$PSIMP,C,tt,dd,M,U,DT,VS,FF,SWuC,SWDSP,cal,find,agc,mgain,mpf,mpfl,if,ifl*chksum<CR><LF>
1 | PS: Talker identifier |
2 | IMP: Datagram identifier |
3 | C: Sentence specifier |
4 | tt: Time |
5 | dd: Date |
6 | M: Unit of measurement; Depth
|
7 | U: Unit of measurement; Temperature
|
8 | TD: Detection threshold, Receiver, 3 to 20 dB |
9 | VS: Vessel speed, 1 to 20 knots (This is the maximum speed of the vessel during the pursuing operations.) |
10 | FF: This is a 2-character field with filter settings for the digital, analogue and hybrid sensors. The left character identifies
the filter setting for the digital sensors. The right character identifies filter setting for the analogue and hybrid sensors.
|
11 | SWuC: Software version, Microcontroller |
12 | SWDSP: Software version, Digital Signal Processor (DSP) |
13 | cal: Value ="1" to initiate depth sensor calibration |
14 | find: Value ="1" to initiate sensor finder (not implemented) |
15 | agc: AGC (Automatic Gain Control)
|
16 | mgain: Manual gain (AGC (Automatic Gain Control) = Off)
|
17 | mpf: Multipath filter
|
18 | mpfl: Multipath filter (Value)
|
19 | if: Interference filter
|
20 | ifl: Interference filter level = 0 ‑ 9 |
21 | chksum: Checksum (The checksum field consists of a "*" and two hex digits representing the exclusive OR of all characters between, but not including, the "$" and "*" characters.) |