Command Groups
2–24
TDS Family Oscilloscope Programmer Manual
Table 2–18: Status and Error Commands (Cont.)
Header Description
Device event status enable
Event status enable
Return standard event status register
Return event code
Return event code and message
Return number of events in queue
Identification
Operation complete
Return installed options
Power-on status clear
Query or set User Protected Data
Reset
Service request enable
Read status byte
Wait to continue
Trigger Commands
Trigger commands control all aspects of digitizing oscilloscope triggering. Table
2–19 lists these commands.
There are two triggers, main and delayed. Where appropriate, the command set
has parallel constructions for each trigger.
You can set the main or delayed triggers to edge mode. Edge triggering lets you
display a waveform at or near the point where the signal passes through a voltage
level of your choosing.
You can also set TDS 5XXA, 6XXA, and 7XXA main triggers to pulse and logic
modes. Pulse triggering lets the oscilloscope trigger whenever it detects a pulse
of a certain width or height. Logic triggering lets you logically combine the
signals on one or more channels. The digitizing oscilloscope then triggers when
it detects a certain combination of signal levels.
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