Estimates of power usage on the tower.
|Height||Usage||Power in Watts (max)|
|45m||CSAT, Li7500, TRH, Etherant||2+10(30)+1+10=23(43)|
|39m||CSAT+EC150, TRH, DSM, 3G, 4G, WWWcam||4+1+5+6?+6?+12 = 34|
|33m||CSAT, Li7500, TRH||2+10(30)+1 = 13(33)|
|27m||CSAT, Li7500, TRH, DSM||2+10(30)+1+5 = 18(38)|
|21m||CSAT, Li7500, TRH||2+10(30)+1 = 13(33)|
|15m||CSAT, TRH||2+1 = 3|
|9m||CSAT, Li7500, TRH||2+10(30)+1 = 13(33)|
|2m||CSAT, TRH||2+1 = 3|
|CSAT3 sonic||5||20||12+16=28||242 MByte|
|CSAT & krypton||2||20||14+16=30||104 Mbyte|
|Licor 7500||5||20||49+16=65||562 Mbyte|
|Paro6000 Barometer||4||14.85||17+16=33||169 Mbyte|
Testing in the EOL staging area, over a WIFI (AP24/Etherant)and 10-Base Fiber connection showed a consistent 165 Kbyte/sec transfer of a NIDAS binary data file from the "high" dsm, which had a flash-type USB disk. This was using rsync, with on-the-fly compression. Downloading 1475 Mbyte over this connection will take about 9000 seconds= 2.5 hours every night. The file copy was done while the normal real-time data was also being sent to the dsm_server via TCP.
May 9: upgraded to 100-Base-FX fiber converters. Compressed transfer of a 111.9 MByte file took 8:44, at a reported rate of 208 kByte/sec, and a total of 30.0 MByte was transferred (compressed 119.9 Mbyte to 30.). Uncompressed transfer took 6:14 at an reported rate of 291 kByte/sec. Seems that uncompressed is faster - probably because the Viper is a slow CPU.
So not using compression, and assuming 291 kByte/sec, the nightly transfer of 1475 MByte will take about 5068 secs = 1.4 hours.
- 2x 3G modems in Cradlepoint router at the top of the tower
- Copper RJ45 running down the tower to a switch in bottom DSM
- Copper RJ45 running back up the tower to mid DSM?
- Copper RJ45 strung along the trees to chemistry trailers along the tower access road.
- A WiFi access point in one chemistry trailer.
- Fiber optic cable running ~600m between bottom DSM at the tower and the Base trailer.
- A WiFi access point and switches in the Base trailer.
- Long-distance WiFi access point also at Base trailer.
- Long-distance WiFi station adaptors at each of Pond DSM, SODAR, and LIDAR.
Logistics at AABC Site
- Base trailer was parked near a carport with an existing live power drop.
- Porta-Potty was placed near trailer.
- Power cable was run by hand 1800' from this power drop (two seperate 220V circuits) to transformers on the road by the tower.
- Tower was powered by cable from these transfomers.
- Two small trailers (TRAM + CU) were parked on the road for chemistry instrumentation and also powered from the transformers.
- The tower was erected just before leaf-out to facilitate running guy wires.