smiths digital speedo

Hi .
I am trying to calibrate my new speedo. Cant seem to get it to work.
a few questions .
When entering your numbers, do you enter from left to right or from right to left? Do you use decimal places?
Eg: 000568 or 568000?

Using the method where you mark out one kilometre on the road, I cant get a set of 6 zeros at the start of the set up.
I get a flashing asterix and 5 zeros and when I set off to travel the distance, the speedo reverts back to a setup page.
I've read the instructions over and over and I'm still no where.
When I enter the numbers I calculate from measuring the wheel rolling distance etc I get either "error" on the screen or "done" but no movement from the needle.
Help please.
Cheers Hillbone

It took us three attempts to get it working.

I think there is a relatively short time period allowed between you putting it into set mode, and you starting off on your fixed distance route. And again between stopping your journey, and saving your settings.

Hi mate
Did you get the asterix and five zeros or just 6 zeros?

Yes, I think you get the asterisk and five numbers.
You toggle through each of the numbers when you are in the manual setup mode instead of the drive to set mode.

In the drive to set mode you see 6 zeros.


I was holding the toggle switch wire to -ve for too long to start with, which is why it took a couple of attempts.

It says three seconds in the instructions, and I was probably holding it on -ve for nearer to ten - by that time it had toggled to the next mode.

On my current project I will fit a push button toggle switch instead of playing with wires inside the headlight shell - I think it will make the setup a lot easier!

Hi. Thanks for the reply. I have fitted the toggle. You need it regardless to switch from odometer total to trip.
When using the drive mode I get an aterix and 5 zeros.
Tom from Smiths USA is on it and has spoken to the UK. He has fantastic customer service. I'll post what the solution is when it arrives hopefully. Cheers

If owners are having persistent setup problems we would always advise owners to remove the instruments from their bikes/projects when testing for faults as so many hidden issues might be concealed by the machines loom and or faults with wiring installation.

The Smiths digital instruments require a good 12v supply so checking your battery health is essential.
In all cases suppressed spark plug caps should be fitted.
Before installation the speedometer should ideally be checked using a 12v battery on the workbench and the communication with the sender verified.
(there is an online picture demo here http://www.puca.co/tech2.html)
During setup the lcd screen on the speedo can be put into either SETPPU mode for manual calibration or DTSPPU for the onboard "drive-to-set" mode where the machine may be driven over a measured mile or km to set the instrument.
During setup If either asterix or question marks are seen in the lcd screen then this is usually an indication that the speedo head does not understand the information it is being programmed with, eg; a speedo in SETPPU mode must not have its sender active either by turning the wheel or otherwise, as this will conflict with the manual calibration in this mode.
During drive-to-set mode operation, the rider should prepare for safe road use, start the machine and then set the speedometer to "DTSPPU".
Asterix or question marks during DTPPU are usually due to inconsistent sender signal or interference from other components on the machine or poor wiring integrity.
(further DTS info here http://www.puca.co/dts.html)

Ride safe and good luck with your Smiths instruments.

I'm not sure what Smiths are saying here.
Firstly, you can't "start the machine and get into the STSsetup" as it won't go into that mode whilst the engine is running.
Still at a loss and still can't get rid of the asterix.

hillbone said:

I'm not sure what Smiths are saying here.
Firstly, you can't "start the machine and get into the STSsetup" as it won't go into that mode whilst the engine is running.
Still at a loss and still can't get rid of the asterix.

Click to expand...

Sounds like STSsetup is for you to do manually, so do it with motor not running and wheel not turning. DTSPPU is for doing a set up with the bike running over a set distance.

Thanks. Still trying to find out do I enter the numbers from the left or right and do I use decimal places seeing there is 6 digits.

aplogies for the confusion, you are quite correct the unit is normally put in to DTS-mode (drive-to-set) before the machine is started and as the instrument is powered up. In circumstances where the unit drops out of this mode when the engine is fired up it is recommended to start the machine and then power the instrument on and into DTS setup mode, we often have this situation with our A65 BSA with standard charging system which will drop the speedometer out of DTS mode when kicked over.......... sometimes it doesn't.
We power up the unit separately by removing and reinserting the fuse.
The manual calibration is entered with the last figure furtherst to the right as with all decimals, with a new instrument the factory calibration is "008380" if a users calculation is 804 (for example) the correct figure would be (and appear in the lcd screen) as "000804"

latest instruction set viewable here http://www.puca.co/tech.html scroll down to the bottom of the page and click on the wiring diagram tags.

Hi.
The On-going problem is that I cannot get the gauge to enter the DTS set up with the engine running.
When the engine is running, the gauge will only switch from odometer to trip.

Hi, if the unit is already powered on when you start the engine then yes it will only switch between odo and trip. The setup mode is entered by holding the toggle function to negative before powering on.
If your speedo drops out of set mode when you start the bike's engine then you will have to power on the speedo after you have started the bike, on our test bike we do this by removing the 3A fuse to the speedo and reinserting following the normal procedure to enter setup mode (as per the instructions)

Please contact us directly if you need more specific help.

Don't these things work straight out of the box? I quite fancy one but it sounds very complex, if you make a tiny error on your marked km will the speedo and odometer read wrong ?

Hi hillbone, ive got the same problem mate with the asterix and 5 zeros, did you findout the fix?