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Fiber Optic Video Communications 
Unidirectional Video + Bi-Directional Audio
MODEL LMDT/DR-2W2A/2A |
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| MODEL
LMDT/DR-2W2A/2A |
Two Channel Digital Video Transmitter/ Receiver with Two
Full Duplex Audio Channels |
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| DESCRIPTION
The DC-2W2A/2A series products incorporate digital
encoding technology. This fiber optic module transmits two real-time, high performance, 10-bit digitally-encoded video signals and two bi-directional (full-duplex) 24-bit Audio channels over one multimode or singlemode fiber. Lascomm’s digital product line incorporates plug-in personality signal cards to easily configure a wide variety of module types. The functionality of the DC-2W2A/2A series products is enhanced by their compatibility with Lascomm’s 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
- 10 Bit Video Digital Encoding
- Real Time Video / Audio
- 24-Bit Digitized Audio
- 7 MHz Video Bandwidth
- Meets RS-250C Medium Haul Transmission Specifications
- NTSC, PAL, SECAM Compatible
- Multi-protocol data channel. Compatible with RS-232, RS-422, RS-485, Manchester, Bi-phase
- 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 for Data
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CONFIGURATIONS
The DC-2W2A/2A 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
Access control
Courtroom audio/video recording
Security and surveillancel
Intelligent transportation systems (ITS) |
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
<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....................................................
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75 Ohm BNC (Gold Center Pin)
ST, FC
See SR-1000 Brochure for details
DB9 Female (2 total) |
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Power**
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Card....................................................
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7 Watts
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Indicator
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1 - Green.............................................
1 - Bi-color...........................................
1 - Bi-color...........................................
1 - Bi-color...........................................
1 - Bi-color...........................................
2- Green..............................................
Green..................................................
Red..................................................... |
Power On
TX Carrier/ Laser Over Current
RX Carrier - Present / Error
RX Optical Signal -Present/Absent
Video Present / Overload
Video Sync. Present
Audio Present (one per channel)
Audio Overload (one 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
50 gms (16 Oz)
2
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Enviromental
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Operating Temperature..........................
Storage Temperature.............................
Relative Humidity.................................. |
-40°C
to +75°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 |
21 |
1310 / 1550 |
ST , FC |
24 |
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