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Author Topic: SM vs PL High Gear 02 Readings  (Read 2383 times)

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Offline Scoobum

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SM vs PL High Gear 02 Readings
« on: July 21 2017, 10:39:00 PM »
Recall on SM tonite showed 823...while PL checked in at 803. Any reason for the difference?
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Offline Steve Wood

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Re: SM vs PL High Gear 02 Readings
« Reply #1 on: July 22 2017, 09:20:14 AM »
probably something to do with the sampling rate
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Re: SM vs PL High Gear 02 Readings
« Reply #2 on: July 22 2017, 09:21:10 AM »
Thanks Steve
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Offline Shimy87

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Re: SM vs PL High Gear 02 Readings
« Reply #3 on: July 25 2017, 10:40:46 AM »
when I'm tuning mine seldom show the same numbers either?
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Re: SM vs PL High Gear 02 Readings
« Reply #4 on: July 25 2017, 11:35:47 AM »
Quote from: Shimy87 on July 25 2017, 10:40:46 AM
when I'm tuning mine seldom show the same numbers either?

Steve explained it in another thread. The ALDL port samples at 1.5 times per second...while PL is 5 times per second. I hit recall on the SM at the end of a run for KR...but I use PL for 02's in regard to tuning.
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Offline Steve Wood

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Re: SM vs PL High Gear 02 Readings
« Reply #5 on: July 25 2017, 12:06:24 PM »
Quote from: Scoobum on July 25 2017, 11:35:47 AM
Quote from: Shimy87 on July 25 2017, 10:40:46 AM
when I'm tuning mine seldom show the same numbers either?

Steve explained it in another thread. The ALDL port samples at 1.5 times per second...while PL is 5 times per second. I hit recall on the SM at the end of a run for KR...but I use PL for 02's in regard to tuning.



Let me rephrase that.  The ALDL port updates the SM approximately once every 1.5 seconds.  The PL updates a bit over 22 times per second.  The SM when connected to the PL instead of the ALDL port, updates 5 times per second.  Bob chose that rate because the eye has a hard time seeing change faster than that.

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