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Major Convenience Store uses Custom 9POP4 Isolator to Protect Equipment and Gas Pump Data

Isolate and protect your serial equipment

Optical Isolation protects your equipment from dangerous ground loops, spikes and surges.

Ground loops are surges of electricity caused when the grounding points of different pieces of equipment are at different voltage levels, but a data line connects the pieces of equipment. Spikes are voltage fluctuations of very short duration, but of high voltage. Surges are elevated voltage levels of longer duration than spikes.

Any of these misfortunes can scramble data or damage boards. Ground loops, spikes and surges can be stopped by inserting an optical isolation component in the data line. Optical isolation works by changing the electronic data signal to a flash of light from an LED. A photosensitive transistor receives the light, re-powers it and sends it on its way. Since no electricity crosses the optical isolator, only light, your data and equipment are safe.

Home > Products > Serial Connectivity > Serial Data Isolation and Range Extension > Isolated RS-232 Repeaters

Optical isolators to suit almost any application

Model 485OPB optically isolates and protects equipment and also acts as a signal repeater to extend the range of RS-422/485 data lines another 4,000 feet (1,200m). On RS-485 circuits, it allows more than 32 nodes to be used. It works on 2-wire or 4-wire systems. It can also join 4-wire RS-422 with 2-wire RS-485 systems, simplifying the job and saving the cost of another converter. A 12VDC power supply is required.

Model 232SPHI4 has 4000 volts of isolation — twice the rating of most isolators — to protect RS-232 equipment from lightning strikes, accidental high voltage shorts and ground loops. Model 9SPOP2 is a port powered two-channel isolator with a 2500V protection level. Model 9POP4 offers 4 channels of isolation and requires a single external 12 VDC power supply to power both sides, ideal for the low powered ports on laptops and newer PCs.

Model Number	Description	Channels Protected	Connector to DTE	Connector to DCE	Max kbps	Power Source		Price Change to GBP
232SPHI4	High Speed 4KV Optical Isolator	Four	DB25F	DB25M	115.2	Port-Powered	Datasheet Dimensions Figure DoC Photo Accessory List	Euro 85.16
9SPOP2	9-Pin Port Powered Optical Isolator	Two	DB9F	DB9M	115.2	Port-Powered	Datasheet Dimensions Figure DoC Photo	Euro 61.72
9POP4	9-Pin Non-Port Powered Optical Isolator	Four	DB9F	DB9M	115.2	PS1EU-1000 or PS1UK-1000	Datasheet Quick Start Guide Schematic DoC Photo Accessory List	Euro 61.72
485OPB	RS-422/485 Optically Isolated Repeater, 2 or 4 wire	Four	Terminal Block	Terminal Block	460.8	PS2EU-1000 or PS2UK-1000 (not included)	Datasheet DoC Photo	Euro 116.41

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