User's Manual

Table Of Contents
Installation, Operation and Service Manual 90DIB500R41IM_FCC02 99.1 57
DIB-500 R4.1 Product description
Constituents
3.1.7 Fan unit
The fan unit is a hardware component and consists of one fan subrack per TIB trans-
ceiver module. The fan unit serves for optimum vertical venting of the constituents
installed inside the equipment cabinet and for filtering the dirt and dust particles con-
tained in the air. A fan subrack is made up of a fan and an air filter pad.
Figure 3.21 shows the front view of the fan subrack. The following table describes these
indicators in detail.
Figure 3.21 Front view of fan subrack
9 Antenna B Antenna B (Tx)/Rx antenna connection
10 RxD (TIB B
1
) Antenna B Rx output carrier TIB B
1
(only in the case of
diversity)
11 RxD Ext Interface (input) for connecting the reception paths of
another ACS for diversity reception (with > 4 carriers)
12 RxD (TIB B
2
) Antenna B Rx output carrier TIB B
2
(only in the case of
diversity)
13 Rx (TIB B
1
) Antenna A Rx output carrier TIB B
1
14 Rx Ext Antenna A interface (output) for connecting another ACS
(with > 4 carriers)
15 Rx (TIB B
2
) Antenna A Rx output carrier TIB B
2
16 AUX (TIB B) Interface to the TIB B transceiver module (including voltage
supply)
1) depending on the ACS variant
Table 3.24 Legend: ACS (front view)
No. Supply Description
Table 3.25 Legend: front view of fan subrack
No. Constituent
1Air intake
2 Air filter pad holder including air filter pad
1 1
2