Transystem GM-2 - Manual (Page 7)

GM-2 Series
V0.5 7
Note: AGPS has 6 day time limited.
6.
Interface
6.1. USB interface
The pin assignment for USB interface is shown in Fig-1.
6.2. PS2 interface
There are two possible interface signal level with PS2
connector, RS-232 or TTL.
The pin assignment for RS-232 and TTL are shown
respectively in Fig-1.
6.3. LED
There are two LED’s with GM-2.
Orange LED will stays on when searching GPS signal. It
will start flashing once GPS has position fix.
Optional yellow LED will start blinking once GM-2 start
logging position.
Fig-1