AMP VT30 series Manual de usuario
VT30/OM Rev
-
B
Operation Manual
VT30 Series
UHF, L, S, C-Band
Video / Audio Transmitters
Designed and Manufactured By
7025 Longley Lane, Suite 20
Reno, NV 89511
Distributed By
107 Woodbine Down Blvd, Units 7&8
Toronto, ON M9W 6Y1
VT30/OM Rev
-
B
TABLE OF CONTENTS
1.0 Introduction......................................................................................................... 1
1.1 Purpose and Function............................................................................... 1
1.2 Capabilities .............................................................................................. 1
1.3 Specifications........................................................................................... 2
1.4 Mechanical Drawing and Connector Pin-Outs.......................................... 4
1.5 List of Items Furnished ............................................................................ 5
1.6 List of Items Required.............................................................................. 5
1.7 Environmental Requirements ................................................................... 5
2.0 Safety Precautions ............................................................................................... 5
3.0 Preparation for Use.............................................................................................. 6
3.1 Unpacking................................................................................................ 6
3.2 Pre-Test ................................................................................................... 7
4.0 Installation and Operating Instructions................................................................. 7
4.1 Use and Function of Connectors............................................................... 7
4.2 Use and Function of Switches .................................................................. 8
4.2.1 Frequency Selection Switches .................................................................. 8
4.2.2 Dual Power Switch .................................................................................. 8
4.2.3 Video Inversion Switch............................................................................ 9
4.2.4 Audio On/Off Switch(es) ......................................................................... 9
4.2.5 Line / Mic Audio Level Switch(es) .......................................................... 9
4.3 Use of Heat Sink .................................................................................... 10
4.4 Initial Adjustments and Settings............................................................. 10
4.5 Shut Down............................................................................................. 10
5.0 Maintenance Instructions................................................................................... 10
5.1 Cleaning ................................................................................................ 10
5.2 Troubleshooting..................................................................................... 10
5.3 Preparation for Reshipment.................................................................... 11
5.4 Returning an Item .................................................................................. 11
Warranty Statement....................................................................................................... 12
Appendix A (Calculation of Safe Personal Distance from Antenna) .............................. 13
VT30/OM Rev-B 1
1.0 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/video) for information on other
video products and for downloadable datasheets, operation manuals, model number
builders, and frequency selection charts.
If you have any questions regarding this product or if you require technical assistance,
please feel free to contact us at the telephone numbers below:
Dyplex Communications Advanced Microwave Products
(416) 675-2002 (775) 345-9933
1.1 Purpose and Function
VT30 Series Video/Audio Transmitters are developed and manufactured by Advanced
Microwave Products (AMP) and distributed by Dyplex Communications (Dyplex).
Transmitters are designed for color or monochrome video and audio surveillance.
Transmitters are best operated with AMP’s VR75 Series Video Receivers but are
compatible with most other 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. Power requirements are +9 to +16 Vdc and can be derived from
batteries, simple power supplies, or vehicle power.
Whip or “rubber duck” antennas are adequate for most transmitter applications. A
variety of standard and high performance antennas are available through Dyplex.
AMP Transmitters and Receivers are standard equipped with video inversion, selectable
via a slide switch, for a basic level of security.
VT30 Series Transmitters are available with many options allowing customization to
specific applications. Most common options include frequency selection (full band
selection), high RF output power (up to 2 Watts), dual power operation (any two power
levels), PAL video, and dual audio subcarriers with up to 100 kHz bandwidth.
If our standard products and options do not satisfy your requirements, please contact us.
Our experienced design team welcomes your custom specifications.
VT30/OM Rev-B 2
1.3 Specifications
RF Characteristics
Frequency Range (Specify): UHF 340.00 - 399.90 MHz 100 kHz Channels
(Other Ranges Available) L-Band 1710.00 – 1850.00 MHz 250 kHz Channels
S-Band 2450.00 - 2483.50 MHz 250 kHz Channels
C-Band 4400.00 – 4999.75 MHz 250 kHz Channels
Frequency Selection (Specify): Fixed or Channelized, Full Band, Slide Switch Selectable
Frequency Stability: ±0.002% Over -20°C to +50°C
Output Power (Specify): 250 mW, 500 mW, 1 W, 2 W, or Dual Power (Any 2 Levels,
Slide Switch Selectable)
Output Impedance: 50 _ Nominal, VSWR 1.5:1 Maximum
Output Protection: UHF None – 20:1 VSWR Indefinitely
L/S/C Internal Isolator - Open/Short Indefinitely
Spurious Output: -13 dBm Maximum
Video Characteristics
Modulation Type: Analog FM
Modulation Sense: Standard (Positive) or Inverted (Negative), Slide Switch Selectable
Frequency Response (Specify): 10 Hz to 3.5 MHz (Monochrome), 4.5 MHz (NTSC), or 5.5 MHz
(PAL), ±1.5 dB
Pre-Emphasis (Specify): 525-Line (NTSC), 625-Line (PAL), or None
Modulation Sensitivity: ±4 MHz / 1 Vpk-pk @ Crossover Frequency
Input Impedance: 75 _ Nominal, Unbalanced, Shunted by 30 pF Maximum
Distortion: 2% Maximum
Incidental FM: 10 kHz Maximum
Audio Characteristics
Subcarriers (Specify): One or Two
Subcarrier Frequency (Specify): 4.83, 5.8, 6.0, 6.2, 6.5, 6.8, 7.2, 7.5, 8.3, 8.5, or 8.59 MHz, or Custom
Subcarrier Separation (Two): 700 kHz Minimum
Frequency Stability: ±0.5% Over -20°C to +50°C
Subcarrier Insertion Level: -26 dBc Nominal
Subcarrier On/Off Control: Slide Switch Selectable
Modulation Type: Analog FM, Positive Sense
Frequency Response (Specify): 20 Hz to 10 kHz (Audio) or 100 kHz (Data), ±1.5 dB
Pre-Emphasis (Specify): 75 sec (NTSC) or 50 sec (PAL)
Modulation Sensitivity: 100 kHz pk-pk @ 1 kHz rate, Mic (-70 to -20 dBm) or Line (-10 dBV)
Input Impedance: 4.7 k_ Minimum, Unbalanced
Input Level: Line or Mic, Slide Switch Selectable
Mic Supply Output (Specify): 1.5 Vdc, 3.3 Vdc, or 5.0 Vdc
VT30/OM Rev-B 3
Power Requirements
Input Voltage: +9 to +16 Vdc, Reverse Polarity Protected
Current Draw: UHF/L/S-Band 200 mA, 350 mA, 600 mA, 800 mA (for 250 mW, 500 mW, 1 W, 2 W)
(Maximum) C-Band 275 mA, 450 mA, 700 mA, 900 mA (for 250 mW, 500 mW, 1 W, 2 W)
On/Off Control: Open = Off, Ground = On
Mechanical
Material: CNC Machined T6061-T6 Nickel Plated Aluminum
Dimensions: 2.50” W x 3.50” L x 0.35” H
Weight: 2.5 oz. Maximum
Connectors: RF Output: SMA Female
Video Input: SSMA Female (Others Available)
DC Supply, On/Off: MDM-9P
Audio/Mic Supply: MDM-9S
Environmental
Temperature (Operating): -20°C to +50°C
Humidity: Up to 95% @ Any Temperature Forming Frost or Condensation
VT30/OM Rev-B 4
1.4 Mechanical Drawing and Connector Pin-Outs
VT30/OM Rev-B 5
1.5 List of Items Furnished
1-Transmitter
1-Type SSMA Plug (Male, SMB Optional) to BNC Jack (Female) Video Adapter Cable
1-Type BNC Plug (Male) to BNC Plug (Male) Video Cable
1-Type MDM-9S (Socket) DC Power Cable
1-Type MDM-9P (Pin) Audio Cable
1-Heatsink (if required / purchased)
1.6 List of Items Required
Antenna, Type SMA Plug (Male) Connector
Camera, Type BNC Jack (Female) Connector
Video connector adapter to BNC, if camera does not have BNC connector
Microphone(s)
1.7 Environmental Requirements
AMP Transmitters are designed for indoor or outdoor use. Precautions should be taken
when exposing transmitters 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 (Section 1.4).
Placement in confined locations with minimal air flow, in direct sunlight in areas of
temperature extremes, or in proximity to other devices which 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. See Section 1.7 above for environmental requirements.
2.0 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. The second table is for
transmitters operating in the 340-400 MHz range where the MPE is 2.27
Watts/meter2. See Appendix A for details on calculation of safe personal distances.
VT30/OM Rev-B 6
Operating Frequency 1500 MHz and Higher (MPE = 10 W/m2)
Transmitter Power Transmitter Power Transmitter Power Transmitter Power
0.25 Watts 0.5 Watts 1 Watt 2 Watts
Antenna Minimum Minimum Minimum Minimum
Gain EIRP Distance EIRP Distance EIRP Distance EIRP Distance
(dBi) (Watts) (Meters) (Watts) (Meters) (Watts) (Meters) (Watts) (Meters)
0 0.25 >0.20 0.50 >0.20 1.00 >0.20 2.00 >0.20
2 0.40 >0.20 0.79 >0.20 1.58 >0.20 3.17 >0.20
5 0.79 >0.20 1.58 >0.20 3.16 >0.20 6.32 0.22
10 2.50 >0.20 5.00 >0.20 10.0 0.28 20.0 0.40
15 7.91 0.25 15.8 0.35 31.6 0.50 63.2 0.71
20 25.0 0.45 50.0 0.63 100.0 0.89 200.0 1.26
25 79.1 0.79 158.1 1.12 316.2 1.59 632.5 2.24
30 250.0 1.41 500.0 1.99 1000.0 2.82 2000.0 3.99
Operating Frequency 340 - 400 MHz (MPE = 2.27 W/m2)
Transmitter Power Transmitter Power Transmitter Power Transmitter Power
0.25 Watts 0.5 Watts 1 Watt 2 Watts
Antenna Minimum Minimum Minimum Minimum
Gain EIRP Distance EIRP Distance EIRP Distance EIRP Distance
(dBi) (Watts) (Meters) (Watts) (Meters) (Watts) (Meters) (Watts) (Meters)
0 0.25 >0.20 0.50 >0.20 1.00 >0.20 2.00 0.26
2 0.40 >0.20 0.79 >0.20 1.58 0.24 3.17 0.33
5 0.79 >0.20 1.58 0.24 3.16 0.33 6.32 0.47
10 2.50 0.30 5.00 0.42 10.0 0.59 20.0 0.84
15 7.91 0.53 15.8 0.74 31.6 1.05 63.2 1.49
20 25.0 0.94 50.0 1.32 100.0 1.87 200.0 2.65
25 79.1 1.66 158.1 2.35 316.2 3.33 632.5 4.71
30 250.0 2.96 500.0 4.19 1000.0 5.92 2000.0 8.37
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.
3.0 PREPARATION FOR USE
3.1 Unpacking
Carefully remove the transmitter from the shipping container and make sure all listed
furnished items are included (Section 1.5). Inspect all items for damage. If any item is
omitted from the shipment or appears damaged, contact Dyplex or AMP with detailed
description of problem.
VT30/OM Rev-B 7
3.2 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 AMP
receiver, transmit and receive antennas, a video camera, a video monitor, a microphone, a
speaker or headphones, and DC power supplies are the only components required to
perform a functional test of the transmitter.
The transmit and receive antennas should be situated at a distance of greater than 25 feet
apart to prevent serious damage to or destruction of the receiver’s front end. Set up the
receiver and make all necessary adjustments in accordance with that unit’s Operation
Manual. Connect the receiver video output to the video monitor and the receiver audio
output to the speaker or headphones.
If using remote control, connect remote control to the On/Off Control line (white wire in
DC Power Cable). If not using remote control, connect the On/Off Control line to power
or chassis ground.
Verify DC power supplies are between +9 and +16 Vdc. With the DC Power Cable
(MDM-9S connector) DISCONNECTED from the transmitter, connect DC power supply
to DC Power Cable (red = positive DC input, black = 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 Adapter Cable to the transmitter video input connector (SSMA, SMB optional).
Connect the Video Cable between the Video Adapter Cable and video camera. Connect
the microphone to the Audio Cable (MDM-9P connector) and Audio Cable to the
transmitter (mates to MDM-9S connector on transmitter). Refer to Section 4.1 for Audio
Cable wiring.
Configure switches as instructed in Section 4.2. Connect DC Power Cable to transmitter
(mates to MDM-9P connector on transmitter). If not using remote control, video should
be observed on the monitor and audio heard through the speaker / headphones once the
transmitter locks on frequency (requires several seconds). If using remote control, the
On/Off Control line must be enabled (grounded or <0.8 Vdc) before video and audio will
be present.
If no video or audio is present, refer to Section 5.2 for troubleshooting instructions.
4.0 INSTALLATION AND OPERATING INSTRUCTIONS
4.1 Use and Function of Connectors
AMP Transmitters are simple to install, requiring only connection to the antenna, camera,
microphone, and DC power supply using the appropriate cables and jacks. The use and
function of the transmitter connectors are as follows:
VT30/OM Rev-B 8
POWER CONNECTOR (MDM-9P)
Mate: Supplied MDM-9S Power Cable
Red Wire – Positive DC Input (+9 to +16 Vdc)
Black Wire – Negative DC Input (Ground)
White Wire – On/Off Control
(Ground or <0.8 Vdc for On, Open for Off)
AUDIO CONNECTOR (MDM-9S)
Mate: Supplied MDM-9P Audio Cable
Red Wire – Mic 1 Supply Output
Yellow Wire – Audio 1 Input (Mic or Line)
Orange Wire – Mic 2 Supply Output
Violet Wire – Audio 2 Input (Mic or Line)
Black Wire(s) – Ground (1 per subcarrier)
VIDEO CONNECTOR (SSMA)
SMB Connector Optional
Mate: Supplied Video Adapter Cable
Standard 75 Ohm Video Input
Accepts Standard 1 Vpk-pk Video Signal
RF OUTPUT CONNECTOR (SMA)
Mate: Appropriately Selected SMA Antenna
Standard 50 Ohm RF Output
Outputs Nominal RF Power Level to Antenna
4.2 Use and Function of Switches
4.2.1 Frequency Selection Switches:
Frequency selectability is an option on all VT30 Series Transmitters providing RF
frequency control with slide switches accessible through the chassis lid. S-Band units
utilize 8 slide switches; UHF, L-Band, and C-Band units utilize 12 slide switches. Each
switch is uniquely identified (FS1 through FS8, or FS1 through FS12) on the unit label.
To program the desired RF frequency, position the individual switches as shown in the
applicable Frequency Selection Chart, included with product shipment and available as a
download on the applicable Video Product Page of our website
(www.advmw.com/video).
4.2.2 Dual Power Switch:
VT30 Series Transmitters may be ordered with nominal RF output power of 250 mW,
500 mW, 1 Watt, or 2 Watts and may be optionally configured for dual power operation
utilizing any two power levels. RF output power level is controlled with a slide switch
accessible through the chassis lid. Switch is inactive if this option is not purchased.
To select the higher RF output power level, position the slide switch to HIGH PWR as
indicated on the unit label. To select the lower RF output power level, position the slide
switch to LOW PWR as indicated on the unit label.
L, S, and C-band VT30 Series Transmitters operating at 2 Watts incorporate an automatic
power “fold back” circuit to protect the unit in case of high VSWR loads (such as RF
short, RF open, broken antenna, wrong antenna, etc.). In the event of a high VSWR load
causing greater than 1 Watt power reflection, the RF output power is automatically
reduced to below 1 Watt to avoid excessive heat and potential damage to the unit. The
“fold back” circuit attempts to restore the RF output power to its normal level every 1
millisecond, checking each time whether the high VSWR load has been repaired.
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