Horizontal Section + Menu Structure - Philips PM3320 Operating Manual

4-27E
HORIZONTAL SECTION AND MENU STRUCTURE
'cuRSOR cowTADL mewony puepLay
38 am O ©
j Cc) seria
omen,
Figure 4.11 Front panel view.
ero
Oatiasce
'Omer omty
Oner taco
This switch permits selection of the horizontal deflection coefficients
of the time base in 28 steps from 5 ns/div ... 5 s/div. in a 1-2-5
sequence. In ROLL mode from 50 ms/div ... 360 s/div.
The selected horizontal deflection coefficient is displayed in the
upper text area of the C.R.T. screen.
If the left side of the UP/DOWN control(s) is pushed more signal
periods will be displayed. This means that the TIME/DIV value
becomes bigger (e.g. the time-base jumps from 2 ms/div to 5 ms/div).
If the right side of the UP/DOWN control (ns) is pushed fewer signal
periods will be displayed.
This means that the TIME/DIV value becomes smaller (e.g. the time-
base jumps from 5 ms/div to 2 ms/div).
Pilot lamp indicating that aliasing is detected on the trigger channel.
If the pilotlamp is on, the wave form which is displayed on the screen
does not represent the real shape of the input signal. See also 4.3.11.
Pilot lamp indicating that the digital time-base is set in the random
sampling mode (100 ns/div.... 5 ns/div.). in this case only signals with
a repetitive character can be measured.
Pitot lamp indicating that the oscilloscope is not triggered.
If pushbutton HORIZONTAL MODE is pushed, the
HORIZONTAL MODE menu is displayed. See 4.2.6.1.