I use the manual method.  If I run a mile and it reads 1.10 miles or 10% over and 1255 is the watch setting. Then I set it lower buy 10% or 122 = 1133.

 

Then try again and recalibrate again as needed.

 

Mine is +/_  5% which is fine with me, maybe if you run at one speed you can gain better accuracy.

 

I also developed a excel SS to recalibrate the results for a race, see my post # 17.  Simple logic is if you know correct distance 26.2 miles and watch reads 27.0 miles, then reduce distance numbers and speed by 3% . Graph is for a sub 4hr marathon.

 

Bob

 

 

----- Original Message -----

From: pro01232000

To: niketiming@yahoogroups.com

Sent: Saturday, July 23, 2005 6:38 AM

Subject: [niketiming] Should I adjust the offset value to 1000 when re-calibrating the SDM?

Hi there,

I re-calibrated the SDM and the previous offset value was 1032.

I ran 400 meter and the watch reads 412 m so I adjusted the distance
to be 400.

After checking the offset value I founded it 1004. If the watch reads
more than 400 meter so the offset value should be less than 1000.

I thought the SDM calculates the offset value based on the existing
one 1032.

Does anyone experience the same thing? or I need to calibrate again
but change the offset value to 1000.

Best Regards...

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