Справочник Пользователя для National Instruments NI-VXI
Chapter 3 Software Overview
© National Instruments Corporation
3-53
NI-VXI User Manual
general, however, National Instruments hardware has two current
configurations that provide triggering functionality:
configurations that provide triggering functionality:
•
Trigger control used on a VXI-MXI-1 frame extender when used as
an extending controller (under direct control of a root-level MXI-1
controller interface, such as an AT-MXI-1). These configurations
do not have the National Instruments Trigger Interface Chip (TIC)
on them.
an extending controller (under direct control of a root-level MXI-1
controller interface, such as an AT-MXI-1). These configurations
do not have the National Instruments Trigger Interface Chip (TIC)
on them.
Note:
VXI-MXI-1 and VXI-MXI-2 controllers that are configured for extender
only (that is, not extending controllers), as well as external MXI-1
controllers, do not have trigger functionality. See the section, Multiple
Mainframe Support, in Chapter 2, Introduction to the NI-VXI Functions,
for more information.
only (that is, not extending controllers), as well as external MXI-1
controllers, do not have trigger functionality. See the section, Multiple
Mainframe Support, in Chapter 2, Introduction to the NI-VXI Functions,
for more information.
•
An embedded controller, external MXI-2 controllers, or
VXI-MXI-2 remote controllers. These configurations do have the
National Instruments Trigger Interface Chip (TIC) on them.
VXI-MXI-2 remote controllers. These configurations do have the
National Instruments Trigger Interface Chip (TIC) on them.
External Controller/VXI-MXI-1 Trigger
Capabilities
All National Instruments external controllers (such as the AT-MXI-1)
that are connected to VXI-MXI-1 extending controllers have the same
basic trigger capabilities:
that are connected to VXI-MXI-1 extending controllers have the same
basic trigger capabilities:
•
Source a single TTL or ECL (0 and 1 only) trigger using any
protocol on any one of the backplane TTL trigger lines
protocol on any one of the backplane TTL trigger lines
•
Accept a single backplane TTL or ECL (0 and 1 only) trigger using
any protocol (as long as it does not source SEMI-SYNC and
ASYNC protocols at the same time)
any protocol (as long as it does not source SEMI-SYNC and
ASYNC protocols at the same time)
•
Map a front panel In connector to a TTL or ECL (0 or 1 only)
trigger line (sourcing will be disabled)
trigger line (sourcing will be disabled)
•
Source a TTL or ECL (0 or 1 only) trigger out the front panel
•
Map a TTL or ECL (0 or 1 only) trigger line from the backplane
out the front panel Out connector (accepting disabled) (Some
platforms do not have this capability.)
out the front panel Out connector (accepting disabled) (Some
platforms do not have this capability.)
The following capabilities are not supported:
•
Multiple-line support
•
Crosspoint switching
•
Signal conditioning
•
External connections other than the front panel In/Out