User's Manual

RHOTHETA User Manual RT-800
Page 61 of 78
8.2.2 GPS / RS422 Port
This optional (Build-To-Order Option) input is used to connect an external GPS-device to set
the internal system clock. This is required for synchronisation of the bearing values if several
direction finders are connected together by a command and control center.
Contact
/ Pin Signal
6 RS422 Rx / A
Input of serial GPS data with RS422 level
1 RS422 Rx / B
5 GND
Output power supply for external GPS
9 +24V
DC
8.2.3 Fuse F3
This protection fuse covers the power supply of antenna unit as well as external GPS.