User`s guide

Agilent B2900 User’s Guide, Edition 2 6- 27
Function Details
Trigger System
Trigger System
B2900 supports the ARM-TRIGger model described in 1999 SCPI Command
Reference. The ARM-TRIGger model shows independent event detection for the
ARM and TRIGger layers. This layered model is similar to the for-loop statement of
programming languages. When the trigger system is initiated, the ARM layer waits
for the specified ARM source signal. After the ARM condition is satisfied, the
control is passed to the TRIGger layer. The TRIGger layer waits for the specified
TRIGger source signal, and launches the device action(s) when the TRIGger
condition is satisfied. Both layers have repeat count.
B2900 has both source and measure functions, and has the independent
ARM-TRIGger model’s operation for each function and channel. See
Figure 6-8.
ARM-TRIGger operations can be controlled independently or simultaneously.
Trigger Source
B2900 supports the following trigger sources.
• AUTO (automatic internal, AINT): Automatically selects the trigger source best
suited for the present operating mode by using internal algorithms.
• BUS: Trigger source will be the remote interface trigger command such as the
group execute trigger (GET) and the *TRG command.
• TIMER (timer, TIMer): Trigger source will be a signal internally generated
every interval set by the Period parameter.
• INT1 or INT2 (internal): Trigger source will be a signal from the internal bus 1
or 2, respectively.
• EXT1, EXT2, EXT3, EXT4, EXT5, EXT6, EXT7, EXT8, EXT9, EXT10,
EXT11, EXT12, EXT13, or EXT14 (external): Trigger source will be a signal
from the DIO pin n which is an output port of the Digital I/O D-sub connector on
the rear panel. n=1 to 14.
• LAN: Trigger source will be the LXI trigger.
The trigger setup parameters can be set by the “Trigger parameters” on page 4-15 of
the Single view, or the “Trigger Configuration dialog box” on page 4-36.