User manual

HP3458A Emulation Mode
H-20
Parameter <event>
<event> parameter Numeric equivalent Description
AUTO 1 Triggers automatically
EXT 2 Triggers on the negative edge of signal on external
trigger connector
SGL 3 Triggers once and reverts to HOLD
HOLD 4 Disables triggering
Default SGL (power-on = AUTO)
Query TRIG? Returns the currently specified trigger event.
Description TRIG selects the trigger event. Only those events listed may be used; the remaining trigger events not
listed are not supported by the Model 2002.
Example T EXT Select external trigger.
TRIG SGL Single trigger.
TARM
Purpose To specify the event that arms the trigger event.
Format TARM <event>, <#_arms>
Parameter <event>
<event> parameter Numeric equivalent Description
AUTO 1 Arms automatically
EXT 2 Arms on the negative edge of signal on external
trigger connector
SGL 3 Arms once and reverts to HOLD
HOLD 4 Disables arming
Default AUTO
Query TARM? Returns the currently selected arm event.
Description TARM defines the event that enables triggers. The number of arms can range from 1 to 99999, but
HP3458A parameters (0 to 2.1E9) are accepted and modified as appropriate. The remaining arm
events not listed are not supported by the Model 2002.
Example TARM EXT Arm on external trigger.