AMP VHT1 User manual

AMN-VHT1-B
TABLE OF CONTENTS
1.!INTRODUCTION 1!
1.1.!Purpose and Function 1!
1.2.!Capabilities 1!
1.3.!Environmental Requirements 1!
2.!VHT1 TRANSMITTER 2!
2.1.!VHT1 Specifications 2!
2.2.!VHT1 Mechanical Drawing and Connector Pin-Outs 3!
2.3.!List of Items Furnished 3!
2.4.!List of Items Required 3!
3.!SAFETY PRECAUTIONS 4!
4.!PREPARATION FOR USE 5!
4.1.!Unpacking 5!
4.2.!Transmitter Pre-Test 5!
5.!INSTALLATION AND OPERATING INSTRUCTIONS 5!
5.1.!Local Programming 5!
5.1.1.!“F” – Frequency Mode: 6!
5.1.2.!“d” – Data Type Mode: 6!
5.1.3.!“A” – Audio Type Mode: 7!
5.1.4.!“S” – Subcarrier Mode: 7!
5.1.5.!“I” – Video Inversion Mode: 7!
5.1.6.!“P” – Output Power Mode: 8!
5.1.7.!“r” – RF Output Mode: 8!
5.1.8.!“C” – Preset Mode: 8!
5.2.!Use of Heat Sink 9!
5.3.!Connectors 9!
5.4.!REMOTE COMMANDS 10!
5.5.!Initial Adjustments and Settings 10!
5.6.!Shut Down 10!
6.!MAINTENANCE INSTRUCTIONS 10!
6.1.!Cleaning 10!
6.2.!Troubleshooting 10!
6.3.!Preparation for Reshipment 11!
6.4.!Returning an Item 11!
7.!WARRANTY STATEMENT 12!

AMN-VHT1-B 1
1. INTRODUCTION
Thank you for choosing this AMP Wireless Video Product. Every effort has been made to design and
manufacture a quality product that will meet your surveillance needs for many years. Please visit our
website (www.advmw.com) for information on other products and for datasheets, quick start guides,
model number builders, operation manuals, and other related materials.
If you have any questions regarding this product or if you require technical assistance, please feel free to
contact us at [phone].
1.1. Purpose and Function
VHT1 series Video/Audio/Data Transmitters are developed and manufactured by Advanced Microwave
Products (AMP), and are designed for color or monochrome video, audio, and/or data transmission.
VHT1 series transmitters are best operated with AMP’s V or P series receivers but are compatible with
most other analog FM video receivers on the market.
1.2. Capabilities
AMP Transmitters are designed for harsh environments and feature robust packaging and connectors.
Compact package sizes provide versatility in unit placement and system applications.
AMP Transmitters require no tuning or adjustments. All units operate directly with any standard video
camera or display. Power can be derived from batteries, simple power supplies, or vehicle power.
Whip or “rubber duck” antennas are adequate for most applications.
1.3. Environmental Requirements
AMP Transmitters are designed for indoor or outdoor use. Precautions should be taken when exposing
the products to the elements. Do not expose to 100% humidity.
Transmitters should be located in areas where the ambient temperature does not exceed the maximum
operating temperature indicated in the specifications. Placement in confined locations with minimal
airflow, in direct sunlight in areas of temperature extremes, or in proximity to other devices that generate
heat, such as power supplies, heating systems, etc., should be avoided. Temperatures exceeding +75°C
may cause permanent damage to the equipment.
When not used for extended periods of time, external connections, including power cable, video cable,
and antenna, should be removed and the units covered, boxed, or crated and stored in a clean, dry place.

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2. VHT1 TRANSMITTER
2.1. VHT1 Specifications

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2.2. VHT1 Mechanical Drawing and Connector Pin-Outs
2.3. List of Items Furnished
•(1) VST1 Transmitter (configured as ordered)
2.4. List of Items Required
•Antenna, Type SMA Plug (Male) Connector
•Video Source, Type BNC Jack (Female) Connector
•Power/Audio/Comms Mating Connector (Mates with PT02E-12-10P)
•Heatsink

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3. SAFETY PRECAUTIONS
Transmitters should be handled with caution like any electrical or electronic device. Do not handle the
units or associated cabling with wet hands or materials.
Connections should be made only to previously-tested, active power sources (outlets or batteries) of the
correct voltage, and each connector should be inserted only into its designated port. All connections
should be checked to ensure they are firmly in place.
WARNING! RF RADIATION HAZARD
In order to keep the RF Exposure within the FCC 1.1310 limit, a safe personal distance from the antenna
must be maintained according to the below tables. The first table is for transmitters operating 1500 MHz
or higher where the Maximum Permissible Exposure (MPE) is 10 Watts/meter2. See following for details
on calculation of safe personal distances.
MAINTAIN A SAFE PERSONAL DISTANCE FROM THE ANTENNA WHILE TRANSMITTER IS
OPERATIONAL.
FAILURE TO MAINTAIN A SAFE PERSONAL DISTANCE FROM THE ANTENNA MAY RESULT IN
PERSONAL INJURY.

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4. PREPARATION FOR USE
4.1. Unpacking
Carefully remove the product from the shipping container and make sure all listed furnished items are
included as noted in the respective section. Inspect all items for damage. If any item is omitted from the
shipment or appears damaged, contact AMP with detailed description of problem.
4.2. Transmitter Pre-Test
Although each unit is thoroughly tested at the factory for both functional and environmental performance,
a minimal amount of pre-testing should be done by the operator before placing the transmitter into
service. The transmitter, an appropriate receiver, transmit and receive antennas, a video camera, a video
monitor, proper cabling, and DC power supplies are the only components required to perform a functional
test of the transmitter. If testing audio or data, an audio source (microphone or line level) or data source
and a speaker or headphones (audio) or data monitor will also be required.
Verify DC power supplies are between +11 and +16 Vdc. With the DC Power Cable (PT02E-12-10P
connector) DISCONNECTED from the transmitter, connect DC power supply to DC Power Cable (Pin A =
positive DC input, Pin B = negative DC input (ground)). Do not connect DC Power Cable to transmitter
until all other connections are complete.
Connect the transmit antenna to transmitter RF output connector (SMA). Connect the Video to the
transmitter video input connector (BNC). Connect the Video Cable between the Video Adapter Cable and
video camera. If testing audio or data, connect the audio or data source to the Power/Audio/Data/Comms
Cable (PT02E-12-10P connector) and cable to the transmitter. Refer to Section 2.2 for a complete
transmitter wiring diagram.
Configure transmitter as instructed in Section 5. Connect DC Power Cable to transmitter (mates to
PT02E-12-10P connector on transmitter). Video should be observed on the monitor and audio heard
through the speaker / headphones (or data present) once the transmitter locks on frequency (requires
several seconds). If no video, data, or audio is present, refer to Section 6.2 for troubleshooting
instructions.
5. INSTALLATION AND OPERATING INSTRUCTIONS
Transmitter configuration is available via “Local”, “Preset”, or “Remote” modes. See the V Series ICD for
details on controlling your transmitter remotely or reprogramming its presets. Local configuration and
Presets can be set on the display on the transmitter.
5.1. Local Programming
The transmitter display is always active regardless of whether the unit is in “Local”, “Preset”, or “Remote”
mode. The unit responds to local button presses and remote commands in the same manor and updates
whatever parameter is being changed accordingly. When a transmitter is turned on, it will be in the last
mode it was on when it was last turned off.
To activate or change modes, press the button on the display and the CONFIG character will be
flashing. Use the buttons to scroll through the available modes. When the CONFIG character
displays the mode you want to configure, press the button to select it.

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The display has 1 “Preset” mode (C) and up to 7 “Local” configuration modes:
Local Configuration Modes
Mode
Description
Selectable Options
F
Frequency
Frequency in 1 MHz Steps
d
Data Type
3.3V TTL (3.3) or RS232 (232)
A
Audio Type
Mic -55 dBV (-55) or Line -10 dBV
(-10)
S
Subcarrier
On or OFF
I
Video
Inversion
On or OFF
P
Output
Power
HI (10W) or Lo (4W)
r
RF Enable
On or OFF
Preset Mode
C
Presets
1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D,
E, F
5.1.1. “F” – Frequency Mode:
When you select Frequency Mode or “F” you will notice that the last digit of the displayed frequency is
now flashing. Use the buttons to move through the available frequencies. You can use the
buttons to move through the digits (ones, tens, and hundreds). The active digit will be flashing. Once you
have the frequency you desire, press the button and the “F” will be flashing. Press the button a
second time to confirm your frequency selection, at which time the “F” will no longer be flashing.
5.1.2. “d” – Data Type Mode:
The Data Type mode or “d” will only be available on transmitters equipped with a data subcarrier.
When you select Data Type mode or “d” you will notice that the currently selected Data Type is now
flashing. Use the buttons to select between 3.3V TTL (3.3) or RS232 (232). Once you have the
option you desire, press the button and the “d” will be flashing. Press the button a second time to
confirm your selection, at which time the “d” will no longer be flashing.

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5.1.3. “A” – Audio Type Mode:
The Audio Type mode or “A” will only be available on transmitters equipped with an audio subcarrier.
When you select Audio Type mode or “A” you will notice that the currently selected Audio Type is now
flashing. Use the buttons to select between Mic -55 dBV (-55) or Line -10 dBV (-10). Once you have
the option you desire, press the button and the “A” will be flashing. Press the button a second time
to confirm your selection, at which time the “A” will no longer be flashing.
5.1.4. “S” – Subcarrier Mode:
The Subcarrier mode or “S” will only be available on transmitters equipped with one or two subcarriers
(audio or data). If your transmitter is equipped with two subcarriers, the selection will apply to both.
When you select Subcarrier mode or “S” you will notice that the current subcarrier status is now flashing.
Use the buttons to select between On and OFF. Once you have the option you desire, press the
button and the “S” will be flashing. Press the button a second time to confirm your selection, at which
time the “S” will no longer be flashing.
5.1.5. “I” – Video Inversion Mode:
The Video Inversion mode or “I” will apply to all VHT1 transmitters as it is included as standard on all
units.
When you select Video Inversion mode or “I” you will notice that the currently selected Video Inversion
status is now flashing. Use the buttons to select between On and OFF. Once you have the option
you desire, press the button and the “I” will be flashing. Press the button a second time to confirm
your selection, at which time the “I” will no longer be flashing.

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5.1.6. “P” – Output Power Mode:
The Output Power mode or “P” will only be available on transmitters equipped with both 4 watt and 10
watt outputs.
When you select Output Power mode or “P” you will notice that the currently selected Output Power level
is now flashing. Use the buttons to select between HI (10W) and Lo (4W). Once you have the option
you desire, press the button and the “P” will be flashing. Press the button a second time to confirm
your selection, at which time the “P” will no longer be flashing.
5.1.7. “r” – RF Output Mode:
The RF Output mode or “r” will apply to all VHT1 transmitters.
When you select RF Output mode or “r” you will notice that the currently selected RF Output status is now
flashing. Use the buttons to select between On and OFF. Once you have the option you desire, press
the button and the “r” will be flashing. Press the button a second time to confirm your selection, at
which time the “r” will no longer be flashing.
5.1.8. “C” – Preset Mode:
The Preset mode or “C” will apply to all VHT1 transmitters. Preset mode is independent of all the other
modes. When you are in Preset mode your transmitter will be set to the last known preset configuration.
When you select Preset mode or “C” you will notice that the current active preset is now flashing. Use the
buttons to select a preset from 1 to F (15 total). Once the preset you want to select is displayed,
press the button and the “C” will be flashing. Press the button a second time to confirm your
selection, at which time the “C” will no longer be flashing.
A set of Presets come preconfigured on your transmitter based on frequency band (see the chart below):