March 2009
Issue #3

APPLICATION ARTICLE:

Reading Time from the Microcom Design GTX Satellite Transmitter into the Campbell Scientific CR1000 Data Logger

The Microcom Model GTX Satellite Transmitter and Data Collector works on GOES, GMS, ARGOS, SCD & METEOSAT systems. The GTX has some data logger functions built into it, including an SDI-12 and counter input. The GTX can interface to external data acquisition systems like the Campbell Scientific Programmable Data Logger via its RS-232 port.

The GTX internal time keeping is +-0.25 PPM (+-0.65 seconds per month or +-0.02 seconds per day maximum). With GPS this is improved to +-0.1 milliseconds at the GPS update time and drifts at the max rate of +_0.25 PPM until the next GPS update. This is more accurate than the CR1000’s internal clock, and so it makes sense to set the CR1000 clock to the GTX clock’s more accurate time.

GO TO THIS APPLICATION NOTE

SUBSCRIBE TO THIS NEWSLETTER!!

Go to our information request page and put the words SUBSCRIBE ME in the requested information box. [ CLICK HERE ]

MICROCOM WEBLINKS

• Home
• Products Page
• Request Information
• Contacts
• Links
• Support

410-771-1070