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Appendix C
Advanced Hardware Configuration Settings
Trigger Input Termination
VXI-1394 User Manual for Windows
Located within the group of CLK10 switches is switch S4, which controls
whether to put a 50 Ω termination on the external trigger input SMB.
Figure C-9A shows the default setting for a nonterminated trigger input
SMB. Use the setting of Figure C-9B to terminate the trigger input SMB.
TERMINATE
Y
N
S1
OUT
IN
S2
NON
INV
S3
SMB
TRIG TERM
Y
N
S4
CLK10 SOURCE
SMB
ONBRD
S5
A. Does Not Terminate
Trigger Input (Default)
Figure C-9. SMB Trigger Input Termination
EXT
CLK10
S1
S2
S3
S4
S5
B. Terminate Trigger Input
C-12
TERMINATE
Y
N
EXT
CLK10
OUT
IN
NON
INV
SMB
TRIG TERM
Y
N
CLK10 SOURCE
SMB
ONBRD
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