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Fiber Optic Video Communications 
Unidirectional Video + Bi-Directional Data
MODEL LMDT/DR-2W1G/1G |
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| MODEL
LMDT/DR-2W1G/1G |
Digital Two Channel 10-Bit Video
Multiplexer with Full Duplex
Multi-Protocol Data Channel |
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| DESCRIPTION
The DC-2W1G/1G series products incorporate digital encoding technology. This fiber optic module transmits two real-time, simplex 10-bit video & full-duplex channel of multi-protocol data (RS-232, RS-422 and RS-485 (2 or 4-wire)) over one optical fiber. These data formats are also compatible with biphase & Manchester encoding schemes. 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 DC-2W1G/1G 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 & DataTransmission
- 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 - 2W1G/1G product family is available as rack mount cards and modules that can be installed in either Lascomm’s desk chaises or in 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 (87 VAC-264VAC)
MARKETS
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....................................................
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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...........................................
2- Green..............................................
2- Bi-color............................................
2 - Green.............................................
2 - Green............................................. |
Power On
TX Carrier/ Laser Over Current
RX Carrier - Present / Error
RX Optical Signal -Present/Absent
Video Present / Overload
Video Sync. Present
Data Present
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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, 127 mm (5”) H
44mm (0.80”)W
450 gms (16 Oz)
2
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Enviromental
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Operating Temperature..........................
Storage Temperature.............................
Relative Humidity.................................. |
-40°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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>170,000 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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