Communications Specialties 3440 -BXY, -CXY, 3441-BXY, 3441-CXY Fiberlink User's manual
Below you will find brief information for Fiberlink 3440 3440-BXY, Fiberlink 3440 3440-CXY, Fiberlink 3440 3441-BXY. This is a configurable, adjustment-free transmitter/receiver pair that employs digital processing and transmission techniques to convey 1-way video and up to four channels of 1-way audio signals. The unit has been designed for long, reliable, and trouble-free service.
advertisement
Video with 4 Channels Audio
3440 Series
USER’S MANUAL
WORLD HEADQUARTERS
55 Cabot Court
Hauppauge, N.Y. 11788 USA
Tel: (631) 273-0404 Fax: (631) 273-1638 www.commspecial.com
Email: [email protected]
Communications Specialties Pte Ltd
100 Beach Road
#22-09 Shaw Tower
Singapore 189702
Tel: +65 6391 8790 Fax: +65 6396 0138
Email: [email protected]
P/N: 121671 Rev. E
CONTENTS
General Information ...................................................................................... 2
Introduction .......................................................................... 2
Technical Specifications ........................................................ 2
Installation Instructions .................................................................................. 4
Installation Procedure ........................................................... 4
System Switch Settings..………………………. .................. 5
Alarm Switch Settings ........................................................... 5
System Terminal Block Connections..……………….. ......... 6
Indicator LEDs and Alarm Circuitry ...................................... 7
Operating Pointers and Troubleshooting ........................................................ 8
Maintenance .......................................................................................... 10
Statement of Limited Warranty .................................................................... 11
Copyright ©2004, Communications Specialties, Inc.
Fiberlink and the Starburst logo are registered trademarks of Communications
Specialties, Inc.
1
Introduction
GENERAL INFORMATION
The Pure Digital Fiberlink® 3440 series optical transmission system is a configurable, adjustment-free transmitter/receiver pair that employs digital processing and transmission techniques to convey 1-way video and up to four channels of 1-way audio signals.
The use of digital encoding assures high-quality noise-free transmissions that retain all of their initial parameters regardless of fiber optic cable attenuation.
In addition, an integral indicator LED is provided on each unit to continuously signify the presence of an optical signal and thus, the proper operation of each side of the system.
Technical Specifications
Model Part Numbering
Configurations:
Unit Type
Transmitter Box
Transmitter Card
Receiver Box
Receiver Card
Part Number
3440-BXY
3440-CXY
3441-BXY
3441-CXY
X Values:
1 = 850 nm Multimode
3 = 1310 nm Multimode
7 = 1310 nm Single Mode
Y Values:
S = ST connector
F = FCPC connector
Audio:
9 = 1550 nm Single Mode
Bandwidth ................................ 20 Hz to 20 kHz (-3dB)
Input/Output Impedance ........... 600 Ohms or 24k Ohms, balanced or unbalanced
Input/Output Voltage ................. 0dBm nominal +10dBm max.
THD ........................................ 0.1% typical
Signal to Noise Ratio ................ 85dB
Signal Connectors ..................... Removable terminal block
2
LIMITED WARRANTY
Communications Specialties, Inc. (CSI) warrants that for a period of three years after purchase by the Buyer, the Pure Digital Fiberlink 3440 Series Transmission
System will be free from defects in material and workmanship under normal use and service. A Return Material Authorization (RMA) number must be obtained from CSI before any equipment is returned by the Buyer. All material must be shipped to CSI at the expense and risk of the Buyer. CSI’s obligation under this warranty will be limited, at its option, to either the repair or replacement of defective units, including free materials and labor. In no event shall CSI be responsible for any incidental or consequential damages or loss of profits or goodwill. CSI shall not be obligated to replace or repair equipment that has been damaged by fire, war, acts of God, or similar causes, or equipment that has been serviced by unauthorized personnel, altered, improperly installed or abused.
RMA numbers and repairs can be obtained from:
Communications Specialties, Inc.
55 Cabot Court
Hauppauge, N.Y. 11788 USA
Tel: (631) 273-0404 Fax: (631) 273-1638 www.commspecial.com
Email: [email protected]
Or in the Asia Pacific Region:
Communications Specialties Pte Ltd
100 Beach Road
#22-09 Shaw Tower
Singapore 189702
Tel: +65 6391 8707 Fax: +65 6396 0138
Email: [email protected]
Please have your serial number (located on the top label of the unit) available when contacting us.
11
MAINTENANCE
The Pure Digital Fiberlink 3440 Series transmission units have been manufactured using the latest semiconductor devices and techniques that electronic technology has to offer. They have been designed for long, reliable, and trouble free service and are not normally field repairable. Should difficulty be encountered, Communications Specialties maintains a complete service facility to render accurate, timely and reliable service of all products.
The only maintenance that can be provided by the user is to ascertain that optical connectors are free of dust or dirt that could interfere with light transmission and that electrical connections are secure and accurate.
All other questions or comments should be directed to our Customer Service
Department. It should be noted that many “problems” can easily be solved by a simple telephone call.
10
Video:
Bandwidth ...................................... 8 MHz (-3dB)
Input/output Impedance ................. 75 Ohms
Input/output Voltage ...................... 1 V p-p nom., 1.1 Vp-p max.
Differential Phase .......................... 1° typical
Differential Gain ............................ 1.5% typical
Signal to Noise Ratio ..................... 60 dB CCIR weighted
Signal Connectors .......................... BNC
Optical:
Operating Wavelength ................... 850nm, 1310nm, 1550nm MM/SM
Optical Fiber .................................. 62.5/125microns MM or
8-10/125 microns SM
Optical Connectors ........................ ST or FCPC
Wavelength Loss Budget (in dB)
850 MM 0-18
1310 MM
1310 SM
0-14
0-20
Distance* (in km)
0-2
0-14
0-50
1550 SM 11-28 35-90
*Note: Distance specifications are only approximate and are not guaranteed.
Operating loss budget must not be exceeded.
Misc:
Operating Temperature Range....... -35 to +75 degrees C
Operating Power ............................ 9 to 24 Volts AC or DC @ 5 watts (max)
CAUTION! The transmitting element in some versions of the Pure Digital Fiberlink transceiver unit is a solid-state Laser Diode located in the optical connector on the unit. This device emits invisible infrared electromagnetic radiation which can be harmful to human eyes. The radiation from this optical connector, if viewed at close range without a fiber optic cable connected to the optical connector, may be of sufficient intensity to cause instantaneous damage to the retina of the eye. Direct viewing of this radiation should be avoided at all times.
3
INSTALLATION INSTRUCTIONS
Installation Procedure
The Pure Digital Fiberlink 3440 Series transmission systems are normally preset for immediate use with audio input circuitry set for balanced 600 Ohm input impedance and output set for balanced audio. If a different protocol is desired, it can easily be selected using the flip switches located on the back panel of the unit. (See next page.) The following steps describe the typical installation procedure and the function of the LED indicators.
1. The various options, as already mentioned, have been preset. If unbalanced high-input impedance or unbalanced output is desired, please refer to instructions on the following page.
2. Connect the fiber optic cable or cables between the two units.
3. Apply power to both Pure Digital Fiberlink units.
Refer to Figure 1 for DC power connections.
4. When power is applied, the green POWER LED will light, indicating the presence of operating power. The green LINK LED will give an indication stated on page 7. Note that the rack card version will have a third red LED for indicating the presence of an alarm condition (loss of video).
5. Connect the audio input signals to the proper positions on the removable terminal blocks. Check all connections and assure that inputs and outputs are not intermixed. Refer to the next section for the various connections.
6. The system should now be operational.
System Switch Settings
The audio interface circuit used in this product has external switches that are used to configure the various signal options. If you wish to make changes to the factory default settings, please refer that the charts on the following page.
4 can easily block the fiber from accepting or radiating light.
As a result, the key word is cleanliness. Always use the dust caps provided with all optical connectors whenever they are exposed to air. Also, it is a good idea to gently clean the tip of an optical connector with a lint-free cloth moistened with alcohol whenever dust is suspected.
The status of any of the LINK indicator LED should provide the first clue as to the origin of any operation failure. If this LED is off it usually means that the fiber is broken or has too much attenuation. Next, be certain that the input and output signal connections are proper. Due to the number of positions, it is possible that there may be wrong connections.
Finally, although multimode and single mode devices may look the same, they will not operate properly together. Using the wrong device or fiber can easily add more attenuation than specified, resulting in poor overall performance.
If, after reviewing the above possibilities, the system is still not operating, please contact the Customer Service Department for further assistance
9
ON BLINKING OFF: Indicates video detected over fiber and, as a result, video present on output BNC. Active audio detected to the receiver unit.
OFF BLINKING ON: Indicates no video detected over fiber and, as a result, no video present on output BNC. Active audio detected to the receiver unit.
Alarm:
ON: Loss of optical signal or input video (rack card only)
OPERATING POINTERS AND
TROUBLESHOOTING
OPTICAL FIBER:
TROUBLESHOOTING:
The 3440 Series is available in versions that operate with most multimode (MM) and single-mode (SM) optical fibers. Be certain that the correct size fiber is being used for the particular transmitter/receiver combination.
Also be certain that the attenuation and bandwidth of the fiber optic cable being used is within the range of the system’s loss budget specifications.
Multimode fiber optic cable contains an optical fiber with a light carrying “core” that is only .0025 inches
(62.5 microns) in diameter. Single-mode fiber optic cable has an even smaller “core”, only 00032 to .0004
inches (8-10 microns). This is smaller than a human hair! As a result, any minute particles of dirt or dust
8
Audio Input (Transmitter Unit)
Audio Input Switch
Channel
1
Position
1
2
3
4
4
5
6
2
3
7
8
On Off
600 Ohm input impedance 24k Ohm input impedance unbalanced input balanced input
600 Ohm input impedance 24k Ohm input impedance unbalanced input balanced input
600 Ohm input impedance 24k Ohm input impedance unbalanced input balanced input
600 Ohm input impedance 24k Ohm input impedance unbalanced input balanced input
Audio Output Switch
Channel Position
1 1
2 2
3
4
3
4
Audio Output (Receiver Unit)
On
unbalanced output unbalanced output unbalanced output unbalanced output
Off
balanced output balanced output balanced output balanced output
Note: Switches 5,6,7 and 8 are not used and should be left in the off position.
Alarm Switch Settings (Transmitter; Card Version Only)
Switch Position Alarm Indication
1
2
Loss of Video
N/A
On
Enabled
N/A
Off
Disabled
N/A
Alarm Switch Settings (Receiver; Card Version Only)
Switch Position Alarm Indication
1
2
Loss of Signal
N/A
On
Enabled
N/A
Off
Disabled
N/A
Note: “Loss of Video” refers to the loss of input video. “Loss of Signal” refers to the absence of an optical signal or input video.
5
System Terminal Block Connections
The various input and output connections for the Pure Digital Fiberlink 3440
Series system are as follows:
Video Input or Output:
Audio Connector - Transmitter Unit:
Balanced
Position 1Channel 1 Input (-)
Position 1+ Channel 1 Input (+)
Position G Ground
Position 2Channel 2 Input (-)
Position 2+ Channel 2 Input (+)
Position 3Channel 3 Input (-)
Position 3+ Channel 3 Input (+)
Position G Ground
Position 4Channel 4 Input (-)
Position 4+ Channel 4 Input (+)
BNC Connectors
Unbalanced
Channel 1 Ground
Channel 1 Signal
Channel 2 Ground
Channel 2 Signal
Channel 3 Ground
Channel 3 Signal
Channel 4 Ground
Channel 4 Signal
Audio Connector - Receiver Unit:
Balanced
Position 1Channel 1 Output (-)
Position 1+ Channel 1 Output (+)
Position G Ground
Position 2Channel 2 Output (-)
Position 2+ Channel 2 Output (+)
Position 3Channel 3 Output (-)
Position 3+ Channel 3 Output (+)
Position G Ground
Position 4Channel 4 Output (-)
Position 4+ Channel 4 Output (+)
Unbalanced
Channel 1 Ground
Channel 1 Signal
Channel 2 Ground
Channel 2 Signal
Channel 3 Ground
Channel 3 Signal
Channel 4 Ground
Channel 4 Signal
6
Indicator LEDs and Alarm Circuitry
The stand-alone box version of the Pure Digital Fiberlink 3440 Series transmission unit has two integral indicator LEDs that are used to monitor the state of the unit. The status of these LEDs are as follows:
The rack card version of this product has an additional red indicator LED that lights when an alarm condition exists. The rack card unit also provides an output to drive a model 6020 Alarm Sensing Module which provides an audible tone and activates a set of contacts for external signaling purposes.
TRANSMITTER and RECEIVER:
Power: (Green) Indicates that correct power has been applied.
TRANSMITTER:
Link:
OFF: Indicates no video detected on input BNC and no audio detected coming into the transmitter unit.
STEADY GREEN: Indicates video detected on input BNC and no audio detected into the transmitter unit
ON BLINKING OFF: Indicates video detected on input BNC and active audio detected into the transmitter unit.
OFF BLINKING ON: Indicates no video detected on input BNC and active audio detected into the transmitter unit.
Alarm:
ON: Loss of video (rack card only)
RECEIVER:
Link:
OFF: Indicates no video detected over fiber and, as a result, no video present on output BNC. No active audio detected to the receiver unit.
STEADY GREEN: Indicates video detected over fiber and, as a result, video present on output BNC. No active audio detected to the receiver unit.
Receiver indicator conditions continued on next page.
7
System Terminal Block Connections
The various input and output connections for the Pure Digital Fiberlink 3440
Series system are as follows:
Video Input or Output:
Audio Connector - Transmitter Unit:
Balanced
Position 1Channel 1 Input (-)
Position 1+ Channel 1 Input (+)
Position G Ground
Position 2Channel 2 Input (-)
Position 2+ Channel 2 Input (+)
Position 3Channel 3 Input (-)
Position 3+ Channel 3 Input (+)
Position G Ground
Position 4Channel 4 Input (-)
Position 4+ Channel 4 Input (+)
BNC Connectors
Unbalanced
Channel 1 Ground
Channel 1 Signal
Channel 2 Ground
Channel 2 Signal
Channel 3 Ground
Channel 3 Signal
Channel 4 Ground
Channel 4 Signal
Audio Connector - Receiver Unit:
Balanced
Position 1Channel 1 Output (-)
Position 1+ Channel 1 Output (+)
Position G Ground
Position 2Channel 2 Output (-)
Position 2+ Channel 2 Output (+)
Position 3Channel 3 Output (-)
Position 3+ Channel 3 Output (+)
Position G Ground
Position 4Channel 4 Output (-)
Position 4+ Channel 4 Output (+)
Unbalanced
Channel 1 Ground
Channel 1 Signal
Channel 2 Ground
Channel 2 Signal
Channel 3 Ground
Channel 3 Signal
Channel 4 Ground
Channel 4 Signal
6
Indicator LEDs and Alarm Circuitry
The stand-alone box version of the Pure Digital Fiberlink 3440 Series transmission unit has two integral indicator LEDs that are used to monitor the state of the unit. The status of these LEDs are as follows:
The rack card version of this product has an additional red indicator LED that lights when an alarm condition exists. The rack card unit also provides an output to drive a model 6020 Alarm Sensing Module which provides an audible tone and activates a set of contacts for external signaling purposes.
TRANSMITTER and RECEIVER:
Power: (Green) Indicates that correct power has been applied.
TRANSMITTER:
Link:
OFF: Indicates no video detected on input BNC and no audio detected coming into the transmitter unit.
STEADY GREEN: Indicates video detected on input BNC and no audio detected into the transmitter unit
ON BLINKING OFF: Indicates video detected on input BNC and active audio detected into the transmitter unit.
OFF BLINKING ON: Indicates no video detected on input BNC and active audio detected into the transmitter unit.
Alarm:
ON: Loss of video (rack card only)
RECEIVER:
Link:
OFF: Indicates no video detected over fiber and, as a result, no video present on output BNC. No active audio detected to the receiver unit.
STEADY GREEN: Indicates video detected over fiber and, as a result, video present on output BNC. No active audio detected to the receiver unit.
Receiver indicator conditions continued on next page.
7
ON BLINKING OFF: Indicates video detected over fiber and, as a result, video present on output BNC. Active audio detected to the receiver unit.
OFF BLINKING ON: Indicates no video detected over fiber and, as a result, no video present on output BNC. Active audio detected to the receiver unit.
Alarm:
ON: Loss of optical signal or input video (rack card only)
OPERATING POINTERS AND
TROUBLESHOOTING
OPTICAL FIBER:
TROUBLESHOOTING:
The 3440 Series is available in versions that operate with most multimode (MM) and single-mode (SM) optical fibers. Be certain that the correct size fiber is being used for the particular transmitter/receiver combination.
Also be certain that the attenuation and bandwidth of the fiber optic cable being used is within the range of the system’s loss budget specifications.
Multimode fiber optic cable contains an optical fiber with a light carrying “core” that is only .0025 inches
(62.5 microns) in diameter. Single-mode fiber optic cable has an even smaller “core”, only 00032 to .0004
inches (8-10 microns). This is smaller than a human hair! As a result, any minute particles of dirt or dust
8
Audio Input (Transmitter Unit)
Audio Input Switch
Channel
1
Position
1
2
3
4
4
5
6
2
3
7
8
On Off
600 Ohm input impedance 24k Ohm input impedance unbalanced input balanced input
600 Ohm input impedance 24k Ohm input impedance unbalanced input balanced input
600 Ohm input impedance 24k Ohm input impedance unbalanced input balanced input
600 Ohm input impedance 24k Ohm input impedance unbalanced input balanced input
Audio Output Switch
Channel Position
1 1
2 2
3
4
3
4
Audio Output (Receiver Unit)
On
unbalanced output unbalanced output unbalanced output unbalanced output
Off
balanced output balanced output balanced output balanced output
Note: Switches 5,6,7 and 8 are not used and should be left in the off position.
Alarm Switch Settings (Transmitter; Card Version Only)
Switch Position Alarm Indication
1
2
Loss of Video
N/A
On
Enabled
N/A
Off
Disabled
N/A
Alarm Switch Settings (Receiver; Card Version Only)
Switch Position Alarm Indication
1
2
Loss of Signal
N/A
On
Enabled
N/A
Off
Disabled
N/A
Note: “Loss of Video” refers to the loss of input video. “Loss of Signal” refers to the absence of an optical signal or input video.
5
INSTALLATION INSTRUCTIONS
Installation Procedure
The Pure Digital Fiberlink 3440 Series transmission systems are normally preset for immediate use with audio input circuitry set for balanced 600 Ohm input impedance and output set for balanced audio. If a different protocol is desired, it can easily be selected using the flip switches located on the back panel of the unit. (See next page.) There are indicator LEDs on the units for monitoring purposes and various user selectable options for the various signals accommodated. The following steps describe the typical installation procedure and the function of the LED indicators.
1. The various options, as already mentioned, have been preset. If unbalanced high-input impedance or unbalanced output is desired, please refer to instructions on the following page.
2. Connect the fiber optic cable or cables between the two Pure Digital Fiberlink units.
3. Apply power to both Pure Digital Fiberlink units.
4. When power is applied, the green POWER LED will light, indicating the presence of operating power. The green LINK LED will give an indication stated on page 7. Note that the rack card version will have a third red LED for indicating the presence of an alarm condition (loss of video).
5. Connect the audio input signals to the proper positions on the removable terminal blocks. Be certain to check all connections and assure that inputs and outputs are not intermixed. Refer to the next section for the various connections.
6. The system should now be operational.
System Switch Settings
The audio interface circuit used in this product has external switches that are used to configure the various signal options. If you wish to make changes to the factory default settings, please refer that the charts on the following page.
4 can easily block the fiber from accepting or radiating light.
As a result, the key word is cleanliness. Always use the dust caps provided with all optical connectors whenever they are exposed to air. Also, it is a good idea to gently clean the tip of an optical connector with a lint-free cloth moistened with alcohol whenever dust is suspected.
The status of any of the LINK indicator LED should provide the first clue as to the origin of any operation failure. If this LED is off it usually means that the fiber is broken or has too much attenuation. Next, be certain that the input and output signal connections are proper. Due to the number of positions, it is possible that there may be wrong connections.
Finally, although multimode and single mode devices may look the same, they will not operate properly together. Using the wrong device or fiber can easily add more attenuation than specified, resulting in poor overall performance.
If, after reviewing the above possibilities, the system is still not operating, please contact the Customer Service Department for further assistance
9
MAINTENANCE
The Pure Digital Fiberlink 3440 Series transmission units have been manufactured using the latest semiconductor devices and techniques that electronic technology has to offer. They have been designed for long, reliable, and trouble free service and are not normally field repairable. Should difficulty be encountered, Communications Specialties maintains a complete service facility to render accurate, timely and reliable service of all products.
The only maintenance that can be provided by the user is to ascertain that optical connectors are free of dust or dirt that could interfere with light transmission and that electrical connections are secure and accurate.
All other questions or comments should be directed to our Customer Service
Department. It should be noted that many “problems” can easily be solved by a simple telephone call.
10
Video:
Bandwidth ...................................... 8 MHz (-3dB)
Input/output Impedance ................. 75 Ohms
Input/output Voltage ...................... 1 V p-p nom., 1.1 Vp-p max.
Differential Phase .......................... 1° typical
Differential Gain ............................ 1.5% typical
Signal to Noise Ratio ..................... 60 dB CCIR weighted
Signal Connectors .......................... BNC
Optical:
Operating Wavelength ................... 850nm, 1310nm, 1550nm MM/SM
Optical Fiber .................................. 62.5/125microns MM or
8-10/125 microns SM
Optical Connectors ........................ ST or FCPC
Wavelength Loss Budget (in dB)
850 MM 0-18
1310 MM
1310 SM
0-14
0-20
Distance* (in km)
0-2
0-14
0-50
1550 SM 11-28 35-90
*Note: Distance specifications are only approximate and are not guaranteed.
Operating loss budget must not be exceeded.
Misc:
Operating Temperature Range....... -35 to +75 degrees C
Operating Power ............................ 9 to 24 Volts AC or DC @ 5 watts (max)
CAUTION! The transmitting element in some versions of the Pure Digital Fiberlink transceiver unit is a solid-state Laser Diode located in the optical connector on the unit. This device emits invisible infrared electromagnetic radiation which can be harmful to human eyes. The radiation from this optical connector, if viewed at close range without a fiber optic cable connected to the optical connector, may be of sufficient intensity to cause instantaneous damage to the retina of the eye. Direct viewing of this radiation should be avoided at all times.
3
Introduction
GENERAL INFORMATION
The Pure Digital Fiberlink® 3440 series optical transmission system is a configurable, adjustment-free transmitter/receiver pair that employs digital processing and transmission techniques to convey 1-way video and up to four channels of 1-way audio signals.
The use of digital encoding assures high-quality noise-free transmissions that retain all of their initial parameters regardless of fiber optic cable attenuation.
In addition, an integral indicator LED is provided on each unit to continuously signify the presence of an optical signal and thus, the proper operation of each side of the system.
Technical Specifications
Model Part Numbering
Configurations:
Unit Type
Transmitter Box
Transmitter Card
Receiver Box
Receiver Card
Part Number
3440-BXY
3440-CXY
3441-BXY
3441-CXY
X Values:
1 = 850 nm Multimode
3 = 1310 nm Multimode
7 = 1310 nm Single Mode
Y Values:
S = ST connector
F = FCPC connector
Audio:
9 = 1550 nm Single Mode
Bandwidth ................................ 20 Hz to 20 kHz (-3dB)
Input/Output Impedance ........... 600 Ohms or 24k Ohms, balanced or unbalanced
Input/Output Voltage ................. 0dBm nominal +10dBm max.
THD ........................................ 0.1% typical
Signal to Noise Ratio ................ 85dB
Signal Connectors ..................... Removable terminal block
2
LIMITED WARRANTY
Communications Specialties, Inc. (CSI) warrants that for a period of three years after purchase by the Buyer, the Pure Digital Fiberlink 3440 Series Transmission
System will be free from defects in material and workmanship under normal use and service. A Return Material Authorization (RMA) number must be obtained from CSI before any equipment is returned by the Buyer. All material must be shipped to CSI at the expense and risk of the Buyer. CSI’s obligation under this warranty will be limited, at its option, to either the repair or replacement of defective units, including free materials and labor. In no event shall CSI be responsible for any incidental or consequential damages or loss of profits or goodwill. CSI shall not be obligated to replace or repair equipment that has been damaged by fire, war, acts of God, or similar causes, or equipment that has been serviced by unauthorized personnel, altered, improperly installed or abused.
RMA numbers and repairs can be obtained from:
Communications Specialties, Inc.
55 Cabot Court
Hauppauge, N.Y. 11788 USA
Tel: (631) 273-0404 Fax: (631) 273-1638 www.commspecial.com
Email: [email protected]
Or in the Asia Pacific Region:
Communications Specialties Pte Ltd
100 Beach Road
#22-09 Shaw Tower
Singapore 189702
Tel: +65 6391 8707 Fax: +65 6396 0138
Email: [email protected]
Please have your serial number (located on the top label of the unit) available when contacting us.
11
advertisement
Key Features
- Digital processing and transmission techniques
- Conveys 1-way video and up to four channels of 1-way audio signals
- Configurable, adjustment-free
- High-quality noise-free transmissions
- Long, reliable, and trouble-free service
- Integral indicator LED
