BK Precision 894 User Manual

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2) Press any of the softkey to change the output impedance..
Deviation Test Function (DEV A/DEV B)
The deviation value is equivalent to the real test value subtracted from the pre-set reference
value. This function is useful when observing variations of component parameters.
 Δy (Absolute Deviation mode)
Displays the difference between the test value of the DUT and the preset reference
value. The formula for calculating ΔABS is shown below:
ΔABS=X-Y
Where X is the test value of DUT
Y is the preset reference value
 Δ% (Percentage deviation mode)
Displays the percent difference between the test value of DUT and the preset reference
value divided by the reference value. It is calculated by the below formula:
Δ%=(X-Y)/Y*100[%]
Where X is the test value of DUT
Y is the preset reference value
Setting Deviation Test Function
1. In the <MEASURE SETUP> page, move the cursor to DEV A/DEV B. The following
softkeys will be displayed:
o ABS: Absolute Deviation Mode
o %: Percentage Deviation Mode
o OFF
2. Press the above softkeys to select the type of Deviation or to disable the function.
3. Move the cursor to the primary parameter REF A or the secondary parameter REF B to
input the reference values.
o To measure the reference parameter, place a component in the test terminal
and press the Measure key that will be displayed on the top right corner of the
screen.
o To enter the reference parameter, use the numerical keys; the following units
will be available in the softkey field: p, n, u, m, press the -> to see the options k,
M, and *1. Press either of them to select the unit.
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BK Precision 894 Specifications

General

Brand	BK Precision
Model	894
Category	Measuring Instruments
Language	English