Gps8 - Oscillator Offset Temperature Curve Fit - Leica MX400 Operating Instructions Manual

Operator's Manual
The small 1 hour gap in the bar graph represents the 24th hour. The
gap is provided to ease the readability of the bar graph for the
present time. The dashed line extending horizontally from the 4
represents the current HDOP Limit Alarm, which is set in CFG
Position. The current HDOP and VDOP values are given in the
upper window.

GPS8 - Oscillator Offset Temperature Curve Fit

This screen is for Leica engineering use only. In general, it repre-
sents an oscillator temperature and frequency relationship for the
GPS receiver. This helps the GPS receiver select an appropriate
frequency offset to find satellites quickly. The values displayed
have no meaning or use to you, except that you should see a screen
displaying something representing a sine wave. It is possible that
future versions of software will use a different curve than the one
illustrated below. The X which marks the current frequency offset
is valid virtually anywhere on the screen.
What you should not see is a temperature curve that looks like a
scatter plot. A scatter plot contains discontinuous points "sprayed"
all over the screen. If you see something like this, then the receiver
is probably having difficulty picking up satellites. Try performing a
cold start to correct the problem. You can also try downloading the
180
Appendix C - Engineering Mode
Version 3.3