Installation manual

Chapter 1 Introduction
1.7.22 FRM220-Serial/FDC RS-485/RS-232 Fiber Ring Converter Card
The FRM220-Serial/FDC provides a dual fiber connection converter solution to extend asynchronous RS-485 or
RS-232 transmission distance up to 2km over multimode fiber or up to 120km over single mode fiber. The dual fiber
inputs allow connecting multiple devices in a cascade or "daisy chain" fashion as well as creating ring architecture
for fiber redundancy. The converter is equipped with multiple interface circuits for connection to RS-232 or RS-
485/422 (2 or 4 wire, full or half duplex). The FRM220-Serial/FDC secures data transmission over EMI resistant
fiber at speeds up to 256kbps for RS-232 or up to 1024kbps for RS-485/422. When the FRM220-Serial/FDC card is
placed in the FRM220 rack with SNMP management, in-band management allows viewing the card and remote
converter's status, type, version, fiber link status, data link status and alarms. Both card and remote can be
configured to enable or disable the port and set the interface type.
Features
• Extend asynchronous serial transmission from 2km to 120km over fiber
• In-band management via terminal, GUI or SNMP in FRM220 chassis
• Two fiber ports support daisy chain and ring architecture
• Multi-drop operation over fiber ring
• Software selectable data interface for RS232/ 422/ 485
• Software selectable two wires (half duplex) or four wires (full duplex) RS
• Software selectable three or five wires RS232
• Speeds up to 256kbps for RS232 (Async. mode)
• Speeds up to 1Mbps for RS485/422
Specifications
Ports
Optical Interface
Connector : 2x SFP LC
Data rate : 36.864Mbps
Line coding: Scrambled NRZ
Bit Error Rate: Less than 10
-10
Cable type : MM 62.2/125μm, 50/125μm. SM 9/125μm
Distance : MM 2km, SM 15/30/50/80/120km, WDM 20/40/60/80km
Wavelength: 1310nm, 1550nm,
Electrical Interface
Connector : 6 pins Terminal block
Data Signal Formats
RS485 2-wire
RS422 4-wire
RS232 RTS/CTS 5-wire
RS232 3-wire
Baud Rate:
RS422, RS485 up to 1024kbps
RS232 up to 256kbps
Standard EIA/TIA RS485, RS422, RS232
LEDs Power, FX Link, DI, DO, Test
Power DC In 12V
Power Consumption
< 5W
Dimension (D x W x H) mm 155 x 88 x 23mm
Weight 120g
Temperature
-10~60° C (Operating) ,-20~70° C (Storage)
Humidity 10~95% non-condensing
Certification CE LVD/EMI, FCC, RoHS
MTBF
65,000 h (25° C)
This product includes the following models:
FRM220-Serial/FDC RS485/232 Fiber Ring Media Converter Card
485
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