Fluke PM3370B CURSORS READOUT T-RATIO/PHASE

4 - 48 HOW TO USE THE INSTRUMENT
CURSORS READOUT ∆T-RATIO/PHASE
First, the reference distance between the two cursors is set. This then is set to
100 % (360°) by pressing the ∆T=100 % (360°) softkey. Changing the distance
between the cursors now results in a % (°) reading of the reference.
-Press the softkey next to ∆T until ∆T-ratio (phase) is intensified.
- Set the time cursors to be exactly one signal period apart.
-Press the softkey next to ∆T=100% (360°).
In the cursor readout line of the screen, the value for ∆T is now ’∆T=100%’
(∆T=360°)
Observe that the 100% (360°) reference does not change when the TRACK
control is turned.
- Adjust the cursors to a distance of half a signal period.
Now the ∆T in the readout area will read ’∆T= 50%’ (∆T=180°)
This is the way to use the cursors for duty cycle measurements.
50%
ch1:∆T=100% ch1: ∆T=50%
TRACK
∆V=600mV
∆V=600mV
∆T=100%
100%
∆
TRACK ∆ST6733