Table of contents
- 1.1.1. Introduction
- 1.1.2. Start contributing
- 2. Uploading data
- 2.1.1. Supported Keywords
Introduction
The EVN-Monitor is a real-time monitoring system for all EVN stations. The EVN-Monitor is able to track all items from the NASA Field System System Status Monitor, this include parameters such as weather information, clock offsets, TSYS measurements, etc. A full list of items which can be tracked is listed below.
The EVN-Monitor system was originally developed as part of the JUMPING JIVE project, the service is hosted by JIVE. The system is based on the Zabbix monitoring software.
The service can be reached at https://evn-monitor.jive.eu
Start contributing
To contribute to the EVN Monitor please send your public ssh key to keimpema [at] jive.eu. We will also need the IP (range) from which you will be accessing the EVN Monitor so we can whitelist you in our firewall.
An account will then be created and you will receive your username via email.
Uploading data
Uploading data to the EVN Monitor is done by calling a program called datasend over ssh. For example to upload a windspeed of 10 km/h is done by calling
ssh username@evn-monitor.jive.eu datasend ERC.WINDSPEED 10.0
Where in the above example username should be replaced with the username you received after your account was created.
A full list supported items that can be tracked by the EVN monitor is listed in Appendix A, this list can also be obtained from datasend by calling
ssh username@evn-monitor.jive.eu datasend -l
ssh username@evn-monitor.jive.eu datasend -h
usage: datasend [-h] [-t TIME] [-l] KEYWORD value
Upload items into the EVN-Monitor
positional arguments:
KEYWORD Name of item, e.g. ERC.WINDSPEED; Use --list for a full list of keywords
value The value of the item to be logged
optional arguments:
-h, --help show this help message and exit
-t TIME, --time TIME Time of data point as number of seconds since 1970 aka unix time. Default: the current time when this script is called.
-l, --list Show list of accepted keywords
Supported Keywords
Below is a table of all supported keywords, items in bold are recommended items for an initial set of parameters to contribute.
| Keyword | Unit | Help |
| ERC.ANTENNA | Text | Antenna name |
| ERC.AZIMUTH | Degrees | Antenna azimuth |
| ERC.CABLE | ps | Cable delay |
| ERC.CATALOGYEAR | Year | Year of astronomical catalogue used |
| ERC.CHECKS | Text | Activated NASA Field System checks |
| ERC.DEC | Text | Declination of Source |
| ERC.DOTMON | µs | Clock delay (GPS - FMOUT) |
| ERC.DOTMON2 | µs | Clock delay (GPS - FMOUT) |
| ERC.ELEVATION | Degrees | Antenna elevation |
| ERC.FBFREE | TB | Free diskspace on flexbuff |
| ERC.HALT | Text | Scheduling halt status |
| ERC.HUMIDITY | % | Meteorological humidity |
| ERC.IF1 | Kelvin | System temperature of IF channel 1 |
| ERC.IF2 | Kelvin | System temperature of IF channel 2 |
| ERC.IF3 | Kelvin | System temperature of IF channel 3 |
| ERC.IF4 | Kelvin | System temperature of IF channel 4 |
| ERC.LOG | Text | Current log file name |
| ERC.MODE | Text | Mode |
| ERC.NEXTTIME | Text | Time of next activity |
| ERC.PRESSURE | hPa | Meteorological pressure |
| ERC.RA | Text | Right ascension of source |
| ERC.RATE | Text | Rate |
| ERC.SCHEDULE | Text | Current schedule |
| ERC.SOURCE | Text | Source name |
| ERC.TEMPERATURE | Celcius | Meteorological temperature |
| ERC.TIME | Text | Current Field System time |
| ERC.TRACKINGSTATE | Text | Current tracking state |
| ERC.WINDDIRECTION | Degrees | Wind direction |
| ERC.WINDSPEED | km/h | Wind speed |
| ERC.WINDLIMIT | km/h | Wind speed limit (max speed before antenna is stowed) |
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