Marine Electronics Forum - Simrad NSS7 depth speed refresh / general speed

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stevemitchell
03-21-2012, 11:44 PM
I have a Simrad NSS7 I just got up and running. It's not using it's built in depth sounder, but instead I have a Maretron depth sensor (new in the last year) that is on my NMEA 2000 network. It's a 200kHz sensor, and seems to work just fine with the NSS.

My concern is that the refresh of the screen when in Echo is pretty jerky. I was told AFTER (sigh) I bought the NSS7 that it is pretty slow at certain things. I've noticed that when I open my Navionics Platinum charts, it can take 10 seconds before they show up right.

I'm wondering if the CPU speed in this model is going to cause problems with other things. I have the BR24 radar, WM-2 Sirius radio, TP300 TillerPilot, and a bunch of NMEA 2000 devices (almost 20). So far I haven't noticed anything else, and really like the touch screen interface.

I'm downgrading from an NSE12 which was far too big for my sailboat. I am curious what others are seeing with the NSS7 specifically in the depth side, but just in general.

I may see if the NSS8 is faster at the local store...


kshearer@totalogistix.com
03-22-2012, 04:25 AM
Per my conversations with the techs at Simrad, the NSE has a faster processor.

NCMac
03-22-2012, 04:45 AM
I believe the NSS7 and NSS8 to be the same processor. I have an NSS7, with an Airmar B164 1kW transducer, I have no performance issues even at cruising.


bluewaterpirate
03-22-2012, 05:26 AM
Steve .... the charting features are slow to load on my NSS8 not anywhere close to the speed of my Garmin 740. With that said once they're loaded (all the displays and functions) the displays are fine. I have noticed turning the ohot's off really helps. All my N2k network devices shared between my GArmin 740 and NSS8 work as advertized. Everything was plug and play. Even my NMEA 0183 GPS antenna attached to 740 is picked up by the NSS7 via network bridging. Overall very happy with the new install. I use the embedded sonar in the NSS8 quite happy with it.

stevemitchell
03-22-2012, 08:43 AM
@kshearer & @NCMac - yup I confirmed both of those a while ago before I purchased the NSS7. The NSE 12 has a 1.6Ghz CPU (mobile) while the NSS7/8 have an Atom 1Ghz. Not only are the CPU speeds slower, but those architectures (my day job) are completely different, and I expected the NSS to be considerably slower at CPU intensive operations.

@bluewaterpirate - thanks for the feedback. Sounds like you have a properly busy network just like me without any issues.

For all of you, when you are using the Echo side of things, does it look smooth and update every second or so, or does it jerk at all? Mine seems to scroll for a while just fine and then get all jerky and update only every 3-5 seconds from that point onwards.

Looking at other NMEA 2000 instruments that are using that same data, they are scrolling nicely without any issues...

manethon
03-22-2012, 01:44 PM
anyone ever think about upgrading CPus in these units or which are supported.
Most of these CPU's are cheap

stevemitchell
03-22-2012, 03:06 PM
anyone ever think about upgrading CPus in these units or which are supported.
Most of these CPU's are cheap

Most of the CPUs are also soldered on, at least the Atom family is completely this way. I'm not sure which CPU they're using in the NSE series, but I would suspect it is as well, or at the minimum, there's a giant heat pipe involved that would be very unpleasant to remove without some limited amount of damage.

Usually with this sort of purpose built stuff as well, they have protection in their kernel or other boot time scripts that would freak out if it saw a different CPU speed. In some cases, poor developers hard code stuff in that would freak out.

Not to mention the heat issues :)

I have built at least 20 different marine-grade PCs yet I still buy Simrad for my primary system for one reason - it works and has a warranty. Plenty of futzed with stuff that I've seen ends up failing at the least opportune moment...

NCMac
04-24-2012, 05:10 AM
I noticed last week that I'm not getting a water temp reading on the NSS7 with the Airmar B164. The manual is not much help, but it would appear that it's a standard feature.

Any thoughts?

abbor
04-25-2012, 03:23 PM
Pages button -> Settings -> Network -> Sources -> Auto Select

Make sure all connected equipment is switched on before doing the auto configuration. This should give you the temperature back.

joe_dejesus
04-27-2012, 12:50 PM
I noticed last week that I'm not getting a water temp reading on the NSS7 with the Airmar B164. The manual is not much help, but it would appear that it's a standard feature.

Any thoughts?


did you get it to work? Same thing happened to me with my NSS8 and Airmar TM260. No temp reading.. when I measure resitance in the blue pin I get correct reading for outside temp so it should be working..

Joe

abbor
04-27-2012, 02:50 PM
Do you have any other Simrad or Lowrance sounder including StructureScan networked with NSS?

joe_dejesus
04-27-2012, 07:08 PM
Pages button -> Settings -> Network -> Sources -> Auto Select


This actually worked for me! Got the water temp to work.. awsome thanks!

NCMac
04-27-2012, 08:15 PM
I will give this a whirl next weekend. I'll post back whether this worked and any other efforts I made to make it happen.



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