Doppler Weather Radar - METNET - India Meteorological Department

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1. Modem, converter and router are to be kept switched on (24X7) all days. UPS or generator supply must be connected to power these units. 2. Glowing green LED at the modem (line) indicates VPN line is ‘OK”; at any time either this green blinking or PMA indicator glows ‘red’, then appropriate action should be taken with VPN service provider to activate the VPN line at the earliest. 3. During data transmission through VPN, if there is any problem in the VPN line l, call the principal service provider i.e. M/s Trimax/DataCraft Engineer for earliest rectification of the fault. 4. For uninterrupted data transmission time to time following observations should be made, round the clock every now and then (i) VPN Modem power and line indicator must glow green. (ii) Network serial router, switch, computer server (Transmission), must be kept ensured to be working OK. 1.6. Connection among modem ,router and switch box All these three untis are interconnected as follows: (Indicative in nature varies with make and type). 1.6.1. L.E.D. illumination status of Modem, Router and Switch box in working condition Note: Figure 1.5 Modem, router front side and switch box back side view 1. When VPN connection is o.k, the connected link LEDs i.e No 1 to 7 in the above picture must always be blinking green. These blinking LEDs are shown in green background for the sake of clarity, and continuous glowing orange LEDs are show in orange background. 8
2. In Modem, PMA always shows off when VPN is working in condition. If PMA glows red, an indication of link problem, power OFF & ON the modem to rule out the misbehavior of the unit. If problem still persists lodge a complaint with the service provider and follow up till rectification is done. On case of delay contact to IMD Telecom section and DDGM(UI) giving the docket number and status for further action. 1.6.2. Connections of VPN circuit (Example) Figure 1.6 Modem, Router back Side and switch box front side view 1.6.3. Checking vpn connectivity Whenever products are not updated in the IMD website, there are two intermediate cases. In the first case, the products reach up to FTP server, but not up to IMD website. 1.6.3.1. If the products are not getting updated on IMD website only Case (A): Product Imageries available on ftp server: make phone call to the Duty officer of DGM Telecom at 011-24693186 or to the one notified. Meanwhile send the required latest imageries from internet web server to IMD web site, I.P 125.21.185.11 (or to the one notified) through local scripts (CLI) and continue sending hourly till VPN is restored. Case (B): product is not reaching the FTP server At the <strong>Radar</strong> main server perform the following Run iris connect to mainmenus product output window device TRANS_GIF product type product to be sentselect headers onlyright click under request columnselect Station name in the opened window and exit. Same to be repeated in standby server also. Connect it with main, open product output window from the menu and select “headers only” check which product is not tagged DLH under request column and tag that product as DLH by 9
Page 1 and 2: Ministry of Earth Sciences INDIA ME
Page 3 and 4: Preface Introduction Definitions Pu
Page 5 and 6: 3.8 To copy RAW DATA 35 3.9 Procedu
Page 7 and 8: B.3.3 Velocity Products 69 B.3.4 Hy
Page 9 and 10: PREFACE India Meteorological Depart
Page 11 and 12: DEFINITION An important aspect of a
Page 13 and 14: MONITORING OF DWR SYSTEM CHAPTER 1
Page 15 and 16: Before controlling radar operations
Page 17 and 18: 5. Power Cabinet: “SERVO POWER AM
Page 19: 9. Checking real time displays:-The
Page 23 and 24: This can be done by “telnet” co
Page 25 and 26: drwxr-xr-x 3 501 500 4096 Aug 10 02
Page 27 and 28: Figure 1.8 Connecting to MAIN serve
Page 29 and 30: Thus now the tasks are configured a
Page 31 and 32: STEP 1 : Invoke “iris” though t
Page 33 and 34: STEP 6 : Skip time : This is the ti
Page 35 and 36: 3. Edit the Product as needed , the
Page 37 and 38: (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
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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
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1.5. There is provision of DVD Writ
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6. Wait for ten minutes. Calibrate
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SA9-15 Current at position 15 of A1
Page 89 and 90:
Test procedure (1) Type the “zaut
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4. Observe that the PFN voltage goe
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Table D.1. PPI and RHI scanning typ
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According to the need of IMD, purpo
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Chennai@8min, Machilipatnam, Vishak
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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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Doppler Weather Radar - METNET - India Meteorological Department

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