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Fiber Optic Video Communications 
Bi-Directional Video + Audio + Data Products
MODEL LMDXA/B-VAD |
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| MODEL
LMDXA/B-VAD |
1-Channel Digitally-Encoded Bi-directional Video, Audio and RS-232 Data |
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| DESCRIPTION
The DXA/B-VAD series products incorporate digital encoding technology. This fiber optic module transmits & receives the following bi-directional (full duplex) signals: one realtime, high performance 8-bit digitally-encoded Video channel, one RS-232 data channel and one 24-Bit Audio channel over one fiber. Both multimode and singlemode fiber versions are available. Lascomm’s digital product line incorporates plug-in personality signal cards to easily configure a wide variety of module types. The functionality of the DXA/B-VAD series products are enhanced by their compatibility with Lascomm’s optional PC based SpectraSmart Network Management & Diagnostic Software system. SpectraSmart supervises the operating parameters of the transmission system such as the status on video levels, sync, digital carrier detect, voltages, temperatures, optical levels etc. See SpectraSmart brochure for further details.
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| FEATURES
- 8-Bit Video Digital Encoding
- Real Time Video / Audio / Data
- RS-232 Data and 24-Bit Audio
- 7 MHz Video Bandwidth
- Meets RS-250C Medium Haul Transmission Specifications
- NTSC, PAL, SECAM Compatible
- Wide Optical Dynamic Range: Eliminates Need For Optical Attenuators
- Laser Based Systems for Multimode and
Singlemode
- Surface Mount Technology (SMT) for High
Reliability and Repeatability
- SpectraSmartTM Network Management
Compatible
- Local LED Status Indicators to Monitor Critical System Diagnostics for Performance Parameters
- ST, FC Optical Connector
- Hot Swappable Cards
- Laser Back - Biased Photo Detector Circuitry for Stable Optical Output Over Full Temperature Range.
- 75 Ohm BNC Video Connector (Gold Center Pin)
- Meets EIA RS-170, RS-343A Formats
- DB 9 Type Connectors Audio
- DC to 125 Kb/s Data Rate
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CONFIGURATIONS
The DXA/B-VAD product family is available as rack mount cards and modules that can be installed in Lascomm’s card chassis, desk chaises and 19” racking frames. This system can be configured in either star (module to rack) or trunking (rack to rack) configurations. These systems can be made a standalone system by using the SR-1000/ s, 2 slot desk / wall mount chassis (87VAC-264VAC)
MARKETS
Video conferencing
Intelligent transportation systems (ITS)
Security and surveillance
Access Control |
SPECIFICATIONS |
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Video |
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Format..................................................
Voltage/Impedance................................
Bandwidth.............................................
Differential Gain.....................................
Differential Phase...................................
SNR......................................................
Return Loss...........................................
Field Tilt................................................
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NTSC, PAL, SECAM
1 Vp-p, 75 Ohm, 1.5 Vp-p
max.
5 Hz to 6.8 MHz @ -3 dB
<0.6%
<0.3°
>67 dB (weighted)*
>30 dB
< 0.5% |
* As per RS-250C, measured @ 1Km
(multimode) |
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Connectors |
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Video....................................................
Optical..................................................
Power...................................................
Data & Audio.........................................
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75 Ohm BNC (Gold Center Pin)
ST, FC
See SR-1000 Brochure for details
DB9 Female
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Power**
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Card....................................................
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8 Watts
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Indicator
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1 - Green.............................................
1 - Bi-color...........................................
1 - Bi-color...........................................
1 - Bi-color...........................................
1 - Bi-color...........................................
1 - Green.............................................
1 - Green.............................................
1 - Green.............................................
1 - Red.............................................
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Power On
TX Carrier/ Laser Over Current
RX Carrier - Present / Error RX
RX Optical Signal -Present/Absent
Video Present / Overload
Data Present
Sync. Present
Audio Present
Audio Overload
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Physical
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Dimensions:
Card....................................................
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Weight:
Module................................................
Number of Rack Slots............................
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160 mm (6.3”) L, 100 mm (4”) W
44 mm (1.7”) H
450 gms (16 Oz)
2
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Enviromental
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Operating Temperature..........................
Storage Temperature.............................
Relative Humidity.................................. |
-34°C
to +74°C
-55°C to +85°C
0 to 95% Non-condensing |
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Quality |
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MTBF...................................................
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>240,000 hours @ Ground Fix
35°C per MIL217F |
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Optical
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Fiber Type/Size
(um) |
Optical Output
(dBm) |
Reciever Sensitivity
(dBm) |
Optical Budget
(dB) |
Wavelength
(nm) |
Optical
Connector |
Optical Dynamic
Range (dB) |
Multimode (FP Laser)
62.5 / 125 |
-3 |
-24 |
21 |
1300 / 850 |
ST |
24 |
Singlemode (FP Laser)
9 / 125 |
-3 |
-24 |
21 |
1310 / 1550 |
ST, FC |
24 |
Singlemode (DFB Laser)
9 / 125 |
+3 |
-24 |
27 |
1310 / 1550 |
ST, FC |
24 |
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