Doppler Weather Radar - METNET - India Meteorological Department

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2. Summary of the test method The antenna peak power will be observed at the forward power 30 dB coupler on the top of the pedestal, which feeds the Antenna. A test cable with calibrated loss will be used along with a calibrated Power Meter. A special test program will be used in the RCP8 computer to create constant Transmitter Triggers. The Peak power out will be measured. 3. Test procedure Antenna Peak Power (1) Start the system and run the system in the normal operating state. Elevation Rotary Joint Directional Coupler Fixed Attenuator (30dB) RF Power Meter Figure C.5 (2) Run the signal processor testing program, Set pulse width and PRF. (3) Press the “High voltage On” button to switch on high voltage. (4) Connect the RF power meter, Agilent N1921A, through a 30dB fixed attenuator to the forward power connector of the directional coupler as shown in the above Figure 17. (5) Measure the Peak RF Power. (6) Press the “High voltage Off” button to switch off high voltage. 4. Test result PRF and peak power are to be measured for both long pulse and short pulse and recorded. C.3. ARC Detector Test This test is conducted to check the detector circuitry functionality. 1. Perform RDA power-down procedures given in 6.52 of manual 510 (given below) 2. Press the LOCAL/REMOTE CTRL switch on the Tx Control panel so that the local control indicator lights.. 3. Press the ARC TEST switch on the TX control panel. 78
4. Observe that the PFN voltage goes to zero, focus coil current goes to zero and high voltage goes off. 5. Observe that the waveguide arc indicator is illuminated at the fault display panel. 6. Observe that the FAULT and MANUAL RESET indicators at the cabinet top are illuminated. 7. Press MANUAL RESET switch and FAULT DISPLAY RESET switch. 8. Observe that the three indicators listed in step No.5 goes off. 9. Press the LOCAL/REMOTE CTRL switch on the Tx Control panel so that the remote control indicator lights up. Restore the system to normal operation by performing the RDA power-on procedures given in 6.5.3 of manual 510. 79
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Ministry of Earth Sciences INDIA ME
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Preface Introduction Definitions Pu
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3.8 To copy RAW DATA 35 3.9 Procedu
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B.3.3 Velocity Products 69 B.3.4 Hy
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PREFACE India Meteorological Depart
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DEFINITION An important aspect of a
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MONITORING OF DWR SYSTEM CHAPTER 1
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Before controlling radar operations
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5. Power Cabinet: “SERVO POWER AM
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9. Checking real time displays:-The
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2. In Modem, PMA always shows off w
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This can be done by “telnet” co
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drwxr-xr-x 3 501 500 4096 Aug 10 02
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Figure 1.8 Connecting to MAIN serve
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Thus now the tasks are configured a
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STEP 1 : Invoke “iris” though t
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STEP 6 : Skip time : This is the ti
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3. Edit the Product as needed , the
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(ii) SC. (E) In-Charge Radar Lab, D
Page 39 and 40: Station and print-out (except Daily
Page 41 and 42: 2.2.5. A-log book Details of all ad
Page 43 and 44: Table 2.8 VPN connectivity status S
Page 45 and 46: Step-II. connected Copy image files
Page 47 and 48: 3.7. To search for a file [operator
Page 49 and 50: PCO name: IMD-B, TCO name: IMD-B PR
Page 51 and 52: # Filename: transmet_gif # Sends fi
Page 53 and 54: 9. To liaise with other DWR station
Page 55 and 56: • Detection of deterioration caus
Page 57 and 58: ack-mounted modules which do not re
Page 59 and 60: Screenshot 2 : Calibration Control
Page 61 and 62: Antenna Waveguide Switch, Circulato
Page 63 and 64: 4.3.3 Bitex data point configuratio
Page 65 and 66: APPENDIX A AN OVERVIEW OF DOPPLER W
Page 67 and 68: A.1.1. Future IMD Radar Network pla
Page 69 and 70: IRIS/Display Installed at remote wo
Page 71 and 72: APPENDIX B WSR 98D/S DWR SYSTEM CHA
Page 73 and 74: e. Elevation limits -- Upper and lo
Page 75 and 76: B.1.9. Calibrations and health moni
Page 77 and 78: B.2.6. Unambiguous range a. Reflect
Page 79 and 80: The System is capable of generating
Page 81 and 82: 1. System generates hail, thunderst
Page 83 and 84: 1.5. There is provision of DVD Writ
Page 85 and 86: 6. Wait for ten minutes. Calibrate
Page 87 and 88: SA9-15 Current at position 15 of A1
Page 89: Test procedure (1) Type the “zaut
Page 93 and 94: Table D.1. PPI and RHI scanning typ
Page 95 and 96: According to the need of IMD, purpo
Page 97 and 98: Chennai@8min, Machilipatnam, Vishak
Page 99 and 100: D.2.5. Scan strategies being follow
Page 101 and 102: High Voltage (Power On) Avoid conta
Page 103 and 104: Average power densities less than 5
Page 105 and 106: E.3. Antenna/Pedestal Safety WARNIN
Page 107 and 108: ACKNOWLEDGEMENTS Several experts ha
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