Intersoft Electronics RFA641

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Radar Field Analyser - RFA641 Edition Date: 28-Feb-18

For each index the following information is presented:

– Reply video in Volts or dBm

– Interrogation number

– Max and min reply voltage level and power level.

– Detailed interrogation information.

– Detailed reply information, decoded from the reply video.

The full 256 μs window is stored for each interrogation, so it can contain the full Mode S reply

waveform. Video can be viewed in voltage or dBm power according to the receiver used for the

logging (RFA receiver). Select the interrogation of interest by moving the index slider. The info will

be updated accordingly.

IE-UM-00165-005 RFA641 User Manual.odt 83/110

Main Page

Table of Contents4
Technical Manual Rfa64113
General Introduction13
Key Features13
Hardware Description14
Block Diagram14
Connectors and Specifications14
Figure 1: Block Diagram14
Table 1: Interfaces14
Table 2: Transmitter15
Table 3: Receiver15
Table 4: YIG Preselector Filter15
Self Test /Calibration16
Theory16
Software16
Getting Started16
Figure 2: RFA Selftest Software16
Figure 3: Device Information16
Internal Tx Calibration Method17
Figure 4: Selecting the Calibration Method17
Figure 5: Measured YIG Filter Attenuation18
External Tx Calibration Method19
Figure 6: LRU499 Calibration Table19
Figure 7: LRU499 Device Information19
Troubleshooting20
Plink21
Theory21
Getting Started21
Software22
Figure 8: Uplink Software22
Figure 9: Measurement Type Selection22
Figure 10: Recording Path22
Figure 11: Uplink Scope View23
Figure 12: Uplink Pulse Program24
The Frequency Sweep Function25
Figure 13: Frequency Sweep Function25
Figure 14: Frequency Sweep Y-Axis Selection25
RFA Recorder: Using the External Video Input26
Figure 15: HPD Parameters26
Figure 16: External Receiver Calibration27
Figure 17: LRU External Calibration27
View Recorded Pulses28
RFA Data Analysis: Create Hpds from a Pulse Recording28
View RFA Pulses28
Figure 18: View RFA Pulses Software28
Figure 19: View Scope Recording29
Figure 20: PSR Pulse File Example30
Figure 21: SSR Pulse File Example30
Figure 22: Pulse Scope Graph30
Figure 23: Select Pulses for HPD Extraction31
Figure 24: View Timing Window: Extracting the Stagger Pattern31
Figure 25: Classical Ssr/Mode-S Selection32
Figure 26: Stagger Pattern Selection32
Extracting and Logging the HPD Diagram33
Figure 27: Random Stagger Pattern33
Figure 28: HPD Extraction Method33
Figure 29: HPD Extraction Threshold Control33
Figure 30: Extracted HPD34
Figure 31: Revolution Time, Unsuccessful Extraction34
Figure 32: HPD out of Tolerance Data35
Averaging Multiple HPD Diagrams36
Figure 33: Log Panel36
Figure 34: Averaging Hpd's37
Figure 35: Aligning HPD with Reference37
User Defined OTD Limits38
Figure 36: Averaged HPD Result38
Figure 37: Calculate OTD Parameters Window38
Figure 38: OTD Definition File39
Figure 39: Make Default File Checkbox39
View HPD Logfiles40
View (M)SSR Uplink Logfiles40
Figure 40: View HPD Logfiles Program40
Figure 41: Layer Tabs and Selectors40
User Defined OTD Limits41
Figure 42: Antenna Diagram Data in TAB-Separated File41
Troubleshooting42
Receiver Measurements43
Radar Rx Calibration43
Theory43
Getting Started43
Figure 43: Rx Calibration Software43
Software44
Figure 44: Verifying the Connections45
Figure 45: Rx Calibration Example45
Troubleshooting46
Rx Bandwidth Measurement46
Theory46
Getting Started46
Software47
Figure 46: Receiver Bandwidth Measurement Software47
Figure 47: Verifying the Connections48
Figure 48: Bandwidth Measurement Result48
Troubleshooting49
STC/DSTC Calibration49
Theory49
Getting Started49
Software50
Figure 49: STC/DSTC Calibration Software50
Figure 50: Verifying the Connections51
Figure 51: STC Measurement Result51
Sectorial STC52
Theory52
Getting Started52
Figure 52: Sectorial STC Software52
Software53
Figure 53: Set Sampling Point of Test Pulse54
Figure 54: Verifying the Connections54
Figure 55: Sectorial STC Result55
Figure 56: XYZ Graph Controls55
Sectorial DSTC56
Theory56
Getting Started56
Software56
Figure 57: Sectorial DSTC Software56
Figure 58: Set Sampling Point of Test Pulse57
Figure 59: Verifying the Connections58
Figure 60: XYZ Graph Controls58
View Rx Calibration59
Theory59
Getting Started59
Software59
Figure 61: View Receiver Calibration Software59
Figure 62: Viewing a Receiver Calibration Result60
Viewing Sectorial STC and DSTC Measurement Files61
Figure 63: Receiver Calibration File Attributes61
Figure 64: Inventory Software62
Figure 65: Load S4 File62
Figure 66: 3D View (Inventory)63
Figure 67: Example Filter by Radial64
Figure 68: Define Custom View64
Figure 69: Axis Selection65
Figure 70: Set X-Axis Scale to Logarithmic65
Figure 71: Power Vs Time View65
Downlink Measurement66
Theory66
Getting Started66
Software66
Figure 72: Uplink Software66
Figure 73: Preferences Window67
Figure 74: Uplink Program Transmitting SAM Pulses (Default Settings)67
Remote Field Monitor68
Theory68
Getting Started68
Figure 75: Remote Field Monitor Software68
Parameters69
RFM Parameters69
Radar Parameters69
Target Setup69
Software69
Figure 76: Adjust Trigger Level (RFM Setup)70
Figure 77: Define Moving Scenario71
Figure 78: Remote Field Monitor - Moving Scenario71
Out Beam Interference Generator (Fruit)72
Theory72
Getting Started72
Figure 79: Interference Generator Software72
Figure 80: Warning Message: RFA Not Found72
Software73
FRUIT Type73
FRUIT Content74
Figure 81: Recalculating Fruit Rate Limit74
Power & Rate75
Figure 82: FRUIT Content Set-Up75
Figure 83: Power & Rate Set-Up76
Rfa Transponder Interrogator77
Theory77
Getting Started77
Software77
Figure 84: RFA Transponder Interrogator Software77
Figure 85: Interrogation Controls78
Figure 86: Interrogation Type78
Figure 87: RFA Transponder Tests - Uplink Formats78
Figure 88: Specific Interrogation Fields78
Figure 89: MA Field79
Figure 90: UF24 Fields79
Figure 91: Interrogation List79
Figure 92: Reply Video Window80
Figure 93: Decoded Reply Video80
Viewing the Logged Interrogation-Reply Data81
Figure 94: Reply Video Logging81
Figure 95: Print Interrogation Tables81
Figure 96: View Transponder Test Data Software82
Figure 97: View Interrogation Results Example82
Rfa for Ads-B Main Control84
Theory84
Figure 98: RFA641 Connected to RIM782 Showing the ADS-B Plots on a Laptop84
Figure 99: Test Scenario Definition and Transponder Properties84
Figure 100: RASS-S Analysis Tools Showing ADS-B Cat 21 Data of Heavily Garbled Squitter Replies85
Figure 101: ADS-B Extended Squitter Replies with 9 Overlapping SSR Replies85
Key Specifications86
General Specifications86
Target Types86
Scenario86
Recording86
Analysis86
Software87
Trajectory Scenario Generator87
Running the Compiled Software87
Figure 102: RFA ADS-B Control Software87
Primary Target Injection88
Theory88
Calculation of External Attenuation88
General Concepts89
Figure 103: Example Test Flight89
Figure 104: Calculation of Echo Signal89
Software Principles90
Figure 105: Calculation of Target Power90
Figure 106: VPD and HPD Diagrams90
Trajectory Scenario Generator91
Scenario Replay91
Getting Started91
Scenario Selection92
Vertical Diagram Selection92
Figure 107: RFA PSR Target Generator92
Figure 108: RFA Not Found Warning Message92
Parameter Setup93
Figure 109: VPD Example93
Figure 110: Swirling Type I,II (Left) and Type III,IV (Right)94
Determining the Effect of Parameters95
Compilation of Scenario95
Figure 111: Parameter Simulator95
Figure 112: Selecting the Scenario96
Figure 113: Scenario Compilation96
Annexes98
Annex 1: Critical Parameters of SSR Antennas98
Annex 2: Uplink Connection Diagram99
Figure 114: Uplink Connection Diagram99
Annex 3: Rx, Bandwidth and STC Calibration Connection Diagram100
Figure 115: Rx, Bandwidth and STC Calibration Connection Diagram100
Annex 4: DSTC Calibration Connection Diagram101
Figure 116: DSTC Calibration Connection Diagram101
Annex 5: Sectorial STC Calibration Connection Diagram102
Figure 117: Sectorial STC Calibration Connection Diagram102
Annex 6: Sectorial DSTC Calibration Connection Diagram103
Figure 118: Sectorial DSTC Calibration Connection Diagram103
Annex 7: RFA641 Downlink Connection Diagram104
Figure 119: RFA641 Downlink Connection Diagram104
Annex 8: RFM Function Connection Diagram105
Figure 120: RFM Function Connection Diagram105
Annex 9: Out-Beam Interference Generation Connection Diagram106
Figure 121: Out-Beam Interference Generation Connection Diagram106
Annex 10: RFA Transponder Interrogator Connection Diagram107
Figure 122: RFA Transponder Interrogator Connection Diagram107
Annex 11: RFA for ADS-B Connection Diagram108
Figure 123: RFA for ADS-B Connection Diagram108
Annex 12: RFA Primary Target Injection Connection Diagram109
Figure 124: RFA Primary Target Injection Connection Diagram109
Annex 13: Configuration List110

Intersoft Electronics RFA641 - Page 83

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