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VLM-500 Asynchronous RS-232 Fiber Optic Modem Description:
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The VLM-500 RS-232 fiber optic modem is designed to provide low-cost fiber connectivity for data communication equipment with RS-232 interface. A pair of VLM-500 fiber optic modem can transmit asynchronous data at rates up to 64K bps with typical 20 dBm optical link margin. The modem features a DTE/DCE switch and DB25 female connector. This allows it to be directly connected to most standard RS-232 interface without external cabling.The optical signal of the VLM-500 optic modem can be controlled by the RTS signal. This feature allows multiple slave VLM-500 modem to be connected to one master VLM-500 through the use of optical coupler.

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VLM-500 Asynchronous RS-232 Fiber Optic Modem Features:

Asynchronous Data up to 64 Kbps
DTE/DCE Switchable
20 dB Typical Optical Link Margin
Controlled Optical Signal

Link/Data/Power Indicator
No External Power Required
VLM-500 Asynchronous RS-232 Fiber Optic Modem Specifications:
 
Electrical
Physical
Interface: RS-232 Dimensions: 3.6(L)in x 2.1(W)in x 0.8(H)in
Data Rate: Asynchronous 0 to 64Kbps Weight: 0.5 lb
Connector: DB-25 female
System
Signal: TD, RD, RTS, CTS, DTR, DSR Power Supply: 9 VDC @ 100 mA optional
Optical
Humidity: 5% to 95% non-condensing
Wave Length: 850 nm multimode Temperature Range: 0°C to 60°C - Operating
10°C to 85°C - Storage
TX Power: 20.0 dBm (min.) into 62.5mm cable w/12 VDC external power
RX Sensitivity: 40.0 dBm (max.)
Connector: ST

 

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