Connecting External Backup Fan; Checking Ventilation Covers - R&S N 8000 Series System Manual

4.2

Connecting External Backup Fan

If conditions at the building site make it necessary to deal with larger distances (i.e. over
Note
12 m), an external fan must be used.
The transmitter provides a switched phase for controlling an external contactor. Further-
more if necessary you can connect an external motor protection switch with alarm button
into the cooling disturbance circuit of the transmitter.
Switched phase for external fan

X33.1 = L (line protection 3A)

X33.2 = N

X33.3 = PE
Excess external cooling

44.1

44.2
Fig. 7 Male connector for connecting an external fan
4.3

Checking Ventilation Covers

To ensure that ventilation functions properly inside the transmitter, the interior part of the
transmitter rack has an opening on each side to permit air circulation.
 Make sure that the ventilation covers on the slots in the frame where the amplifiers will
be fitted are open on both sides. Remove the covers if necessary.
2098.0188.72
Chapter 3
- 3.12 -
Installation
E-1