TW5340 User Manual
10
©2014 -2015 Tallysman Wireless, Inc.
Confidential
Note 1 :
TW5340 Hardware has been changed on Rev 3 to provide better noise immunity of the
1PPS outputs. The following pin changes were made:
1PPS B was pin 3 & is now pin 1
1PPS A was pin 4 & is now pin 2
Wake up input was pin 1 & is now 3
Fix Quality/Standby status was pin 2 & is now pin 4
Note 2:
There is no change in the Test Adaptor cable 27-0045-0
6.1
TW5340 Installation
For best results the TW5340 GPS Receiver/Antenna should installed with a clear view of
the sky. The GPS Receiver/Antenna will obtain a 3D fix GPS fix with a minimum of 4
satellites.
6.2
Testing
Tallysman TW5340 DB9 Test adaptor (part # 27-0045-1) connects to the RJ45 connector
on the TW5430 and provides a DB 9 COM port connection to a PC for testing purposes.
Figure 4 shows the test system set-up, connect the adaptor RED wire to the positive
supply and the Black wire to Gnd.
If the TW5340 outputs at RS232 levels the Test Adaptor can be plugged directly into the
PC Com Port, if the TW5340 outputs at CMOS levels a CMOS to RS232 converter will be
required between the Test Adaptor and the PC COM port.
Baud Rate
The default output from the TW5340 is 5 digit resolution GGA, GSV and Usage messages
at 115,200 baud. See section 10 for message format information.
