Jackson Labs LC_XO, Manual

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LC_XO GPSDO User Manual
14 © 2012 Jackson Labs Technologies, Inc.
3.2.2 Running the program
When Z38XX starts up, the main window appears, as shown in Figure 3.3 . The window can be
moved or resized as desired. It is necessary to wait about 20 seconds after starting the program for the
software to establish communications with the LC_XO.
The main graph shows the EFC (Electronic Frequency Control) digital control value (scale on the
right) in red, and the GPSR 1pps TI (compared with the mean GPS derived 1pps) in blue (scale on the
left). The graph is auto-scaling on both parameters.
3.2.2.1 Zoom and Pan
In the main graph window, you can zoom in to get more detail. To do so, position the cursor at the
bottom or top of the screen next to the beginning of the area you wish to zoom in on. Using the left
mouse button, drag the cursor up and to the right (or down and to the left) to the end of the desired
zoom area. When you release the mouse button, the display will zoom in on the desired area. To
unzoom, drag the cursor in the opposite direction, from the bottom right up and left (or from the top
down and left). The display will return to the full graph again.
To pan within the graph display, use the right mouse button to drag the graph around the window.
Figure 3.3 Z38XX main window
3.2.3 View menu
The View menu allows you to view different aspects of the LC_XO performance such as:
•
Satellite Azimuth/Elevation Chart
•
Satellite C/N level Chart
•
Time Stability measures
•
Clock Display
•
EFC Statistics
•
Receiver Status