Zda Data Message; Rd1 Data Message; Table 6-14 Zda Data Message Defined; Table 6-15 Rd1 Data Message Defined - CSI Wireless Vector Sensor Reference Manual

6.6.9 ZDA Data Message

The ZDA message contains Universal Time information. Table 6-14 breaks down the ZDA data
message into its components. This message has the following format.
$GPZDA,hhmmss.ss,dd,mm,yyyy,xx,yy*cc<CR><LF>

Table 6-14 ZDA Data Message Defined

6.6.10 RD1 Data Message

The RD1 message contains diagnostic information for SBAS operation. Table 6-15 breaks down
the RD1 data message into its components. This message has the following format.
$RD1,SecOfWeek,WeekNum,FreqMHz,DSPLocked,BER-
BER2,AGC,DDS,Doppler,DSPStat,ARMStat,DiffStatus,NavCondition *cc<CR><LF>

Table 6-15 RD1 Data Message Defined

Field
SecOfWeek
WeekNum
FreqMHz
DSPLocked
BER-BER2
AGC
DDS
Doppler
DSPStat
ARMStat
DiffStatus
NavCondition
*cc
<CR><LF>
The following table describes the DSP status. The DSP status should be 17, 1B, or 1F when SBAS
tracking has been achieved.
Vector Sensor Reference Manual
Field Description
hhmmss.ss UTC time in hours, minutes, seconds of the GPS position
dd Day, dd = 0 to 31
mm Month, mm = 1 to 12
yyyy Year
xx Local zone description in hours, xx = -13 to 13
yy Local zone description in minutes, yy = 0 to 59
*cc Checksum
<CR><LF> Carriage return and line feed
Description
The second of GPS week (may be a couple of seconds old)
The GPS week number
The L-band frequency in MHz (1475.4200 is used for SBAS)
1 if DSPStat = 1B or 1F
Bit error rate - bit error rates are given for both SBAS satellites being tracked
L-band Signal strength
0.0 for SBAS
0 for SBAS
A status bit mask for the DSP tracking of SBAS
A status bit mask for the ARM GPS solution
The SBAS PRN of the satellite in use
A series of hex character fields, which is read from right to left, with each field
representing the number of GPS satellites satisfying a certain condition, all of which
conditions are required if the satellite is to be used in the solution
Checksum
Carriage return and line feed
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