Fluke 867B User Manual page 48

Either press the Full Auto softkey or manually adjust
the trigger levels in view mode to obtain a stable
frequency reading.
Using the Frequency Softkeys
x
Duty Pulse
y
Cycle Width
1 selects low side x or high side y pulse
for frequency, period, duty cycle, and pulse-width
measurements. Positive is the standard selection.
2 (Duty Cycle) selects duty cycle measurements
for the pulse (negative going or positive going)
selected with 1.
3 (Pulse Width) selects pulse-width
measurements for the pulse (negative going or
positive going) selected with 1.
4 (Period) selects period measurements of the
full signal (negative going or positive going).
5 (Exit) returns to the Display Mode Softkeys.
Period Exit
Making Measurements
Frequency Operation
The frequency measurement type (Hz, duty cycle,
pulse width, or period) normally appears in the
secondary display. F swaps primary and
secondary display readings and accesses the
Frequency Softkeys. You can then select a new
frequency type.
Press F a second time to restore the selector
function to the primary display and move the
frequency reading back to the secondary display.
Press F at any time to swap primary and
secondary readings.
2
Measuring Frequency
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