Trimble GPS 4000 Series

Trimble 4000 Series, families of Trimble 4000 serie: 4000SE/SSE/Si/SSi/RS/DS.

The Generation of this GPS already discontinued 20 years ago. But until right now, many survey company in Indonesia still using this GPS series and some of university also using this GPS. The main problem of this unit is "Remote Monitor Active" appear on LCD monitor, this problem cause by firmware corrupt or same time main processor board faulty.

Trimble 4000SSi

The 4000SSi is a full-featured dual frequency GPS receiver ideal for high-end survey applications. The receiver provides perations for geodetic control, land survey, offshore survey and land movement monitoring.

In addition to using the receiver for postprocessed surveying, the receiver can be used for real-time kinematic (RTK) GPS surveying and RTCM differential work. The receiver is supplied standard with RTCM input, event marker input, 1 PPS output, and an NMEA navigation interface. These features allow the receiver to be used for hydrographic, marine, aerial and everyday survey work. The display makes it easy to configure settings, create files and locate existing sites when necessary. 

The unit very useful for  small survey, cost reason, daily rate is very competitive. But for long term survey I not suggest to use this type, is better to use new generation GPS from Trimle.