Dgps3 - Dgps Messages - Leica MX400 Operating Instructions Manual

Operator's Manual
Previous Station softkeys. These softkeys are only displayed if you
have entered a name for the reference station.
The bottom window of the display indicates the internal beacon
receiver Noise and Signal values. Typical performance values are
given below:
Noise Typical
Good
Marginal 1000 to 1500
Poor
Unusable > 2000
The window on the right side of the display indicates which satellite
ID's are receiving corrections. When the PRN number is shown in
inverse video, this indicates that the receiver is using the correction
in the navigation solution. The Corr value is the actual satellite
range measurement correction, given in meters. This value is
typically between -100 and +100. The Age value indicates how long
it has been since the satellite range correction was generated, given
in seconds. The factory default limit is 60 seconds. If the age goes
beyond the limit set in CFG1 DGPS, then the receiver discontinues
applying the correction to the range measurement. In a 100 baud
beacon system, this value is typically between 8 and 12 seconds.
200 baud beacon systems typically have an age of 4 to 7 seconds.
The faster that corrections are received and applied to your receiver,
the more accurate your position. The fastest rate at which you can
apply corrections is once a second, via the external data port. In
order to achieve a once a second update rate, DGPS corrections
must be applied at a baud rate of at least 1200 bps.

DGPS3 - DGPS Messages

This screen has one window which displays multiple messages with
date and time tags. These messages are generated by personnel
operating the reference station equipment. They might indicate
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system performance information, expected system down time
information, warnings/advisories to system users, or any other
message up to 90 characters in length that the system operators wish
to broadcast. Use the cursor key to scroll through the list of dis-
played messages. Oldest messages are overwritten when the
message log of 25 is filled.
10 to 500 Signal
< 1000
1500 to 2000
DGPS
Typical 150 to 465
Good > 150
Marginal 100 to 150
Poor 60 to 100
Unusable < 60
Version 3.3