Appendix C
Advanced Hardware Configuration Settings
©
National Instruments Corporation
C-9
VXI-1394 Interface for Windows NT/98
Figure C-7.
Receive External CLK SMB with 50
Ω
Termination
and Drive to the Backplane
Figures C-8 and C-9 show two configurations for driving the external CLK
SMB from the VXIbus CLK10 signal by changing switch S3 to its alternate
setting. Switch S6 must be in its default position for these configurations.
Signal termination is not an issue when driving the signal, so the position
of S2 does not matter. The difference between these two configurations is
whether to use inverted or non-inverted polarity when driving the signal.
EXT
CLK10
TERMINATE
Y
N
SMB
TRIG TERM
OUT
IN
NON
INV
S2
S3
S4
S5
S6
Y
N
CLK10 SOURCE
SMB
ONBRD
