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Chapter 4 Connecting Signals
© National Instruments Corporation 4-27 NI PCI-6110/6111 User Manual
Figure 4-20 shows the timing for SCANCLK.
Figure 4-20. SCANCLK Signal Timing
EXTSTROBE* Signal
EXTSTROBE* is an output-only signal that generates either a single pulse
or a sequence of eight pulses in the hardware-strobe mode. An external
device can use this signal to latch signals or to trigger events. In the
single-pulse mode, software controls the level of EXTSTROBE*. A 10
µ
s
and a 1.2
µ
s clock are available for generating a sequence of eight pulses in
the hardware-strobe mode.
Note EXTSTROBE* cannot be enabled through NI-DAQ.
Figure 4-21 shows the timing for the hardware-strobe mode
EXTSTROBE* signal.
Figure 4-21. EXTSTROBE* Signal Timing
Waveform Generation Timing Connections
The analog group defined for the NI PCI-6110/6111 is controlled by
WFTRIG, UPDATE*, and UISOURCE.
t
w
= 450 ns
t
d
= 50 to 100 ns
CONVERT*
SCANCLK
t
d
t
w
t
w
= 600 ns or 5 µs
V
OH
V
OL
t
w
t
w