Appendix
78
2.29 Triggering a Sweep or Burst
There are 3 different trigger/gate sources:
External (this is default)
Internal (this is the programmable timebase)
Manual (this is the key on the front panel or the *TRG command on
the remote interface).
You can issue triggers from the front panel for sweeps and bursts using a
manual trigger or an internal trigger.
Internal or
“automatic
triggering”
Internal or “automatic” triggering is enabled with the default settings of the
81150A / 81160A. In this mode, the 81150A / 81160A outputs continuously
when the sweep or burst mode is selected.
When using the “automatic” triggering, the ‘Cont’ key is illuminated on the
Front Panel.
Bursts or sweeps are enabled by (Gated by) an active level at the selected
arming source:
External Input (External Signal) gated while high or low or both.
Man key on Front Panel, gated while pressed or released or both.
A burst or a sweep is triggered by an active edge at the selected arming
source.
Internal, select the triggering period.
External Input (External Signal) triggered by rising or falling or both
edges.
Man key on Front Panel, triggered by press or release or both.
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