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Fiber Optic Video Communications 
Unidirectional Video Products
MODEL LM195 |
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| MODEL
LM195 |
3 Channel 30MHz FM Video System over 3 fibers |
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| DESCRIPTION
The LM195 is a Frequency (FM) Modulated
fiber optic video system that transmits
and receives three real time 30 Mhz video
signals over three multimode fibers. PAL,
SECAM and NTSC formats in B&W or color
are seamlessly transmitted distances of
3Km (multimode) and 100Km (singlemode).
The 195's capabilities are enhanced by it's
compatibility with Lascomm's PC based SpectraSmart
Network Management and Diagnostic software
system. SpectraSmart™ supervises the
operating parameters of the transmission
system such as status on video levels, sync,
voltage, temperature, FM Carrier Detect,
optical levels, etc., and external equipment
which are attached to the Lascomm equipment.
See the SpectraSmart™ brochure for
more details. |
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| FEATURES
- Surface Mount Technology (SMT) for High
Reliability and Repeatability
- Hot Swappable Cards
- ST™,FC Optical Connector 30MHz Video
- Bandwidth Meets EIARS-170, RS-343A
- SpectraSmart™ Compatible Independent
- Power Supplies @ Channel Meets RS-250C
- Transmission Requirements Compatible with
all NTSC, PAL, orSECAM Systems
- Automatically Resettable Solid-State Current
Limiters on All Power Lines: Provides Equipment
Protection
- Wide Optical Dynamic Range: Optical Attenuators
are Never Required
- BNC Video Connector
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CONFIGURATIONS
The LM195 is available as a rack mount card that
can be installed in all of Lascomm's card chassis,
desk chassis and 19" racking frames. The
LM195 can be converted to a module by installing
it in the SR-500 card chassis. This system can
be configured in either star (module to rack)
ortrunking (rack to rack) configurations. LM195
is compatible with single channel, LM145 units.
This product requires no user adjustments and
features superior quality and performance.
APPLICATIONS
- Security and Surveillance
- Military Communications
- Intelligent Transportation System (ITS)
- Radar
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SPECIFICATIONS |
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Video |
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Format..................................................
Voltage/Impedance................................
Bandwidth.............................................
Differential Gain.....................................
Differential Phase...................................
SNR......................................................
Return Loss...........................................
Field Tilt................................................
Carrier Frequency................................... |
NTSC, PAL, SECAM
1 Vp-p, 75 Ohm, 1.5 Vp-p
max.
5 Hz to 30 MHz @ -3 dB
<2% typical
<2° typical
64 dB weighted*
>30 dB
<0.5% max.
150 MHz |
* 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
2 Pin Terminal Block |
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Power**
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Card...................................................
Module................................................
Adapter for SR-500/S............................ |
3
W
120mA@24VAC
Model WP-24 |
** Due to variations of drivers
and diagnostic options power shown
at maximum measurements |
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Indicators (LEDs)
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Red..................................................... |
Power
On |
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Physical
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Dimensions:
Module (w/SR-500)................................
..........................................................
Card....................................................
..........................................................
Weight:
Module (w/SR-500)................................
Card...................................................
Number of Rack Slots............................
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181 mm(7.15")L,24mm(.95")W
132mm(5.20")H
160 mm (6.3") L,
20 mm (0.8") W
100mm (4") H
900 g (32 oz.)
450 g (16 oz.)
One
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Enviromental
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Operating Temperature..........................
Storage Temperature.............................
Relative Humidity.................................. |
-40°C
to +60°C
-55°C to +85°C
0 to 95% Non-condensing |
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Quality |
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MTBF...................................................
.......................................................... |
>165,000
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* (SLED) |
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| 50/125 |
-18 |
-36 |
18 |
850 |
ST |
34 |
| 50/125 |
-20 |
-36 |
16 |
1300 |
ST |
34 |
| 62.5/125 |
-15 |
-36 |
21 |
850 |
ST |
34 |
| 62.5/125 |
-17 |
-36 |
19 |
1300 |
ST |
34 |
* Distance is limited to fiber
loss, splices |
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