Tektronix CSA8000B, TDS8000B CSA8000B & TDS8000B User Manual 3-51

Triggering
CSA8000B & TDS8000B User Manual 3-51
Overview Control elements and resourcesTo use gated trigger (Cont.)
Enable gated
triggering
4. In the Enhanced Triggering options section of the dialog
box, check Gated Trigger.
Check to
enable
Complete set up 5. Attach an appropriate TTL-gating signal to the
TRIGGER GATE (TTL) rear-panel connector. Operation
is as follows:
HTriggering system will be disabled when the gating
signal is a TTL low, and instrument will not acquire.
HThe triggering system will be enabled when the
gating signal is a TTL high, and the instrument will
acquire.
HThere is an internal pull--up on the Gated Trigger
input such that if no drive signal is supplied or if the
input is left unconnected, triggering will be enabled
even if the Gated Trigger is selected in the Trig
Setup dialog box.
TRIGGER
GATE (TTL)
For more
information
6. Press the Help buttonintheTrigSetupdialogboxto
access the online assistance specific to triggering
commands. You can also read about key trigger
features in Keys to Using on page 3--40. See page 3--167 for information on online help.
End of Procedure