Cable and Connector Testing Procedures. Permalert PAL-AT AT40K, PAL-AT AT50C, PAL-AT AT80K, PAL-AT AT20C, PAL-AT AT20K

7 Cable Connectors

7.4 Cable and Connector Testing Procedures

7.4.1 General

The following tests should be performed on each length of cable after both connectors are installed.

Figure 18 illustrates the tests. Any overbraid or outer jacket is not shown.

7.4.2 Continuity Test

The continuity test checks for broken cable, open connectors, and poor solder connections.

1. Connect a short jumper wire with alligator clips between the UHF connector’s center contact and the body of the connector at one end of the cable, as shown in Figure 18. Note: Do not clip onto the threaded coupling ring because it is not tightly secured and will give intermittent readings .

2. Connect the ohmmeter's test leads to the connector’s center contact and connector body on the other end of the cable.

3. The ohmmeter reading should be less than 10 ohms/1000' of cable. If it is not, check the jumper wire, test lead connections, and repeat the test. If the problem persists, contact the PermAlert Field

Service Department for assistance.

7.4.3 Insulation Test

The insulation test checks for a short between the center conductor and outer braid shield.

1. Remove the jumper wire used in the continuity test, as shown in Figure 18 and connect one ohmmeter test lead to the connector's center contact and the other lead to the connector body.

2. A good cable will give a full-scale reading (at least 10 megohms). Test readings below full scale indicate damaged cable or an improperly installed connector. If you cannot resolve the problem, contact PermAlert's Field Service Department for assistance.

7.4.4 Alternative System Test

1. Connect the entire cable string to the PAL-AT panel.

2. Make sure the panel is turned off and the cable card is installed.

3. Measure the resistance at the far end of the cable string. Connect one test lead to the center contact of the last connector and the other lead to the connector body. It should measure less than 60 ohms

+ 10 ohms/1000' of cable string.

Figure 18

Cable Test Procedures

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