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Fiber Optic Video Communications 
Unidirectional
MODEL LMDT/DR-4V4A |
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| MODEL
LMDT/DR-4V4A |
Digitally-Encoded Four Channel
Video (8-Bit) with Four Channels Audio |
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| DESCRIPTION
The DV-4V4A series products incorporate digital
encoding technology. This fiber optic module transmits
4 real-time, high performance digitally-encoded Video
signal and 4 channels of 24 Bit quality Audio 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 DV-4V4A series products are enhanced by their compatibility with Lascomm’s PC based SpectraSmart Network Management & Diagnostic Software system. Spectra Smart 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 Spectra Smart brochure for further details.
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| FEATURES
- 8-Bit Digital Video Encoding
- 4 Channels of Real-Time Video Signals
with 4 Channels of Real -Time 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 for Audio
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CONFIGURATIONS
The DV-4V4A 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
Pro Video
Distance Learning
Editing Studios
Tele-Conferencing |
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..................................................
Audio....................................................
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75 Ohm BNC (Gold Center Pin)
ST, FC
DB9 Female |
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Power**
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Card....................................................
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10 Watts
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Indicator
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1 - Green.............................................
1 - Bi-color...........................................
1 - Bi-color...........................................
1 - Bi-color...........................................
4 - Green.............................................
4 - Bi-color...........................................
4 - Red................................................
4 - Green............................................. |
Power On
TX Carrier/ Laser Over Current
RX Carrier - Present / Error RX
RX Optical Signal -Present/Absent
Sync. Present
Video Present / Overload
Audio Overload
Audio 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, 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.................................. |
-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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>200,000 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 |
-23 |
20 |
1300 |
ST |
24 |
Singlemode (FP Laser)
9 / 125 |
-3 |
-23 |
20 |
1310 |
ST, FC |
24 |
Singlemode (DFB Laser)
9 / 125 |
+3 |
-23 |
26 |
1550 |
ST , FC |
24 |
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