DL1 and Dash2 design question

disquek
Posts: 150
Joined: Thu Dec 08, 2005 9:13 pm

DL1 and Dash2 design question

Postby disquek » Tue Feb 23, 2010 9:35 pm

I'm installing a Dash2 and a DL1 and removing all other gauges.

In order to make the system fault tolerant of the DL1 failing, it would seem to make sense to wire all the sensor that I cannot live without (oil pressure, water temp, RPM, oil temp, fuel pressure) into the Dash2's analog inputs. That way if the DL1 fails at some point during the weekend, I may not have the ability to log data, but at least I will have gauges (and be able to race).

Thoughts? Problems?

Thank you!
-Kyle

Support

Postby Support » Wed Feb 24, 2010 3:36 pm

Thats a perfectly sensible thing to do and presents no issues. The analogue channels from the DASH2 can be logged by the DL1 data logger, information on how to set this up can be found here: http://www.race-technology.com/wiki/ind ... ASH2Inputs

disquek
Posts: 150
Joined: Thu Dec 08, 2005 9:13 pm

Postby disquek » Wed Mar 10, 2010 3:31 pm

Thanks for the quick reply.

I see that the Dash2's analog channels can be logged by the DL1.

If I wire the tach signal into the Dash2 can RPM from the Dash2 also be logged by the DL1?

-Kyle

osborni
Posts: 497
Joined: Fri Dec 07, 2007 9:08 pm
Location: USA, Michigan

Postby osborni » Wed Mar 10, 2010 4:22 pm

I did what you described. Be aware that the data resolution and sampling frequency seams to be lower on the Dash2 then the DL1. Not an issue for your standard pressure/temps from the motor, but something to be aware about.

I run all my sensors off an independent power supply - so the DL1 and Dash2 are not powering the sensors.

I run one wheel speed sensor to both the DL1 and Dash2.
BMW 2000 M Coupe

disquek
Posts: 150
Joined: Thu Dec 08, 2005 9:13 pm

Postby disquek » Wed Mar 10, 2010 4:38 pm

Osborni.

Do you have the RPM signal into the Dash2 or the DL1? If the Dash2, is it logged?

Also , can you be more specific about the analog input frequency and resolution into the Dash2?

Support, can you confirm if the A/D converters differ from the DL1 to Dash2?

-Kyle

Support

Postby Support » Thu Mar 11, 2010 12:04 pm

The resolution is about the same, but the sample rate on the DASH2 is fixed at around 30Hz, compared to up to 100Hz on the DL1.

disquek
Posts: 150
Joined: Thu Dec 08, 2005 9:13 pm

Postby disquek » Thu Mar 11, 2010 1:33 pm

Thanks for all the help guys.

Does the DL1 record RPM when the RPM is input only to the Dash2?

Is this the preferred configuration (RPM into Dash2 only)?

Thanks again!
-Kyle

osborni
Posts: 497
Joined: Fri Dec 07, 2007 9:08 pm
Location: USA, Michigan

Postby osborni » Thu Mar 11, 2010 4:09 pm

Support wrote:The resolution is about the same, but the sample rate on the DASH2 is fixed at around 30Hz, compared to up to 100Hz on the DL1.
Ah - OK, good to know.

I can't remember specifically if i run an RPM to both the D2 and DL1 - car is in long term storage for the winter (ending soon!!!). But I'm pretty sure that i run it to both. In any case, I get good data and a RPM readout with the DL1 off.
BMW 2000 M Coupe

jlucas
Posts: 302
Joined: Tue Nov 29, 2005 12:45 am
Location: East Liberty, OH
Contact:

Postby jlucas » Fri Mar 12, 2010 12:13 pm

disquek wrote:Does the DL1 record RPM when the RPM is input only to the Dash2?

Is this the preferred configuration (RPM into Dash2 only)?


IIRC yes it does, anything going in the dash is fed to the dl1 via the serial.

My preference would be to use the dash inputs first so if you want to loan out the DL1 or something you still have into coming into the dash.
Jeremy Lucas
Fast Tech Limited - a Race Technology Dealer


Return to “Installation questions”

Who is online

Users browsing this forum: No registered users and 43 guests