Fluke CombiScope PM3370B User Manual page 63

4 - 18
VERTICAL
- 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
CH2 500mV CHP MTB
- 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 1+2
CH2 500mV MTB
- Press the ANALOG key to return to the analog mode.
200 s ch1
200 s ch1
HOW TO USE THE INSTRUMENT
1-
CH1+CH2
2-
CH1 500mV
CH2 500mV
1-
CH1+CH2
2-
CH1 500mV
CH2 500mV
CH1+CH2
1+2
CHP MTB 200 s ch1
ST5970
ALT MTB 200 s ch1
ST6720