Quick Installation Guide
Document
WERA4-Quick-US-200917
Page 15 of 73
4.11.4
Dual-Receive-Input-Filter - DRIN (for 8 channels)
Each RIN module contains band-pass input filters for four receive channels as well as the
relays for the internal calibration and switching filters. Each of the two filters per channel is
designed for a specific frequency and bandwidth to provide optimum noise reduction.
From the outside, the DRIN is mechanically and optically identical to a normal RIN module
and is also connected in the same way. If a DRIN Filter is used in a non-dual frequency
environment (no Software updates, no modified PA) then it can be used as a normal RIN
(default Filter path is active).
4.11.5
Supply for Active Rx Antennas
All Receiver-Input Filters can supply the dc-voltage which is required to use active Rx
antennas. This dc-supply needs to be activated by means of an internal jumper for each
antenna. The RIN module needs to be un-plugged and opened to access these jumpers.
4.12 Calibration
– Splitter (for 12 channel versions only, refer to 4.11.1)
Distribution of
cal signal
to RIN
distribution of supply
voltage to RIN
20V supply voltage
From RER
cal signal for
internal calibration
from RFD
Figure 18:
Cal-Splitter Module
This module distributes the 20 V supply voltage and the calibration signals to the 12
Receiver-Input-Filters modules (RIN)