Radar Field Analyser - RFA641 Edition Date: 28-Feb-18
6.3. Parameters
The power levels at the different locations will be recalculated in function of the set parameters and the delay
of the target.
6.3.1. RFM Parameters
• True Range RFM : Physical range of the RFM
• RFM Antenna Gain : Gain of the external antenna of the RFA or RMU.
• RFM Tx gain: This consists of the gain of the external amplifier if present.
• RFM Rx Attenuator. External attenuator added to the input
6.3.2. Radar Parameters
• Antenna Gain SSR: Antenna gain or the IFF antenna
• TX Power SSR : Tx Power of the interrogator
6.3.3. Target Setup
• 1 Code : Reply Code for Mode1 Interrogations
• 2 Code : Reply Code for Mode2 Interrogations
• 3/A Code: Reply Code for Mode A Interrogations
• Altitude: Generates corresponding reply Code for Mode C Interrogations
• X: Switch X-bit on
• SPI: Switches the SPI bit on
• Transponder Power: Typical transponder power
• Target Range:Actual range of the target. Is used in the radar equation to calculate pathloss. Using
the physical range of the RFM the extra delay that is required is calculated in order to generate the
target at the correct range.
• Reply condition Sets the power difference between P1 and P2 required to start replying.
6.4. Software
Click the Start button to start the RFM function.
Using the trigger level, the minimum level for the detection of interrogations can be set. For each valid
interrogation detected the beeper will be activated, so you will have an auditive feedback of the RFM
operation.
IE-UM-00165-005 RFA641 User Manual.odt 69/110
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