Radar Field Analyser - RFA641 Edition Date: 28-Feb-18
6. REMOTE FIELD MONITOR
6.1. Theory
The Remote Field Monitor function is available for both the Radar Field Analyser and the RF Maintenance
Unit (RMU484). It consists of a programmable transponder function capable of supporting Mode 1,2,3/A,C
interrogation modes. The software supports to set up a fixed target or a target following a programmable
radial scenario.
6.2. Getting Started
The Remote Field Monitor function is loaded from the RASS-S Toolbox using the RFM button (in the
list the function is called RFA&RMU Remote Field Monitor for SSR).
Make the connections as shown in Annex 8: RFM Function Connection Diagram.
The RMU/RFA is connected to the antenna using a 20dB coupler (ZFDC-20-5). The interrogations received
from the antenna are injected in the input port of the coupler. The coupler port is connected to the SSR Rx
input (RMU) or through the YIG filter to the transceiver Rx port (RFA). Add sufficient attenuation if required to
get within the RMU/RFA Rx input range. The Tx output of the RFA/RMU is connected to the Out port of the
coupler in order to be able to transmit through the antenna.
IE-UM-00165-005 RFA641 User Manual.odt 68/110
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