VTI Instruments Corp.
174
EX1629 Command Set
For example, if a user wishes to arm the EX1629 on a negative edge signal coming into the digital I/O bus on
channels 0 and 3, then:
dioLines[1]
= 0000 1001 = 9 (0x09).
With regard to the
lxiOutput
parameter, it is important to note that since the EX1629 can simultaneously accept arm
events from multiple sources, it is necessary to reserve one of the LXI Trigger Bus lines to communicate these
events within the device and to other devices in a multi-device configuration. If the EX1629 is a master driving arm
events to peripheral slaves, the
lxiOutput
parameter indicates the LXI Trigger Bus line that will be used to
communicate the arm event to the slave devices. It is also necessary to configure this LXI Trigger Bus line to be
used as an output (see vtex1629_set_lxibus_configuration).
The
lxiInput
parameter specifies which trigger bus line the master device uses for its arm events. Although this
parameter is often set to the same value as
lxiOutput
, there are cases where it might be set to a different value. For
instance, when the device is configured as a master device in a star multi-box configuration, the master might output
the arm event on LXI2 and input it back in on LXI6.
E
XAMPLE
ViSession instrumentHandle;
ViStatus status;
ViInt16 lxilines[VTEX1629_MAX_LINES];
ViInt16 diolines[VTEX1629_MAX_LINES];
ViBoolean timer_enabled;
ViInt32 lxi_out, lxi_in;
…
status = vtex1629_get_pattern_arm_configuration(instrumentHandle,
lxilines, diolines,
&timer_enabled,
&lix_out,
&lxi_in);
Содержание EX1629
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