., 1250 Avenida Acaso, Unit F, Camarillo, CA 93012
Phone 805 383-9600 • Fax 805 383-9001 • www.appliedwireless.com
Page 13 of 19
RF Attributes
No. of FM Channels 7
Frequency 88.1 to 107.7 MHz, 200khz Steps
FM Deviation (Peak) +/-75KHz Typical
Environmental Specifications
Operating Temperature -10F to +120F
Vibration/Shock
IEC 61373, Edition 1999-1 Paragraphs 8.0, 9.1, and 10.1.
EMC
Conducted Emissions Per EN5501, Class A, 150kHz to 30 MHz
Radiated Emissions Per EN 5501, Class A, 30MHz to 1GHz
Immunity
RF Electromagnetic Field Per EN61000-4-3, 80MHz to 1 GHz and 1.4 to 2.0
GHz at 10V/m, 1 KHz AM, 80% Modulation
Fast Transients Per EN61000-4-4, 2KV on Power Lines
Power Line Surges Per EN61000-4-5, Line to Gnd, Line to Line, +/-
0.5kV, +/-1.0kV, +/-2.0kV
Applied Wireless Inc., 1250 Avenida Acaso, Unit F, Camarillo, CA 93012
Phone 805 383-9600 • Fax 805 383-9001 • www.appliedwireless.com
Transmitter
Page 14 of 19
Module 1
Transmitter
Module 2
Transmitter
Module 3
Transmitter
Module 4
Transmitter
Module 5
Transmitter
Module 6
Transmitter
Module 7
DC Input
+37.5 VDC
Passive
Combiner
U8-11
Power Supply
+12 V, +28V,
+48 V Outputs
CATV
Amplifier
U1
Low Pass
Applied Wireless
7 Channel 88-108 MHz FM
Stereo Transmitter
Block Diagram
Ref. Schematics 400320B, 400322,
400323, 400327
Filter
FL1
Antenna
System
Rail Car A
2- Way
Splitter
U14
Antenna
System
Rail Car B
5/25/2005 07:59:51a f=1.01 C:\Program Files\EAGLE-4.13\projects\TRAIN\460320A.sch (Sheet: 1/1)
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10/20/2004 11:46:26a C:\Program Files\EAGLE-4.13\projects\TRAIN\400323.sch (Sheet: 1/1)
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1/10/2005 09:41:31a f=1.01 C:\Program Files\EAGLE-4.13\projects\TRAIN\400327.sch (Sheet: 1/1)
Page 17 of 19
12/02/2004 11:02:32a f=1.01 C:\Program Files\EAGLE-4.13\projects\TRAIN\400326a.sch (Sheet: 1/1)
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