Testing Coaxial Cable And Bnc Connections - Iteris RZ4 Advanced Installation Manual

8. Slide the outer ferrule over the braid and against the connector body. Crimp the outer ferrule in
place using an Ideal Industries 30‐483 coax crimping tool. Crimp the ferrule in two locations as
shown in the diagram "Final Crimping of the BNC Ferrule" in the following section.
9. Apply a five‐pound pull test to verify that the connector is crimped securely.

4.4.3 Testing Coaxial Cable and BNC Connections

1. Verify that the coaxial cable is not touching the cabinet or signal pole.
2. Check for short circuit on the coax cable assembly using a multimeter. Set your multimeter to the
'ohms' (resistance) measurement setting. At the processor end of the cable run put one probe on the
center pin and the other probe on the outer BNC connector body. A resistance measurement of less
than 15Ω indicates a possible short circuit. A resistance measurement of more than 500kΩ indicates a
possible open circuit. If the resistance measurement is outside the range indicated check the BNC and
camera connections and the integrity of the coax cable. Be aware that some open connections can be
intermittent making them more difficult to diagnose.
Figure 4.17
Crimp Here
Ferrule
Figure 4.16
Final Crimping of the BNC Ferrule
This picture shows the technique for checking the BNC
connector using a multimeter. One meter lead probe is
on the BNC center pin, the other meter lead probe is
touching the BNC body. The mutimeter should be set to
ohms or continuity.
Crimp Here
BNC Connector
Body
9