Fluke PM3370B user manual Acquire Envelope, Acquire Peak Detection

HOW TO USE THE INSTRUMENT 4 - 33

ACQUIRE ENVELOPE

The ENVELOPE mode records the minimum and the maximum of the signal over a number of acquisitions.

-Press the ACQUIRE key.

-Press the ’ENVELOPE’ softkey to turn it on.

ENVELOPE on

ENV

ST6480

The AVERAGE mode and the ENVELOPE modes are mutually exclusive. Observe that AVERAGE is automatically switched off. The text ’ENV’ appears in the bottom of the screen to indicate that the function is active.

The minimum and maximum of the input signal is stored and becomes visible on the screen. This process continues until it is turned off by the user.

-Turn the POS control of Ch1.

Observe that every time you change the settings of the scope (like trace POS) the ENVELOPE process automatically starts again.

-Press the ’ENVELOPE’ softkey to turn off the ENVELOPE mode.

ACQUIRE PEAK DETECTION

PEAK DETection automatically catches peak values (up to glitches of 10 ns width) of the input signal during a single acquisition.

-Press the ’PEAK DET’ softkey to turn it on.

The text ’PKD’ appears in the bottom of the screen to indicate that the function is active. Observe that any glitch on the input signal becomes visible on the screen.

Note: Regardless of the timebase speed selected, the scope is set to the highest sample rate, so that glitches up to the sample frequency can be caught (5 ns at 200 MS/s).

-Press the ’PEAK DET’ to turn it off again.