BNC 645 - Manual (Page 66)

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a. To specify the trigger source, press the softkey under Src
and then select among Ext (external) and Man (manual).
b. If manual trigger is selected, you may configure the trigger
out signal by pressing the softkey under Trig Out and then
select among OFF, rising-edge trigger and falling-edge
trigger.
c. If external source is selected, you may press the softkey
under Slope to toggle between rising edge trigger and
falling edge trigger.
d. Press the softkey under DONE to finish the trigger setting.
Pattern Out
This is a parallel interface including an edge-selectable clock and 16-bit
data. You can use this interface to send any data through this interface at
the speed 1uHz to 50MHz.
Press the soft key [PATT Mode] to select Pattern Mode
Set the frequency of the pattern clock, 1uHz ~ 50MHz.
This setting is familiar with Figure 3-3 frequency setting.
Select file name of the pattern, such as EXP_RISE, EXP_FALL,
NEG_RAMP, SINC, CARDIAC. This setting is same as arbitrary waveform
selection.
Set the start address (min. 1) of the pattern.