Appendix B
I/O Connector
©
National Instruments Corporation
B-5
AT-MIO-16X User Manual
8, 14
34, 35
+5 V
+5 VDC Source—These pins are fused for
up to 1 A of +5 V supply.
46
36
SCANCLK
Scan Clock—This pin pulses once for each
A/D conversion in the scanning modes. The
low-to-high edge indicates when the input
signal can be removed from the input or
switched to another signal.
45
37
EXTSTROBE*
External Strobe—Writing to the
EXTSTROBE Register results in a
minimum 500-nsec low pulse on this pin.
11
38
EXTTRIG*
External Trigger—In posttrigger data
acquisition sequences, a high-to-low edge
on EXTTRIG* initiates the sequence. In
pretrigger applications, the first high-to-low
edge of EXTTRIG* initiates pretrigger
conversions while the second high-to-low
edge initiates the posttrigger sequence.
10
39
EXTGATE*
External Gate—When EXTGATE* is low,
A/D conversions are inhibited. When
EXTGATE* is high, A/D conversions are
enabled.
43
40
EXTCONV*
External Convert—A high-to-low edge
on EXTCONV* causes an A/D conversion
to occur. Conversions initiated by the
EXTCONV* signal are inhibited outside of
a data acquisition sequence, and when
gated off.
42
41
SOURCE1
SOURCE1—This pin is from the Am9513A
Counter 1 signal.
41
42
GATE1
GATE1—This pin is from the Am9513A
Counter 1 signal.
Table B-1. Signal Connection Descriptions (Continued)
68-Pin Pins
50-Pin Pins
Signal Names
Descriptions
Summary of Contents for DAQ AT-MIO-16X
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