Ping Rate

Anything Related to the Humminbird 11xx, 9xx, 8xx, 7xx also known as CORE series Units
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Ipilot
Posts: 24
Joined: Mon Aug 09, 2010 7:48 pm

Ping Rate

Post by Ipilot » Mon Apr 25, 2011 7:05 pm

Is there any way I can adjust the ping rate on a 797 & 777? Can't find anything in the menus.
"I'd like to have a beer-holder on my guitar like they have on boats"
James Hetfield

SilmarilS
Posts: 188
Joined: Wed Oct 14, 2009 12:19 pm
Location: Canada, QC

Post by SilmarilS » Tue Apr 26, 2011 12:01 am

My explanation is valid only for 2D sonar, NOT SI/DI....

Technically, the ping rate for the transducer is hard-coded in the firmware.
And is coded to offer the best possible number of returns for a given depth.

From my non-scientific test, the ping rate is about 30 pings par second (for single beam) from 0-30 feet.
Divide that by two if you are using Dual Beam sonar. (Since HB use the same crystal for 200 and 83, the unit must wait for the 200 kHz return before pinging the 83 kHz. They should use different crystals to double the speed of data to the unit)

And slow down to around 5 pings/second at 200 feet. (always Single Beam)


Here's a little table:

Feet - Pings
10 - 29.4
20 - 29.4
30 - 29.4
40 - 25
50 - 20
60 - 16.9
70 - 14.9
80 - 12.8
100 - 10.3

Ipilot
Posts: 24
Joined: Mon Aug 09, 2010 7:48 pm

Post by Ipilot » Tue Apr 26, 2011 4:45 am

Thanks mate.
Not great deal of help.......I have a 797 @ 777 and get the occasional interference. Was going to split the ping rates like can be done on Lowrance units and see if that helps the situation but it appears that's not an option.
"I'd like to have a beer-holder on my guitar like they have on boats"
James Hetfield

SilmarilS
Posts: 188
Joined: Wed Oct 14, 2009 12:19 pm
Location: Canada, QC

Post by SilmarilS » Tue Apr 26, 2011 1:01 pm

The only thing I can tell you, try adjusting the noise filter option in the sonar menu..

Ipilot
Posts: 24
Joined: Mon Aug 09, 2010 7:48 pm

Post by Ipilot » Tue Apr 26, 2011 5:32 pm

SilmarilS wrote:The only thing I can tell you, try adjusting the noise filter option in the sonar menu..
I'll give it a go, thanks mate.
"I'd like to have a beer-holder on my guitar like they have on boats"
James Hetfield

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