DTC Communications VMS2000 S-Band FM Audio/Video Transmitter User Manual operator manual 2

DTC Communications Inc. S-Band FM Audio/Video Transmitter operator manual 2

Contents

Manual

DTC COMMUNICATIONS INCORPORATED
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Video Tideo T
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Operator ManualOperator Manual
Operator ManualOperator Manual
Operator Manual
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Video Tideo T
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Operator ManualOperator Manual
Operator ManualOperator Manual
Operator Manual
VMS-2000 Frequency 2450-2500 MHz
OP1920147 Rev B
How to contact DTC
For operator and troubleshooting
information, customers are encouraged to refer to
the details in this manual. For additional
clarification or instruction, or to order parts,
contact DTC.
Customer Service is available Monday through
Friday between the hours of 9:00 AM and
5:00 PM EST at:
Tel: 603-880-4411
Fax: 603-880-6965
Website: www.dtccom.com
Email: info@dtccom.com
486 Amherst Street
Nashua, New Hampshire 03063
USA
Copyright Notice
Copyright © 2003
DTC Communications, Inc. All rights
reserved. No part of this document may be
reproduced, transmitted, transcribed, stored in a re-
trieval system or translated into any
language or computer language, in any form or by
any means, including but not limited to electronic,
magnetic, mechanical, optical, chemical, manual or
otherwise, without the prior written permission of
DTC Communications, Inc.
Disclaimer
The information in the document is subject to change
without notice. DTC makes no representations or
warranties with respect to the contents hereof, and
specifically disclaims any implied warranties of mer-
chantability or fitness for a particular purpose. DTC
reserves the right to revise this publication and to
make changes from time to time in the content hereof
without obligation of DTC to notify any person of such
revision or changes.
Trademarks
Trademarks of DTC Communications, Inc. include:
• DTC
• MiniPIX®
• DynaPIX®
Other product names used in this manual are the
properties of their respective owners.
Warranty
DTC warrants its manufactured components against
defects in material and workmanship for a period of
two (2) years, commencing on the date of original
purchase.
Products manufactured by others that are approved
for use with DTC equipment are warranted for the
manufacturer’s warranty period, commencing from
the date of shipment from DTC.
FCC information
Forms can be obtained from the FCC on their web-
site at:
www.fcc.gov
You can also contact the FCC using their FAX back
service at: (888) 418-3676
Additional instructions are available by telephone at:
(888) 225-5322
The filing fee form is returned to:
Federal Communications Commission
1270 Fairfield Road
Gettysburg, PA 17325-7245
2
3
TABLE OF CONTENTS
Quick Start ........................................................................... 4
Overview .............................................................................. 5
Specification......................................................................... 6
Current Drain and Battery Drain .......................................... 8
Heatsink Information ............................................................ 9
Connectors......................................................................... 10
Connections ........................................................................11
Equipment Configurations ................................................. 12
Optional Accessories ........................................................ 14
Appendix A ......................................................................... 23
Programming Introduction.................................................. 24
Installing Programming Software ....................................... 25
Programming Procedure .................................................... 26
Manual Conventions
NOTE Describes special issues you should be aware of
while using a particular function.
WARNING Calls out situations in which equipment could
be damaged or a process could be incorrectly imple-
mented, but in which operator safety is not a factor.
TIP Describes application hints.
RF EXPOSURE STATEMENT
This product is NOT to be used in a bodyworn application.
Refer to Appendix A in this manual for instruction in the
proper use of antennas with this device. When in use a
separation distance of at least 50 cm. must be maintained
between the antenna and the body of the user or nearby
persons.
Note: This device is for occupational use only. Occupa-
tional users are those persons who are exposed as a
consequence of their employment, provided these
persons are fully aware of and exercise control over
their exposure.
FCC ID# H25VMS2000
What should you expect to receive with your 2W Transmitter?
1 VMS Video Transmitter
1 Dipole antenna with right angle SMA connector
1 DTC programming software package
1 DTC programming cable
1 One Video and Power In “Y” cable
4
QUICK START
1Make sure that the power to the transmitter is OFF.
2Using a screwdriver, turn the channel selector to the correct channel number.
3Connect an antenna to the ANTENNA connector on the module.
4Select Hi or Lo Power using the recessed switch.
5Connect the microphone or microphones to the MIC-1 and MIC-2 connectors
on the module.
6Connect a video source and external power (11 -16 VDC) to the
Video/Multi-I/O connector.
7Apply power to the transmitter
Warning: Do not apply power to the transmitter until an antenna has been
connected in step 3.
Warning: Refer to Appendix A of this manual for information on the proper
use of antennas.
2
NOTE: DTC has provided you with a “Y” cable (power and video) terminated
with an RCA connector and a BNC adapter for your convenience.
NOTE: The dipole antenna included is not recommended for normal use! This
antenna enables you to quickly set up your transmitter and ensure proper
operation. DTC highly recommends the use of circularly polarized antennas
for the best rejection of multi-path.
35
4
6
5
OVERVIEW
The VMS transmitters are small module transmitters designed for off body applications. They are part of a family of video
transmitters from DTC that provide 250 mW, 2 Watts and 5 Watts output power.
Feature Description
Programmable
User programmable video channels, selectable in 250 kHz steps. Two
user programmable audio sub carriers, selectable in 10 kHz steps
from 6 MHz to 7.5 MHz.
Audio Sub-Carriers
Audio sub carriers are OFF unless microphones are connected. The
transmitter automatically senses when a microphone has been
connected.
The audio sub carriers are phase locked, and will not drift into the
video signal.
Automatic Gain Control is provided on each audio input, amplifying
soft sounds.
Efficient Switching Power Supply
They generate far less heat than traditional video transmitters.
They operate significantly longer than traditional video transmitters on
the same power source.
External Power Loop Through
The power applied to the Multi I/O pin is automatically looped through
the unit, and available on a second pin to power a remote device,
such as a camera. If you apply 9 Volts in, you will get 9 Volts out, with
a maximum current drain of 200mA
Encryption Options The VMSseries supports Ovation Micro ViewLock II™encryption,
which adds approximately .35" to the thickness of the unit.
6
SPECIFICATIONS
RF Specifications
General Specifications
ITEM SPECIFICATION
Power Input Voltage External 11-16 Vdc
Power Consumption 7.2 Watts (not including camera)
Reverse Polarity
Protection YE S
Dimensions 3.9 x 2.7 x 0.512”
Camera Power
Same as supply voltage going
into the transmitter. Current
limited to 200 mA.
Controls
10 channel select rotary switch
Panel mounted, recessed slide
power selection switch
Connectors
2 pin Lemo: Mic 1
2 pin Lemo: Mic 2
SMA: Antenna
6 pin Multi I/O: Video in, Data in,
DC input 11-16 Vdc, camera
power, Remote ON/OFF,
Multiplexed Data out, Ground
Programmability
Video: 2450-2500 MHz
(VMS-2000)
250 KHz resolution steps
Audio: User programmable from
6.0-7.5 MHz, in 10 kHz steps
Chassis notes Machined, solid aluminum with
rounded edges
ITEM SPECIFICATION
Operating Frequency 2450-2500 MHz, 250 KHz
resolution steps
Power output
2000 mW min. @ nominal
supply voltage, 25 Deg. C.
-3db @ 7VDC ext. -2 dB
over temp.
2.5W maximum
Output Impedance 50 Ohms
Spurs and Harmonics output -50 dBc
Load Pull Stability 8:1 VSWR
Frequency Stability +/- 0.003%, -30 to +50°C
Modulation Sensitivity 8 MHz/V nom.
Modulation Sensitivity Variation +/- 5% across the band
Peak Carrier Deviation 4 MHz nom.
Number of channels 10 max. (user programmable)
Sub-carrier sideband level -28 dBc, +/- 2 dB
Environmental Temperature Range -30-+70°C
Humidity 90% (non-condensing)
7
SPECIFICATIONS
Audio Specifications
ITEM SPECIFICATION
Video Frequency Response BW1.5dB = 6 Hz - 5.0 MHz
Input Impedance 75 Ohms
Input Level 1Vp-p M
S/N 60 dB min.
Pre-Emphasis Per CCIR 405 525 line curve
Differential Gain 5%
Video Specifications
ITEM SPECIFICATION
General
Mic level input (line level factory
opt.) 50-3000 Hz
Phased locked AGC on both
inputs. Sub-carrier auto sensing,
only active when microphone is
attached.
Number of sub-carriers 2
Sub-carrier frequencies 6.0-7.5 MHz , user programmable
Sub-carrier ON/OFF Control Subcarriers are activated when
mic is connected.
Subcarrier Frequency Stability +/- 0.003%, -30 to +70°C
Sub-Carrier Deviation 50 kHz peak
Audio S/N 45 dB min.
Frequency Response BW1.5dB = 50-3000 Hz
Total Harmonic Distortion <2%
Input Level 8 mVpp@400 Hz for 50 kHz peak
dev.
Pre-Emphasis 75 uS
Input Impedance 10k Ohm
8
SPECIFICATIONS
Battery Type Part Number Transmitter
Only
Transmitter and
Camera 12V
@120mA
10 D-Cell Alkaline Pack 4045177 9.5 hours 8 hours
Approximate VMS-2000 Current vs. External Supply Voltage
(Camera NOT included)
200
250
300
350
400
450
500
550
600
650
700
11 12 13 14 15 16
External Supply Voltage (Vdc)
Current Drain (mA)
9
11
HEATSINK INFORMATION
Baseplate operating temperature is
-20° to + 80°C. Most applications will
not require a heatsink. In applications
where the baseplate temperature will
exceed +80°, add “-HO” to any
VMXX-2000 transmitter part number
for the optional heat sink at no
additional charge. The drawing on
the left clearly marks the mounting
holes for the heatsink installation
when required. To install the
heatsink.
1Align the mounting holes of the transmitter to the
mounting holes on the heatsink.
2Secure the heatsink with four (4) 6-32 x 1”
screws.
10
MICROPHONE CONNECTORS
Two connectors accommodate two microphone inputs. Each
connector has two contacts and provides power to the
microphone as well as connecting the audio signal into the
transmitter. The audio sub-carriers are activated by the
presence of the microphone. If a microphone is removed,
that sub-carrier is removed from the transmit signal. Turning
off the unused sub-carrier saves power and improves picture
quality.
Microphone Connectors
CONNECTORS
Lemo Male Part # (FFS.01.250.DLAE31
)
DTC Male Part # (8570003)
Hirose Part # HR10A-7P-6P (02)
DTC Part # 954020
MATING CONNECTORS
Antenna Connector
WARNING: Refer to Appendix A of
this manual for information on the
proper use of antennas.
Standard Male SMA Connector
ANTENNAS
A standard SMA connector is used as the antenna connector
on the VMS-2000. Refer to a list of DTC antennas available
on page 17.
TIP: You may use the VMS series transmitters with other
manufacturers antennas. Verify that they are suited for
the band you are operating in.
11
CHANNEL SELECT SWITCH
Select a transmission channel by using the rotary switch
located on the front surface of the transmitter. Use a screw-
driver to rotate the switch to the desired channel number.
HI/LOW OUTPUT POWER SWITCH
Select Hi or Low power by using the recessed power switch.
Switching to Hi power
is equal to 2 Watt output power. Switching to Low power is
equal to 1/4 Watt output power.
MULTI I/O CONNECTOR
The multi I/O (6-pin Multi I/O) connector is mainly used as the
video and external power input connector. It also provides
access to many transmitter functions, such as:
• Programming the device
• Video in
• Power in
• Remote on
• Camera power
CONNECTIONS
Multi I/O Connector
Channel Select
Switch
HI/LO Power
Switch
NOTE: Same as supply voltage. Do
not exceed 200 mA.
Pin 3: Camera
Power Output
Pin 1: Ground
Pin 2: Ext power
input 11-16VDC
Pin 6:
Video in
Pin 5:
RS-232 in
12
BASIC VIDEO TRANSMITTER
It is configured to supply:
• The video signal to the transmitter
from the camera.
• Power to the transmitter through a
molex connector that can easily be
connected to DTC’s battery packs. It
also comes standard with stripped
and tinned leads for a customer
suppled power source. A few of the
DTC battery packs are listed below
and shown in the illustration:
A4045130 (AA Rechargeable)
B4045177 ( D-Cell battery pack)
Alkaline
The cable does not supply power to the camera. The camera
is powered separately with a customer supplied power
source. DTC offers other cables that will supply power to the
camera as an option.
TRANSMITTER
CAMERA
ANTENNA
POWER SOURCE
for transmitter only,
9-16 V.
CAMER
A
POWER
+
STRIPPED AND
TINNED LEADS
STANDARD
A
B
OPTIONAL
BATTERY
PACKS
The basic VMS-2000 configuration consists of the video
transmitter, dipole antenna, and DTC cable part number
4045171-024. This cable is connected to the multi I/O port of
the transmitter.
13
SINGLE POWER SOURCE
It is configured to supply:
• The video signal to the transmitter
from the camera.
• Power to the transmitter through a
molex connector that can be easily
connected to DTC’s battery packs.
• Power to the camera through a
molex connector that can easily be
connected to DTC’s optional
cameras.
NOTE: You will need external camera power if voltage to
the transmitter is not compatible with camera’s operat-
ing voltage, and/or you need greater battery life, and/or
your camera draws more than 200 mA.
CAMERA
ANTENNA
LOOP THROUGH
POWER
SOURCE
FOR TX AND CAMERA
11-16 VDC
STRIPPED AND
TINNED LEADS
STANDARD
A
B
TRANSMITTER
INTERNAL LOOP
CAMERA POWER
OPTIONAL
BATTERY
PACKS
The VMS-2000 configuration, which uses the loop through
power source for the camera, consists of the video transmitter,
dipole antenna, and DTC cable part number 405189-024 .
This cable is connected to the multi I/O port of the transmitter.
14
COMPONENTS
Part Number Description
4045189-024 Video In/EXT Power/Cam. Power
cable, 24”standard.
Specifications
Video In: Multi I/O to RCA(M) with BNC adaptor
(YELLOW)
Ext. Power: 24 AWG wire with a molex connector
and stripped and tinned leads. (RED)
Camera Power: 24 AWG wire with a molex connector
and stripped and tinned leads. (GRAY)
Part Number Description
4045171-024 Video In/EXT Power/Cam. Power
cable, 24”standard.
Specifications
Video In: Multi I/O to RCA(M) with BNC adaptor
(YELLOW)
Ext. Power: 24 AWG wire with a molex connector
and stripped and tinned leads. (RED)
Part Number Description
4045174-006 Antenna Cable 6” standard
4045174-012 Antenna Cable 12” Option
Specifications
Connectors SMA to TNC
15
COMPONENTS
Part Number Description
7011145-012 Microphone, 12” length
7011145-024 Microphone, 24” length
7011145-036 Microphone, 36” length
7011145-048 Microphone, 48” length
7011145-072 Microphone, 6’ length
7011145-144 Microphone 12’ length
7011145-360 Microphone 30’ length
Part Number Description
4045177 D cell battery pack with locking Molex
Micro-fit Connector
Part Number Description
4045173 Programming cable
(Connects from the Multi I/O connector to the DB9 connector)
This cable plugs into COM1 or COM2, serial ports of a PC. It
allows for the programming of the Video transmitter with the
DTC Programming software.
16
TO OPEN:
TO OPEN:
PUSH THIS TAB DOWN TO RELEASE THE MOLEX
LOCKING MECHANISM, THEN PULL CONNECTORS
APART.
TO CLOSE:
PUSH CONNECTORS TOGETHER UNTIL THE
MOLEX LOCKING MECHANISM CLICKS AND LOCKS
COMPONENTS
Part Number Description
4045130 AA (13.5 V) Rechargeable battery
pack (NiMH) with Molex Micro-fit
Connector
Part Number Description
8590138 Terminal, Crimp, Female, micro-fit (3.0)
wire size 20-24 AWG plt gold.
Molex Part # 43030-0009
8550104 Receptacle, 2 circuit, micro-fit (3.0)
in line. Molex Part # 43645-0200
Part Number Description
8590139 Terminal, Crimp, Male, Micro-fit (3.0)
wire size 20-24 AWG plt. gold.
Molex Part # 43031-0009
8550101 Plug, 2 circuit, Micro-fit (3.0)
In line. Molex Part # 43640-0200
Part Number Description
ANT-VIL Dipole Antenna 1.70-1.85 GHz with
right angle SMA adaptor
ANT-VIS Dipole Antenna 2.4-2.5 GHz with
right angle SMA adaptor
The ANT-VIL/S is a 1/2 wave coaxial dipole portable duck
antenna. It can be mounted directly to the video transmitter, or
at a right angle using the adaptor provided.
17
ANTENNAS
ANT-2
WARNING: Refer to Appendix A of this manual for information on the proper
use of antennas.
Part Number Description
7011129 ANT-2 2dB: Dipole 1.7-1.85 GHz
Must be used with SMA to TNC antenna cable
(4045174-006).
7011131 ANT-2 2dB: Dipole 2.4-2.5 GHz
Must be used with SMA to TNC antenna cable
(4045174-006).
ANT-2 is a rugged, lightweight linearly polarized dipole for use in the 2.4 to 2.5
GHz and 1.7-1.85 GHz bands. It can be mounted at the end of a cable with a
compatible connector. This antenna is ground plane independent.
Specifications
Type Sleeve Dipole
Polarization Linear
Peak Gain 2 dBi
Horizontal Beamwidth Omnidirectional
Vertical Beamwidth 77°
Nominal Impedance 50 Ohms
Groundplane Req. Not required
Size 4.0” x 0.75” D
(101mm x 19 mm)
Weight 1 oz. (28g)
DTC Part Number Frequency Range
7011129 1.8 to 1.9 GHz
7011130 2.0 to 2.1 GHz
7011131 2.4 to 2.5 GHz
18
ANTENNAS
Part Number Description
ANT-5-PIG 5 dBi Patch Antenna Connector: SMA or TNC Male on
18" coax. “pigtail”.
DTC has developed a series of circularly polarized patch antennas for use in the
2.0 to 2.5 GHz indoor and short term outdoor installations. The ANT-5-P is a 5dbi
gain, 90 degree wide beamwidth, antenna, mounted on a 0.125 in. thick aluminum
plate. Typical uses include disguised transmitters and vehicular-mounted transmitter
antennas and in a variety of receive applications.
WARNING: Refer to Appendix A of this manual for information on the proper
use of antennas.
Specifications
Type Patch antenna with integral
ring hybrid
Polarization RHCP
Peak Gain 5dBic
Horizontal Beamwidth 90°
Vertical Beamwidth 90°
Nominal Impedance 50 Ohms
Groundplane Req. Built-in
Size 4.0” W x 4.0” H X 0.625” D
(102mm x 102mm x 16mm)
Weight 6.4 Oz. (180 g)
DTC Part Number Frequency Range
ANT-5-P-SMA 2.0 to 2.5 GHz with SMA
male connector
ANT-5-P-TNC 2.0 to 2.5 GHz with TNC
with male connector
ANT-5P
19
ANTENNAS
Part Number Description
VDAR-1 Single 5 dBic “Hybrid-Patch”™ Antenna with mounting
options. Connector: TNC Female on chassis
The VDAR video antennas are designed to operate with traditional single video
receivers and multiple antenna configurations for diversity receivers. The antenna
uses the DTC Hybrid-Patch™ system to ensure pure circular polarization. This
ensures the highest possible performance in video reception, especially in
diversity systems. It is available in four different bands. Reversible and adjustable
suction cup mounts come standard for quick and easy installation on the inside or
outside of window or other hard, smooth surfaces.
VDAR-1
WARNING: Refer to Appendix A of this manual for information on the proper
use of antennas.
Specifications
Type Three Hybrid Patch™
elements
Polarization RHCP
Peak Gain 5dBic
Horizontal Beamwidth 90°
Vertical Beamwidth 90°
Nominal Impedance 50 Ohms
Groundplane Req. Built-in
Size 6.6” H x 6.6” W
(167mm x 167 mm)
Weight 12 Oz. (34g)
DTC Part Number Frequency Range
7011156-1 1700 to 1850 MHz
7011156-3 1990 to 2110 MHz
7011156-2 2400 to 2500 MHz
7011156-2 2200 to 2300 MHz
20
WARNING: Refer to Appendix A of this manual for information on the proper
use of antennas.
ANTENNAS
Part Number Description
ANT-10 9dBic Wideband Panel Connector: TNC Female
DTC has developed a series of circularly polarized panel antennas for use in
wideband transmit and receive applications from 1.7 to 2.7 GHz. The ANT-10-R is
a very wide bandwidth, unidirectional log-spiral array. This antenna has useful
gain, with some sidelobe variation, to 4 GHz. It can be mounted to a wall or swivel
mounted with the MAF-1 grip on two surfaces, via two pairs of “1/4-20” tapped
holes located in the rear center and the bottom center of the aluminum housing.
The front of the antenna is a radome made of a polycarbonate material. The
antenna is suitable for indoor and short-term outdoor use. It must be protected for
extended outdoor use and installations since it is not waterproof.
Specifications
Type Log-spiral slot array, absorber
loaded
Polarization RHCP
Peak Gain 9dBic
Horizontal Beamwidth 30°at 2.0 GHz
Vertical Beamwidth 30°at 2.0 GHz
Nominal Impedance 50 Ohms
Groundplane Req. Not required
Size 9” W x 9” H x 1.2” D
(227mm x 227 mm x 30 mm)
Weight 1.7 lb. (750g)
DTC Part Number Frequency Range
4044411 1.7 to 2.7 GHz; RHCP
7011142 1.7 to 2.7 GHz; RHCP with
MAF - 1 grip included
21
ANTENNAS
Part Number Description
QHA-4 Quadrifilar Helix Antenna with Ring-Hybrid feed
Connector: TNC Female
Must be used with SMA to TNC antenna cable
(4045174-006).
The QHA family of antennas was developed to provide a compact solution for
pattern-tailored circularly polarized antennas. This rugged antenna is omnidirec-
tional when the antenna is vertical. The pattern is slightly elevated to allow over-
head coverage. The base of the antenna includes a special flat with #10-32
threaded hole, 0.25-in. deep for mounting. It is available in both RHCP and LHCP
versions.
WARNING: Refer to Appendix A of this manual for information on the proper use
of antennas.
QHA-4
Specifications
Type Quadrifilar Helix with
Ring-hybrid feed
Polarization Circular
Peak Gain 4dBiC at 24° above
horizon
Horizontal Beamwidth Omnidirectional
Vertical Beamwidth 46°
Nominal Impedance 50 Ohms
Groundplane req. Not Required
Size 8.0” L x 1.25” dia
(203 mm x 32 mm dia)
Weight 3.7 oz. (105 g)
DTC Part Number Frequency Range
QHA-4-2-R 2.4 to 2.5 GHz, RHCP
QHA-4-2-L 2.4 to 2.5 GHz, Lhcp
QHA-4-1-R 1.7 to 1.9 GHz, RHCP
QHA-4-1-L 1.7 to 1.9 GHz, LHCP
22
ANTENNAS
Specifications
Type 16-patch array with progressive
feed
Polarization RHCP or LHCP
Peak Gain 17 dBic
Horizontal Beamwidth 16°
Vertical Beamwidth 16°
Nominal Impedance 50 Ohms
Groundplane req. Not Required
Dimensions 16.0”W x 14.5”H x 0.125”D
(406 mm x 368 mm x 3.2 mm)
Weight 47 oz. (1333g)
DTC Part Number Frequency Range
ANT-17-R 2.4 to 2.5 GHz
Ant-17r
Part Number Description
ANT-17-R 17 dBic Directional Patch Array
Connector TNC Male on 18” coaxial
DTC developed this very high gain RHCP antenna for the 2.4 to 2.5 GHz band. It
provides unidirectional broadside coverage. Unlike conventional Yagi antenna,
this antenna is especially suitable for wall mounting. This panel antenna is useful
in long-range receive applications, applications in high-multipath environments,
where it is impractical or impossible to mount a dish antenna.
23
APPENDIX A
Using Antennas with the VMS-2000 Video Transmitter
Any suitable antenna may be used, however to insure safe operation, it is
imperative that proper spacing be maintained between the radiating surface of
the antenna and any persons body. No antenna should be placed closer than 19
inches (48 cm) to the body. To insure that proper spacing is maintained, locate
the transmitter or arrange physical barriers in such away that people are
prevented from approaching too closely.
24
PROGRAMMING
Introduction
DTC has built in a lot of flexibility in the programming options you have on the
VMS series transmitters. You can choose to use some, all or none of this
flexibility.
When you order a VMS transmitter, DTC will factory program your frequencies at
no additional charge to you. You may want to place a sticker over the rotary switch
on the chassis, so users in the field don’t attempt to change frequencies. This is
often the best path for state and local agencies with limited frequencies available
to them.
DTC will also provide you with free software and a free programming cable,
enabling you to change your video frequencies and their associated audio sub-
carriers. This is ideal if you often work with other agencies, or anticipate the
equipment being used by a multi-jurisdictional task force. You can program up to
ten channel settings per unit. In general, this allows you to program most varia-
tions you might encounter in the field at the depot level.
As a practical matter, your VMS transmitter’s video frequencies and audio sub-
carriers will be dictated by the frequency and sub-carriers(s) of your receiver and/
or repeater. In many cases, these devices are crystal controlled or have few
channel options.
TIP: Make sure that you program your transmitter to match the frequencies
and audio sub-carriers or your receiver, and test the components as a
system prior to going into the field!
25
PROGRAMMING
Installing DTC Universal Programming Software on your PC
NOTE: Uninstall any previous versions by going to Add/Remove Programs,
clicking on DTC Universal Programming, and clicking on uninstall.
1Click on Start, click on run.
2Click on the Browse button.
3Click on or find your CD drive.
4Install the JAVA Runtime Environment Application first (CD provided).
5Follow the install wizard screens.
6Install the Universal Programming software next (floppy provided).
7Click on Start, click on run.
8Click on the Browse Button.
9Click on your floppy drive.
10 Double click on the setup.
11 Follow the install wizard screens.
Your programming software is installed
26
PROGRAMMING
1Make sure that the power to the video transmitter is off.
2Make sure the transmitter has an antenna installed into the antenna connec-
tor prior to programming.
3Install the programming cable into the Multi I/O connector on the transmitter.
4Plug the serial cable of the programming cable into
the COM1 or COM2 port of your computer.
5Connect the programming cable into a power
source.
6Select Start, programs, DTC communications on
your computer.
7The system allows you to select device COM1 or
COM2, depending on which serial port you are
connected to.
8Follow the instructions on the DTC Universal
Programming screens to begin the download process.
AC POWER
COM1 or COM2
Serial port of computer
2
3
4
5
7
8
6
27
9Click on the “Tx Channel” tab in the programmer screen.
10 Select a channel and click on the Edit Channel button to change settings.
11 Enter your new frequency and settings.
12 To change any of the MIC-2 or MIC-1 settings, click on the settings provided,
then click OK.
13 Click on the Upload button to upload your new settings to the transmitter.
Your new settings have been installed.
PROGRAMMING
9
12
10
13
11
486 Amherst Street • Nashua, New Hampshire 03063 • 603-880-4411
www.dtccom.com

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