Huawei provides the RF cable suite according to the actual BTS configuration. Each cable has a number at either end, indicating where the end shall be connected (make sure that the terminal silkscreen on the panel is proper).1. Do not bend a cable sharply in a too small bending radius, risking damage on the cable. The appropriate bending radius is greater than 3 cm. Screw a SMA load on an idle SMA port of a combiner/divider. Be careful to connect the matched load to an output port of a divider to avoid an open signal output circuit during the service. Check the cable routing. Make sure that all RF connectors are installed. Prevent dummy connection from affecting the system service.2. Tighten an RF connector using a spanner by appropriate force. Do not over-tighten or under-tighten it. Impart different torques to different types of connectors.The receiving cable from the divider output port of a CDU to the RX input port of a TRX has a SMA connector at either end. The transmitting cable from the power output port of a TRX to the TX1/TX2 port of a CDU has an N connector at either end. The soft jumper from the antenna receiving/transmitting port of a CDU to the top of the BTS312 cabinet has a 7/16DIN connector (to the cabinet top) and a N connector (to the CDU).Recommended torques for the various types of connectors are as follows:SMA: 0.6~1.8 N?m Recommended tool and manufacturer: 74Z-0-0-21 (Huber-Suhner)N: 0.7~1.1 N?m Recommended tool and manufacturer: 74Z-0-0-193 (Huber-Suhner)7/16DIN: 25~30 N?m
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