Fluke PM3370B Vertical CH1+CH2, 18HOW to USE the Instrument, Press the CH1+CH2 key once again

4 - 18HOW TO USE THE INSTRUMENT

VERTICAL CH1+CH2

-Using two probes, connect the Probe Adjust signal to Ch1 and Ch2.

-Press AUTOSET.

-Both Ch1 and Ch2 are now displayed.

-Adjust POS and AMPL to get a display as illustrated on the left below.

-Press the CH1+CH2 key.

In the analog mode, a third trace will appear on the screen. This trace has twice the amplitude of the Probe Adjust signal. The position of the third trace is affected by the position controls of both Ch1 and Ch2.

The display mode is indicated in the screen as ’1+2’.

1-
2-
CH1	500mV	CHP MTB 200μs	ch1
CH2	500mV

CH1+CH2

1-
2-
CH1	500mV	1+2
CH2	500mV	CHP MTB 200μs	ch1

ST5970

-Press the ANALOG key to switch to the Digital mode.

Observe that switching to the digital mode turns off the third trace. The ’1+2’ indication disappears.

-Press the CH1+CH2 key once again.

Observe that in the digital mode the (CH1+CH2) trace can be used as well. Simultaneous display of both channels together with the sum of both channels is not possible in the digital mode.

CH1 500mV CH2 500mV

1+2

MTB 200μs

ch1

CH1+CH2

1-
2-
CH1	500mV	ALT MTB 200μs	ch1
CH2	500mV

ST6720

-Press the ANALOG key to return to the analog mode.