Philips PM3350A - Horizontal Mode

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4 APPLICATIONS
4.2.2. HORIZONTAL MODE
In horizontal mode the following selections can be made:
Selection of horizontal time scale
by the T8 s.../is UP-DOWN key,
the X MAGN key.
The adjacent figure shows the time-base ranges in relation to the sample rate
and resolution. Only in SAMPLING mode repetitive signals are needed
(see also page 4.26).
The digital time-base has three modes:
ROLL
50 S/div ... 1 s/div {PM3350A/55/65A/75)
In ROLL mode the screen build-up is from right to left.
RECURRENT
0,5 s/div ... 0,5 uS/div {PM3350A/65A)
0,5 5/div ... 0,2 ;<s/div ■ (PM3355/75)
In RECURRENT mode the screen build-up is from left to right.
SAMPLING
0,2 ;.s/div ... 20 ns/div (PM3365A)
0,1 ,-s/div ... 20 ns/div (PM3375)
In SAMPLING mode repetitive signals are needed for a screen build-up from left
to right.
NOTE: The PM3350A/55 have no sampling mode !
By pressing the X MAGN key, a horizontal magnification of 2, 4, 8, 16, or 32
times can be obtained. Any part of interest in a magnified signal may be selected
for display by the DISPL PART UP-DOWN key.
By operating the DISPL PART UP-DOWN key, the displayed waveform will scroll
across the screen in the selected direction.
The LCD bar shows the actual position of the displayed part of the magnified
signal in relationship to the memory length.
NOTE: You can return to the default value of *1 magnification Oy pressing
the X MAGN key and then the RESET key simultaneously. Next,
pressing the DISPL PART key and RESET key results that the
displayed part is in the horizontal mid-position again.
4.2 USE AS A DIQITAL STORAGE OSCILLOSCOPE