What error am I making?

GPS/GNSS Development Boards
1

i have tried to read data from two (2) different GPS modules with no success. All I get at any baud rate is gibberish. I have GPS-11571 and GPS-00465. I have 5 V connected to the Vcc pin. I have a ground connected to the ground pin and the Tx line from the device connected to to the Rx pin (pin 2 of a 9 pin RS232 connector) of a Targus RS232to-USB converter. I am using Tera Term as my logging/communicating program on my PC. I get a periodic output (about once a second) to Tera Term but it is gibberish

«åë·q_qYS§§§§§§§§§§§«uåë·q_qgg§§§§§§S§c«åë[}m?S§§§§§§§§§§c«åë·q_SWq§§§§§§§§§c«åë·q_qq}§§§§§§§§

£

§§§§§§«åë·q_qY}§}§§§§§§§§§§§§§§

£

§

It seems to be the same gibberish every time. Any suggestions? Am I missing something obvious? Thanks

A Palus

2

What are the rest of the communication parameters set to in Tera Term? Parity, stop bits etc.

Put a jumper from pin 2 to pin 3 of the RS232 connector, and make sure you get an echo in Tera Term when you type on the keyboard.

3

Tera Term set for 8 bit 1 stop bit parity none

I have jumpered as you suggested and yes I see the echo. Also, I have used the Targus RS232-to-USB for other serial communications. I know it is working.

4

The GPS modules are TTL serial, not RS232. You need a converter such as the BOB-00718 to go between Tera Term and your modules.