Guralp Systems CMG-6TD User Manual

Page 85

Command-line interface

This setting will be overridden when the GPS system next synchronizes the
clock.

7.3.6 TIME?

Syntax: TIME?

Displays the current time as held in the system's real time clock. If a GPS is

attached, this will be synchronized to it. The output is given in the form

year month day hour:minute:second ok

7.3.7 .FIX

Syntax: .FIX

Displays the current GPS timing fix. The GPS must be attached and powered

up for this command to be valid; if it is not, you will see an error message.
You can power up the GPS manually with the command XGPS.

The 6TD will reply in the form

.fix year month day hour:minute:second =>> fix-mode

SV#'s satellites ( number-of-satellites ) ok

where

•

year month day hour:minute:second is the current time (if
synchronised to GPS);

•

fixmode is the fix type (either Auto 2-D or Auto 3-D), and

•

satellites is a list of the satellites currently visible. The 6TD will

carry out clock trimming only if an Auto 3-D fix is available, which
requires at least 3 satellites to be visible.

If the 6TD is not attached to a GPS, you will see the message

NO GPS

No FIX SV#'s none ok

7.3.8 .POSITION

Syntax: .POSITION

Displays the current reported GPS position, in the form

.position Lat latitude Long longitude ok

where latitude and longitude are displayed in degrees, minutes and
seconds.