Simrad PSIMP,C datagram format
Simrad PSIMP,C a proprietary datagram format created by Kongsberg Maritime to provide sensor configuration data.
Format
$PSIMP,C,tt,dd,M,U,DT,VS,FF,SWuC,SWDSP,cal,find,agc,mgain,mpf,mpfl,if,ifl*chksum<CR><LF>
Description
Note
This datagram description is not complete. For more information, contact Kongsberg Maritime.
1 PS: Talker identifier
2 IMP: Datagram identifier
3 C: Sentence specifier
4 tt: Time
5 dd: Date
6 M: Unit of measurement; Depth
•  M = metres
•  f = feet
•  F = fathoms
•  P = Passi braccio
7 U: Unit of measurement; Temperature
•  C = Celsius
•  F = Fahrenheit
8 TD: Detection threshold, Receiver, 3 to 20 dB
9 VS: Vessel speed, 1 to 20 knots (This is the maximum speed of the vessel during the pursuing operations.)
10 FF: This is a 2-character field with filter settings for the digital, analogue and hybrid sensors. The left character identifies the filter setting for the digital sensors. The right character identifies filter setting for the analogue and hybrid sensors.
•  0 = Off
•  1 = Weak
•  2 = Medium
•  3 = Strong
11 SWuC: Software version, Microcontroller
12 SWDSP: Software version, Digital Signal Processor (DSP)
13 cal: Value ="1" to initiate depth sensor calibration
14 find: Value ="1" to initiate sensor finder (not implemented)
15 agc: AGC (Automatic Gain Control)
•  0 = Off
•  1 = Active
16 mgain: Manual gain (AGC (Automatic Gain Control) = Off)
•  0 dB
•  20 dB
•  40 dB
17 mpf: Multipath filter
•  0 = Off
•  1 = Active
18 mpfl: Multipath filter (Value)
•  0 = Test
•  1 = Fresh
•  2 = Salt
19 if: Interference filter
•  0 = Off
•  1 = Active
20 ifl: Interference filter level = 0 ‑ 9
21 chksum: Checksum (The checksum field consists of a "*" and two hex digits representing the exclusive OR of all characters between, but not including, the "$" and "*" characters.)
Note
This datagram format is obsolete.It is no longer in use on new designs.