ADLINK PCI-9846 - Manual (Page 12)

2 Introduction
Flexible Triggering
The PCI/PXI-9816/26/46 feature flexible triggering options such as
a software trigger, external digital trigger, an analog trigger from
any of the analog input channels and triggers from the PXI trigger
bus. These versatile trigger sources allow you to configure the
PCI/PXI-9816/26/46 to fit your application needs. Post-trigger,
delay-trigger, pre-trigger and middle-trigger modes are also avail-
able to acquire data around the trigger event. The PCI/PXI-9816/
26/46 also features repeated trigger acquisition, so you can
acquire data in multiple segments with successive trigger events
at extremely short rearming intervals.
Multiple-Module Synchronization
The versatile trigger options provided by the PXI backplane allow
the PCI/PXI-9816/26/46 to achieve multi-module synchronization
in a simplified way. Utilizing the PXI Trigger bus, the PCI/PXI-
9816/26/46 can output trigger signals and the timebase to the PXI
trigger bus when configured as a master, or receive trigger signals
and the timebase from the PXI trigger bus when configured as a
slave. Moreover, when the PCI/PXI-9816/26/46 is plugged into a
peripheral slot of a PXI system, they can also receive triggers or
the timebase from the PXI star trigger controller slot. The precision
10 MHz clock that comes from the PXI backplane can also be
used as one of the timebase sources. Combining these PXI trigger
features with the interface of the PCI/PXI-9816/26/46 makes it
very easy to synchronize multiple modules.
Calibration
The PCI/PXI-9816/26/46 include a precision on-board reference
with very low temperature drift. This feature not only provides a
stable calibration source for auto-calibration but also maintains
stable acquisition accuracy over a wide temperature range. The
automated calibration process can be done through software with-
out need for any manually adjustments. Once the calibration pro-
cess has completed, the calibration information will be stored in
the on-board EEPROM so that the values can be loaded and used
as needed by the board.