Trigger State And Transition For Each Measurement - Agilent Technologies E5052A Programmer's Manual

Making a Measurement
Trigger System

Trigger state and transition for each measurement

The following subsections describe the states for each measurement and how the trigger
system switches among the states.
"Hold" State
When one of the following commands has been executed, the trigger system switches to
"Hold" state, interrupting the measurement which is underway (arrow "e" in "d" on Figure
3-1). When the power is turned on, the phase noise measurement is triggered, while the
continuous initiation mode is set to 'ON' for the phase noise measurement and the trigger
source is set to "Internal".
• :ABORt on page 96
*RST on page 275
•
During the "Hold" state, if either one of the following commands is executed or the
measurement switches to the "Initiate" state by the front panel control, then the trigger
system switches to the "Waiting for Trigger" state (arrow "f" in "a" in Figure 3-1). "xx"
specifies the measurements (PN,SP,FP,TR) that are now waiting for trigger.
• :INITiate:xx:IMMediate
• :INITiate:xx:CONTinuous ON
"Waiting for Trigger" State
The instrument is triggered (i.e., a trigger is detected) during the "Waiting for Trigger"
state, and then the trigger system switches to the "Measurement" state (arrow "B" in "b" in
Figure 3-1).
As shown in the table below, how the instrument is triggered differs depending on which
trigger source is specified.
Trigger Source
Internal trigger
External trigger
Bus trigger
Manual trigger
*1
Wide band trigger
*1
Narrow band trigger
52
How instrument is triggered
The instrument is automatically triggered itself.
The instrument is triggered when a trigger signal is fed
through the Ext Trig terminal.
The instrument is triggered when the *TRG command on
page 275 is issued.
The instrument is triggered when you press [Trigger] -
Trigger on the front panel.
-
[Trigger] Manual Trigger
In using the 'wideband mode' for the transient
measurement, the instrument is triggered when the
frequency of the measuring signal crosses the frequency
value of the wideband trigger setting.
In using the 'narrowband mode' for the transient
measurement, the instrument is triggered when the
frequency of the measuring signal crosses the frequency
value of the narrowband trigger setting.
3