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Fiber Optic Audio Communication Equipment  MODEL LMST/R-2A |
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MODEL LMST/R-2A |
2 Channels of Audio |
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FEATURES
- Two Unidirectional Channels of 24 Bit Digitally Encoded Audio over one Fiber
- Laser Based Systems for Multimode and Singlemode Fiber
- Surface Mount Technology (SMT) for High Reliability and Repeatability
- SpectraSmart Network Management Compatible
- Local LED Status Indicators to Monitor Critical
System Diagnostics and Performance Parameters
- ST, FC Optical Connector
- Hot Swappable Rack Cards
- Back - Biased Photo Detector Circuitry for Stable
Optical Laser Output Over Full Temperature Range
- Meets NEMA TS1 / TS2 & CALTRANS Specifications
- Utilizes Internal Switching Power Supplies
- Automatically Resettable Solid-State Current Limiters
on All Power Lines: Provides Equipment Protection
- Wide Optical Dynamic Range: Optical Attenuators are Never Needed
- 3-pin Screw Terminal Connectors for Audio
DESCRIPTION
This module in the SA product family incorporates all-digital encoding technology and transmits/receives two, 24-bit unidirectional audio channels over one optical fiber. Local indicators
provide visual operational of each audio channel. Convenient 3-pin terminal blocks are used for easy connection of the audio channel interfaces. These single fiber, laser based systems are available in both, Multimode and Singlemode modules. The SC series is also compatible with Lascomm’s SpectraSmart Network management and diagnostic PC based system. See the SpectraSmart brochure for additional details.
CONFIGURATIONS
The SA product family is available as rack mount cards and modules that can be installed in any of Lascomm’s desk chassis 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 transformed in to a standalone module by utilizing an SR-500/S (standard configuration) or an SR-1000/S.
MARKETS
Intelligent transportation systems (ITS)
Security and surveillance
Access Control
TECHNICAL SPECIFICATIONS |
- Audio:
| In/Out Impedance |
600 Ohms (Bal. / Un Bal.) |
| Frequenct Response |
10Hz to 20KHz |
| SNR |
>90dB (Weighted) @ 1KHz |
| In / Out Level |
-6 to +6 dBm (4VP-Pmax.) |
| Total Harmonic Distortion |
< 0.01% @ 1 KHz |
| Intercom |
24 Bit |
- Connectors:
| Video |
75 Ohm BNC (Gold Center Pin) |
| Optical |
ST, FC |
| Power (module) |
See SR-500 Brochure for details |
| Audio |
3-pin Screw Terminal Blocks |
- Enviromental:
| Operating Temperature |
-34oC to +74oC |
| Storage Temperature |
-55oC to +85oC |
| Relative Humidity |
0 to 95% Non-condensing |
- Optical:
| Fiber Data Rate |
250 Mb/s. |
- Indicators (LEDs):
| 1- Green |
Power On |
| 1- Bi-color |
TX Carrier / Laser Over Current |
| 1- Bi-color |
RX Carrier - Present / Error |
| 2- Bi-color |
Audio Present / Overmodulation |
- Physical:
| Dimensions (Card) |
160 mm (6.3”) L, 127 mm (5”) W 20mm (0.80”) W |
| Weight (Card) |
450 gms (16 Oz) |
| No. of Slots |
1 |
| Module |
See SR-500 Brochure |
- Quality:
| MTBF |
>200,000 hours, @ 35oC Ground Fix as per MIL 217F |
- Power:
- Part Numbers:
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OPTICAL
Fiber Type/Size
(um) |
Optical Output
(dBm) |
Receiver Sensitivity
(dBm) |
Optical Budget
(dB) |
Wavelength
(nm) |
Optical
Connector |
Optical Dynamic
Range (dB) |
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Multimode (FP Laser)
62.5 / 125 |
-5 |
-26 |
21 |
1300 / 850 |
ST |
24 |
Singlemode (FP Laser)
9 / 125 |
-5 |
-26 |
21 |
1310 / 1550 |
ST , FC |
24 |
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