Kongsberg M3 Sonar, Reference Manual

Page: 29 / 182

922-20297001/1.2
27
f If you see missing pings, try reduce the value in the
Override Network Link Speed
box to improve the performance.
Testing 1PPS Time Sync Mode
If you have an M3 Sonar FLS Sonar Head with a 1PPS connector, you can synchronize the
Sonar Head clock with an external 1PPS source. After you have enabled the 1PPS Time
Sync Mode, you can make sure it is working by reading through the
Output Messages
log file.
Prerequisites
• The Sonar Head must be upgraded to the latest firmware version (version 1.5 or later).
• 1PPS synchronization requires ZDA input over UDP to the Sonar Head (not to the M3
Sonar FLS software) on UDP port 31100 at 1Hz.
• The 1PPS signal must be sent to the Sonar Head using the 1PPS input on the following
cable:
– 10-pin SEA CON ® MINK-10-CCPL cable with power, Ethernet, 1PPS, and Sync.
Procedure
1 Click
Setup
→
System Configuration
→
Devices
→
Sonar Setup
.
2 In the
Device Properties
table, select 1PPS from the
Time Sync Mode
drop-down list.
3 Click
Close
.
4 Click
Setup
→
Connect
to start the Sonar Head.
5 Click
Display
→
Output Messages Window
.
Observe that the
Output Messages
window opens.
6 Select the
Head Messages
tab in the
Output Messages
window.
Alternatively, navigate to C:\KML\M3 Sonar FLS_V0120\LOGS. Open the latest
HEAD log file in a text editor.
7 Read through the
Output Messages
log and look for errors.
Example
The following is an example of some 1PPS log entries, including an explanation of what
each entry means.
•
INF System Time 1518282830 s 653 ms 734 us
A response to host cmd for the sonar head’s current timestamp.
•
INF 1PPS: 10 pulses received in 10s
Getting started