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Fiber Optic Video Communications 
Bi-directional Video Products
MODEL LMDXA/B-xV |
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| MODEL
LMDXA/B-xV |
1 to 4 Channel Digitally-Encoded, 8-bit, Bi-directional Video |
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| DESCRIPTION
The DXA/B-xV series products incorporate digital encoding technology. This fiber optic module series transmits & receives from 1 to 4 channels of bi-directional, real-time 8-bit digitally-encoded Video channels. 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-xV 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.
(See DXA/B-xW series product for 10-bit version)
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| FEATURES
- 8-Bit Video Digital Encoding
- Real Time bi-directional Video (1, 2, 3 or 4 channels)
- 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
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CONFIGURATIONS
The DXA/B-xV 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 |
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...................................................
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75 Ohm BNC (Gold Center Pin)
ST, FC
See SR-1000 Brochure for details
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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...........................................
2 - Bi-color...........................................
1 - Bi-color...........................................
1 - Green.............................................
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Power On
TX Carrier/ Laser Over Current
RX Carrier - Present / Error RX
RX Optical Signal -Present/Absent
Video Present / Overload (1 per channel)
Sync. Present (1 per channel)
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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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