How to Specify - Overview

Determining which CYLIX Data Line Surge Suppressor is correct for your application

IF THE SPECIFIC APPLICATION IS KNOWN

If the specific application is known (e.g.: Ethernet, Token Ring, Arcnet, RS232, RS422, lease-line or dial-up Telco, etc.), then this is generally enough information to find your application in our literature. In defining the application there may be additional information required.

For example, in Ethernet networks, find out if the requirement is for 10BASE T, 10BASE 2, or 10BASE 5. We have specific products to match most common datacom applications and a Custom Products Division to provide for specialty applications.

IF THE SPECIFIC APPLICATION IS NOT KNOWN

1. What type of connector is being used in the application?

For Coaxial or Twinaxial applications using "F", "N" or "BNC" connectors, refer to our "CCP" Series. If the connectors are RJ11 or RJ45 modular jacks on twisted pair cable, look to our "MTJ" Series for single port or our "DDP" Series for multi-port protection.

If your application uses 9, 15, or 25 pin "D- subminiature" or "Centronics" 36 pin connectors look to our "SIP" Series. For applications calling for hard-wiring (without connectors), refer to our "TSP" Series for terminal strip protection.

2. How many wires are required to be protected?

In the CCP Series, there is line and shield for Coaxial products and two lines and shield for Twinaxial products. MTJ Series protection ranges from 2 wires (1 pair) to 8 wires (4 pairs). Our DDP Series protects all wires on each RJ11 or RJ45 port and all 50 wires (25 pairs) for RJ21 applications.

While offering all wire protection for DB9, DB15, DB25 and Centronics applications, our SIP Series also offers specific, 4 and 8 wire protection for DB25's. Perhaps the best example of the importance in knowing the number of wires requiring protection is our TSP Series in which we have protectors that protect from 2 to 32 wires.

3. What "clamping voltage" is required?

"Clamping voltage" is the highest amount of voltage allowed through the protector (to equipment) before higher, damaging voltages are passed safely off the system through ground. This voltage is as close as practical over the transmission voltage of the signal being protected. Ethernet is a good example with transmission voltages at approximately 5 volts and the Cylix protector clamping at 7.5 volts.

To determine the proper clamping voltage, find the transmission voltage of the signal and use the next highest voltage as illustrated in our "Clamp Voltage" section. Cylix uses five standard clamping voltages, symbolized by letters; "E" for 7.5 Volts, "T" for 18 Volts, "A" for 27 Volts, "B" for 60 Volts, and "G" for 240 Volts.

Some of the most common applications for each voltage are: E (7.5 Volts) for Ethernet, CATV, and RS422/RS423/RS485. T (18 Volts) for Token Ring, RS232, Digital 4-20mA Current Loop, and Satellite TV. A (27 Volts) for Arcnet, Analog 4-20mA Current Loop. B (60 Volts) for Leased Lines, T-1, and ISDN, G (240 Volts) for dial up voice lines, modem, and fax lines.

For Example: An application that uses unshielded twisted pair cable, modular telephone RJ45 connectors, using all 8 wires, with an operating voltage of 5 Volts.

FOR ANSWERS TO YOUR QUESTIONS OR TO PLACE YOUR ORDER, CONTACT CYLIX TECHNICAL SUPPORT AT (800) 877-3735 OR CLICK HERE TO JUMP TO THE CONTACT PAGE FOR ADDITIONAL OPTIONS.