FIBER OPTIC RS-232/422/485 MULTI-DROP SYSTEM

FEATURES Master /Slave Multi-Drop system Choice of RS-232, RS-422 or RS-485 EIA interfaces Bus or Ring System Topology Async Data Rates up to 38.4 Kbps 4-60 Km Range over Full-Duplex Fiber Multimode or Singlemode (865, 1310, or 1550nm) Operation Over 2 Fibers Self-Healing capability Anti-Streaming (anti-jabber)

GENERAL

The Opticomm DS-120-DR multi-drop fiber optical data sets are designed to connect multiple equipment with the RS-232/422/485 interface. The data sets consist of one Master unit and at least one Slave. Both Master and Slave units provide one port with data rates up to 38.4 Kbps. The Master unit has one optical channel and the Slave unit has two optical channels; channel A and channel B. All optical channels can be 865 nm or 1310 nm, and are compatible with all sizes of multimode and single-mode fibers. The DS-120-DR is ideal for traffic control, industrial process control, and security systems that are configured for bus or ring topologies. The fiber modems regenerate fiber optic signals and provide greater system loss budgets, and increased distances.

SYSTEM DESIGN

The DS-120-DR series is connected to SCADA host poll equipment through the RS-232/422/485 interface. It transmits the host's data and control signals on the optical channel to all the Slave units. The Opticomm DS-120-DR Stand Alone series is powered with 12 V_DC (+24 V_DC, -48 V_DC optional). The DS-120-DR Insert Card units are powered by single or redundant 110/220 V_AC power supply in the CC-10 19" Rack Mount. In "Bus" configuration, the Slave unit receives data/control signals from the SCADA host's channel A, and loops through channel B to the next Slave unit. Slave responds with an RTS signal.

In "Ring" configuration, channel B can be used as a counter-rotating ring. The SCADA host polls every Slave, the Slave responds by an RTS signal, then transmits data/control signals on channel A instead of looping through channel B.

PRODUCTS

	DS-120-DR-B Master/Slave Bus config.
	DS-120-DR-R Master/Slave Ring config.

ADD SUFFIXES

L0 - 865 nm LED, MM
L1- 1310 nm LED, MM
L2E - 1310 nm ELED, SM
L2 - 1310 nm Laser, SM
L3 - 1550 nm Laser, SM (Optional)
SA - Stand Alone
IC - Insert Card

Specifications