Fluke 863 - Page 51

Making Measurements
Measuring Frequency
2
2-23
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
y
Duty
Cycle
Pulse
Width Period Exit
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.
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.