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SPB-485: RS-485 Signal Repeater/Power Booster
Function:
The SPB-485 is a signal repeater and power booster for
RS-485 serial links. Its plastic enclosure makes it ideal for mounting in
remote, unsupervised locations.
RS-485 busses are limited to approx. 5000ft. in
length. The SPB-485 can be used to extend that distance by 5000ft. for every
unit installed. Long serial links can sometimes cause transmission echoes
that result in communications losses. An adjustable echo filter allows these
unwanted echoes to be filtered out.
The SPB-485 can also be used to provide additional
power to field transmitters down the line. This helps to compensate for IIR
losses. By adding additional power through an SPB-485 the wire size of the
RS-485 bus can be kept small.
Specifications:
- Input: RS-485
- Output: RS-485
- Fanout: 32 RS-485 Field Transmitters
- Operating Power: 24 VDC (RS-485 bus or external)
- Enclosure: PVC Plastic
- Operating Temperature: -20 Deg. C. to + 40 Deg. C.
