B&K PRECISION BK5493CGPIB [37/57] Math functions

Secondary Measurement

Several measurement functions support secondary measurements. Secondary display measurements

are only available when using Number or Bar Meter display modes only.

Primary measurement function

Available secondary measurement function(s)

DCV

BeforeMath

DCI

BeforeMath

ACV

BeforeMath, Frequency

ACI

BeforeMath, Frequency

2W, 4W Resistance

Before math

Frequency

BeforeMath, AC Voltage, Period

Temperature

BeforeMath, Resistance

Capacitance

BeforeMath

The BeforeMath secondary function displays raw measurement values when a Math function is

applied to the primary measurement.

Math Functions

Press then press to enter the math settings interface.

5.1 Null Operation

When using the Null function, the instrument takes the existing reading as a reference value, and the

subsequent readings subtract the reference value based on the actual input value.

Display reading = actual reading – reference value

Different measurement functions can set different reference values; once the reference value is set,

the reference values are the same for all ranges under the function.

Using the Null function does not increase the maximum allowed input signal for this range.

Set a user-defined null value using the softkeys and cursor navigation keys.

5.2 Statistics

Display the minimum (Min), maximum (Max), peak-to-peak (P-P), average (Average), standard

deviation (Std dev), and the total number of samples in the reading buffer.

The reading buffer can hold up to 10,000 data samples. When the reading buffer overflows, the oldest

data will be discarded. Press ‘Clear Readings’ using the softkey to reset the reading buffer.