Zte ZXC10 BTSB I1, Руководство по установке

Страница: 163 / 227

Chapter 13 Hardware Installation Check
13-5
the power supply on the rack top.
18. Power cables, ground cables, trunk cables and RF cables should not be broken
or damaged.
19. The labels on both ends of the power cable and ground cable shall be clear and
correct.
20. The bare wires at the connecting terminals and lug handle should be tightly
wrapped with insulating tape or a heat-shrink tube instead of being exposed.
21. The connecting terminals should be equipped with flat washers and spring
washers.
13.5 Checking the E1 Cables
Requirements:
1. E1 cable connectors are reliably installed, without any short-circuit or damage.
2. E1 cables are connected correctly and labeled clearly.
3. No E1 connector gets loose. Test with a multimeter whether the connector shell
and grounding system are well connected. Otherwise, the ring flange of the
connector and shell are in poor contact.
4. The E1 cables on the set top should reserve some margin length. Do not stress
them in case they cannot be reliably connected with the rack connectors when
the cable rack vibrates.
5. E1 cable connectors must be connected reliably.
13.6 Checking the Sensors
Requirements:
1. The temperature/humidity sensor is vertically installed and cables are correctly
connected to the cabinet top.
2. The smog sensor is horizontally installed and cables are correctly connected to
the cabinet top.