Agilent Technologies 4339B, Operation Manual

Page: 193 / 287

4339B Trigger System
Trigger System
This section provides information about the trigger system of the 4339B. SCPI denes a
common trigger model for several types of instruments . The trigger system allows you to have
specic control of your measurements .
Information on the trigger system requires more technical expertise than most other topics
covered in this chapter . But you can avoid having to learn the information in this section by
using the :INITiate commands to make your measurements .
4339B Trigger System Conguration
The trigger system synchronizes the 4339B measurement with specied events . Events
include GPIB trigger command or input pulse on Ext Trigger terminal. The trigger system also
allows you to specify the number of times to repeat a measurement and the delays between
measurements .
Figure 5-6. Trigger System Conguration
Figure 5-6 shows the conguration of the 4339B trigger system. Each block is a trigger state
. The 4339B moves between adjacent states depending on its conditions . The power ON state
is called the Idle state . Y ou can force the 4339B to the idle state using the :ABORt or *RST
command. The Initiate , ARM Event Detection , and Trigger Event Detection states branch
to the next state when the 4339B satises the specied conditions . The Sequence Operation
state signals the instrument hardware to take a measurement and waits for a signal indicating
that the measurement has been taken.
GPIB Reference 5-45