User's Manual

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Single-mode scan: For this mode, all the devices will be shown independently. No sub-
devices.
Figure 13 Single-mode Scanning with Main Devices only
Multi-mode scan: When BTS/NodeB start scanning with multi-mode, 3 main devices (A, B
and C) are detected first, then their sub-devices (A1, A2, A3, B1, B2, B3, C1, C2, C3) can be
controlled independently.
Figure 14 Multi-mode Scanning with Main Devices & Sub-devices
5.4 IRCU Control Cable, Lightning Protection and Grounding cables
5.4.1 Control cable, Lightning Protection and Grounding requirements
IRCU control cable can connect through SBT or TMA (as shown in Figure 5 (b), (c)), normally
control cable will be short and not more than 2m, lighting protection and grounding will be
implemented along the RF feeder and hence it is not necessary for control cable to carry out
lightning Protection and grounding again.
However, if IRCU and control cable are connected as Figure 5 (a), whereby control cable
connect to RCU directly, then it is necessary for the cable control to proceed with Lightning
Protection and Ground requirement. Details as follows: