Reference Manual

Unit Description, TMA-CM

The TMA is always used together with its connection cable and

connection plate for Bias injectors. The connection plate contains

ﬁltering equipment.

An indicator on the front panel is lit for each TMA in operational mode.

Whether an indicator is lit dpeends also on the actual conﬁguration,

see

Chapter Radio Conﬁgurations, RBS 2106 and RBS 2206.

If the TMA or the feeder cable is short-circuited, the TMA-CM limits

the current to 500 mA.

The power cable to the Bias Injector is supervised and an alarm is

generated if the cable is not connected. The alarm is transmitted on the

IOM bus.

11.3 External Interfaces

P008300A

Fault

Oper.

TMA oper.

A pow

TMA CM-01

Figure 96 TMA-CM

The TMA-CM has the following external interfaces:

• Power in (+24 V DC)

• IOM-bus

• TMA power connector

168 (485)

EN/LZT 720 0008 P2A

2001-11-28

Preliminary