Ideally, if you can connect your PC to the UART for any of the ISM300x or ISM400x GPS modules you can run the Sirf Live. Sirf Live will show you all the satellites and C/no and allow you to send commands and … Continue reading “What application do you have to help troubleshoot the GPS design?”

Yes, all our modules are ROHS compliant.

The FCC does not require that the GPS receiver has FCC or CE. We did perform FCC on the Sirf III for a specific customer request, however it is not required.

Yes, if you use the battery back up feature and keep power alive the unit will store the data and provide warm starts. The ISM400x GPS do not require the battery back up.

No, we do not support sub-meter accuracy.

Acquisition sensitivity can be summarized in two  conditions: ephemeris available from any source, or ephemeris must be obtained from the satellite data stream. For conditions where ephemeris is available, we can acquire a satellite down to about -155 dBm. When we must decode … Continue reading “How do you summarize acquisition sensitivity?”

For the ISM300x and ISM420 GPS, we output the 1 PPS as follows: The first output starts when we the GPS Kalman filter gets a stellite fix. Thereafter, the 1 PPS continues to  be output until the receiver is reset.  If we … Continue reading “How does your GPS output the 1 PPS?”

The ISM420 and ISM480 require 1.8V to run. The I/O inputs are 3.3v tolerant, however the I/O output is only at 1.8v. If you micor does not support 1.8V you will need a translator chip.

The ISM480 has an Ipex 12 pin connector header and you need to put the same mating connector on your board and connect via a flex ribbon cable. Inventek supplies a two length ribbon cables and the Ipex connectors on the … Continue reading “How do you connect to the ISM480?”

Yes, the ISM300x and the ISM480x family of GPS can be flashed in system. You need to control the flash enable pin and you can upgrade teh flash through the UART.