Interphase PC/View, Operation Manual

Page: 37 / 56

37
Logging Depth
PC/View can log the tracked depth in a file and
send it out over a serial port. To activate this fea-
ture, select
Depth Log Schedule… from the File
menu and click in the check box labeled Enable
Automatic Depth Log . Next, select a format for the
logged depth. Choose ASCII format or NMEA
0183 sentence format. The ASCII format includes
the date, the time and the depth below the trans-
ducer in the current
Units .
For the NMEA 0183 format, any or all of four sen-
tence types can be saved. NMEA 0183 format sen-
tences begin with a dollar sign followed by the
two-character talker identification followed by the
three-character sentence type. The talker identifica-
tion for PC/View is SS, for scanning sonar. Data
fields in the sentences are comma-delimited and
the sentences end with a star followed by the
checksum. PC/View uses the following four sen-
tence types:
DPT - Depth with Keel Offset. This sentence in-
cludes the water depth, in meters, relative to the
transducer followed by the offset from the trans-
ducer in meters.
DBT - Depth Below Transducer. This sentence
includes the water depth in feet; the water depth in
meters and the water depth in fathoms, all refer-
enced to the transducer.
ZDA - Time and Date. This sentence includes, the
Universal Time Coordinated (UTC), the day, the
month, and the year, all in UTC, and the local zone
hours and minutes (Atlantic Standard Time is local
zone 05 hours, 00 minutes).
GLL - Geographic Position Lat/Lon. This sentence
includes the latitude in degrees and decimal min-
utes, north or south, the longitude in degrees and
decimal minutes, east or west, the UTC of the posi-
tion and an indicator of the validity of the informa-
tion. The talker identification for this string is that
of the navigation source rather than SS.
1999/03/31 16:43:29.01 12.2 ft.
Year
Month Depth
Day
Hour Units
Minute
Second
ASCII Depth Format