Miscellaneous Reference Information; Resistance And Temperature Measurement Accuracy; Maximum Sample Rate For Real-Time Data Collection - Texas Instruments CBL Manual Book

Miscellaneous Reference Information

Resistance and Temperature Measurement Accuracy

To obtain accurate resistance measurements, when data is collected for
several minutes, use an external power adapter.
The CBL uses the battery voltage as a reference when you are measuring
resistance to take temperature readings. The voltage is measured at the
beginning of sampling and used until sampling is complete (
indicator is lit on the display).
The accuracy of your collected data will be affected if there is any
change in the battery voltage during data collection. The external power
adapter will maintain a constant voltage level for the CBL.
Note: Do not connect an external power adapter to the CBL when the
SAMPLING
operating voltage during the measurement and affect the accuracy of the
collected data.

Maximum Sample Rate for Real-Time Data Collection

For real-time display of collected data, the Number of Samples
parameter is set to L1 (see "Number of Samples" on page 40). The
maximum sample rate is then, in part, determined by the speed of
execution of the calculator program. The maximum rate using various
calculators will be about 10–14 points per second (0.1–0.07 seconds
between samples).
Refer to the CBL é -Compatible Calculators Guidebook or the TI web site
at www.ti.com/calc/docs/sgraph for information specific to your
calculator.
Note: In the case of real-time data collection, any value entered for the
Sample Time parameter that is less than or equal to 0.20 causes the CBL
to collect data at this maximum rate.
indicator is lit on the CBL display. This would change the
CBLé System Guidebook
DONE
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