Dataman 520 Series - Manual (Page 39)

DATAMAN oscilloscope
User’s Guide
Left buttons control primary level, the right ones control secondary level.
“A” – activates/deactivates channel A as triggering source
“B” – activates/deactivates channel B as the triggering source
“E” – activates/deactivates triggering from the external triggering input (E)
- switches between sensitivity on leading/trailing edge
You can enter the required trigger event occurences count into NOP (primary level) or
NOS (secondary level) edit box. The count can be any value from 1 to 65535.
You can enter the minimum length of the trigger event considered as valid into PFL
(primary level) or SFL (secondary level) edit box.
TIP: You can use units in the PFL/SFL edit box (for example 45u is 45
microseconds). Valid units are: n – nano, u – micro, m – milli).
The after trigger amount controls are located in the bottom right corner.
Fig. 4.1.9.3. – After trigger amount controls
The button in the right switches between the following after trigger modes:
“HSC“ – Half of the memory is acquired after, the other half before the trigger.
“FSC“ – Whole memory is acquired after trigger. This in fact is the classic after
trigger mode.
“MIN“ – The amount of data acquired after the trigger is set to the minimal possible
value (pure before trigger mode).
“SET“ – The time acquired after the trigger event can be set by entering a value into
the edit box or using the scrollbar.
TIP: You can use units in the edit box (for example 45u is 45 microseconds).
Valid units are: n – nano, u – micro, m – milli).
TIP: Drag the trigger mark (red arrow) to set the after trigger amount. This
feature can be turned off in the main menu.
Click the „s“ or „%“ button to change the information, which will be displayed in the
after trigger edit box:
In case the „s“ is selected:
- the after trigger amount is displayed in seconds
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