Hitachi CMU Series User Manual page 91

5 USER GUIDE
After a transceiver or terminator has been installed, do not twist the coaxial cable or pull
the clamp.
⇒ As the cable is twisted or pulled, the pin could grind the coaxial cable conductor,
causing defective contact upon vibration.
(2) Tips on clamping coaxial cable connectors
For more information, refer to the manual pertaining to the coaxial cable.
Tighten coaxial cable connectors firmly. Only about one-fourth turn of looseness could
result in defective contact after extended periods of vibration.
Tighten terminator connectors firmly. Remember to check the connectors for tightness
and then retighten them.
⇒ Slightest looseness could result in defective contact.
Instructions on retightening terminator connectors are given below.
<Retightening procedure>
① Remove the rubber boot and connector cap.
② Holding the coaxial connector securely by one hand, clamp the terminator with the
other hand and turn it firmly until it won't go any more.
③ Finally, give additional tightening to the connector and check it for tightness.
④ After tightening, reattach the rubber boot and connector cap.
Tighten cable joints (relay connectors) firmly. Remember to check the joints for
tightness and then retighten them.
⇒ Slightest looseness could result in defective contact.
Instructions on retightening cable joints are given below.
<Retightening procedure>
① Remove the connector cap.
② Turn the connector ring firmly clockwise to clamp.
③ Finally, give additional tightening to the connector and check it for tightness.
④ After tightening, reattach the connector cap.
Transceiver
Coaxial cable
Figure 5-7 Transceiver Installation (2)
Twist
5-6
Pull