HP 54620A, User'S And Service Manual

Page: 97 / 243

To measure waveform parameters on a single channel
1
Press
Single Channel
.
2
Select the channel on which you want to make a measurement by
using the Entry knob or Select knob, or by pressing the
Source
softkey.
If you want to measure a parameter for a channel that is off, first turn the
channel on.
3
Select a measurement.
•
To measure frequency, press the
Freq
softkey.
•
To measure period, press the
Period
softkey.
•
To measure duty cycle, press the
Duty Cy
softkey.
•
To measure positive width, press the
Next Menu
softkey, then press the
+Width
softkey.
The positive width of a waveform is the time for which that waveform
is high (logic 1).
•
To measure negative width, press the
Next Menu
softkey, then press the
–Width
softkey.
The negative width of a waveform is the time for which that
waveform is low (logic 0).
The selected measurement appears in the measurement field of the display.
The measurement field shows a maximum of three measurements. If you
select additional measurements beyond those three, the left-hand
measurement is deleted and others are moved left to make room for the new
measurement. If you select a measurement that is already displayed, it is
moved to the rightmost position in the measurement field.
You must select the desired channel before pressing the softkey to start the
measurement.
You may repeat the above steps as desired to measure parameters of
different input channels. The three most recent single- or dual-channel
measurements (of any kind) will be shown on the message line of the display.
Making Analyzer Measurements
To measure waveform parameters on a single channel
96