The RLH Serial Data DIN Fiber Link system transports two active channels of copper serial data over fiber optic cable, allowing for both RS-232 and RS-485/422 to be used at the same time. Fiber optics not only provide long distance communication up to 74 mi. (120km), but also provide immunity to EM/RFI and transient surges. This is ideal for extending serial data communications over long distances, or near large electrical equipment where resistance to EMI is desired.

A comprehensive set of LED’s on the front panel indicate power status, fiber status, RS-232 and RS-485/422 activity. Powering options include our standard 24-48VDC, or high range DC powering of 125VDC. This rugged system also features redundant power inputs with a system alarm contact, and comes standard with DIN clip and wall mount ears.

SDD-03-2
SDD-04-2
SDD-40-2
SDD-41-2
SDD-45-2
SDD-50-2
SDD-51-2
SDD-55-2
SDD-10-2
SDD-11-2
SDD-14-2
SDD-15-2

• Supports 2 active channels of serial data
• Simultaneously transmits both RS-232 and RS485/422
• Convenient LEDs for power, fiber, and serial signals
• Supports baud rates of 50 bps to 921.6 Kbps baud
• Extends communication up to 74 mi. (120km)
• Transparent RS-232 & RS-485/422 extension over fiber
• Supports 2 & 4 Wire RS-485 operation
• DC power alarm contact
• Dual redundant power inputs
• Rugged design for wide operating temperature is standard
• Protocols tested: DNP, Modbus, DF1
• DIN or wall mount with included wall mount accessories
• Singlemode and multimode models available
• Limited Lifetime Warranty
• Made in USA

Transmission Method:
Frequency modulated light via two optical fibers

Wavelength:
Multimode: 850nm
Singlemode: 1310nm, 1550nm

Bi-Directional Connector Fiber Type/Distance:
Multimode: (62.5/125µm) 1.24 mi. (2 km), (50/125µm): 1.24 mi./2km
Singlemode: (9/125µm) 12.4mi /20km, 37mi / 60km

Dual Fiber Connector Fiber Type/Distance:
Multimode (62.5/125µm): 1.24 mi./2km, (50/125µm): 1.24mi./2km
Singlemode (9/125µm): up to 74.5mi/120km

Fiber Connector Type:
ST or SC

Powering:
24~48VDC / 125VDC
Dual Redundant Power Inputs

Protocols:
Serial RS-232 & RS-485/422 Data

Dimensions:
H 4.93” x W 1.20” x D 3.93” (not including DIN clip)
Standard T-35 DIN rail mounting or wall mount with included brackets

Operating Temperature:
-25˚C ~ 70˚C (-13˚F ~ 158˚F)