Leica MX400 Operating Instructions Manual page 198

Appendix D - Dual Control Head Mode
this can also be useful in looking at subtle noise sources. Nice sharp
transitions, as are displayed on the fourth line in the example above,
indicate good decoding of beacon MSK signals. Squiggley transi-
tion lines indicate increased noise. Completely random lines, as are
displayed on the second line in the example above, indicate no
signal decoding. The text window above the display provides the
frequency, signal value (RSSI), and noise value. Refer to DGPS1
section of this manual. You can manually tune the frequency of the
beacon receiver in this screen by pressing the up and down arrows
on in the cursor key.
Version 3.3
Operator's Manual
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