Maretron DSM570, Руководство пользователя

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DSM570
User’s Manual
Page 120 Revision 1.8.3
Figure 112
– Configuring PDOP Mask on a GPS100
The allowable values for PDOP Mask are between 1 and 20. This number represents the Position
Dilution of Precision, which indicates the accuracy of the computed position and is a function of the
positions of the received satellites. If the PDOP of a given position solution is above the value of this
parameter, then the GPS100 will report that no fix is obtained. Disabling the PDOP Mask by setting
the value to “- “) will cause the GPS100 to report any position fixes obtained, regardless of the
accuracy of the fix.
6.14.1.5 SNR Mask
The DSM570 is capable of setting the SNR (Signal to Noise Ratio) Mask on a GPS100. You choose
this setting by pressing the Enter key (
) with the GPS SNR Mask menu item selected which
results in the screen shown in Figure 113.
Figure 113
– Configuring SNR Mask on a GPS100
The allowable values for the SNR Mask are between 1 dB and 60 dB. This number represents the
signal to noise ratio of a
satellite’s signal as received by the GPS100. Higher numbers indicate a