Differential Corrections - Simrad HS52 Instruction Manual

Simrad HS52 GPS compass and DGPS navigator
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Differential Corrections

The signal cable with the differential corrections is connected to
the terminal block P207 on the Processing unit. If data from
more than three stations are available on the input serial line, the
nearest three stations are used. The selection of reference station
algorithm are dependent on receiving RTCM message type 3
(station coordinates) to function properly.
The description of the selections in the Diff. corrections
submenu is as follows:
•
External DGPS. The following selections are available:
− Baudrate. The rate at which bits are transmitted. 4800
is standard RTCM rate.
− Format. The input format on the DGPS corections can
be selected between the following:
o RTCM. When this format is selected the correct
RTCM Options must be chosen. If not, the
differential corrections will not be used in the
position solution.
o CMR.
o None.
− Link timeout. The timeout interval for use of old
DGPS correction in the position solution. The timout
interval on the DGPS link can be input in the range 10
to 99 seconds.
− RTCM Options. Select the correct RTCM properties.
The default RTCM Options is with the properties
MSB 1st and 6 of 8.
20222360 / E