Appendix C
Advanced Hardware Configuration Settings
©
National Instruments Corporation
C-11
VXI-1394 Interface for Windows NT/98
Trigger Input Termination
Located within the group of CLK10 switches is switch S5, which controls
whether to put a 50
Ω
termination on the external trigger input SMB.
Figure C-10A shows the default setting for a non-terminated trigger input
SMB. Use the setting of Figure C-10B to terminate the trigger input SMB.
Figure C-10.
SMB Trigger Input Termination
EXT
CLK10
TERMINATE
Y
N
SMB
TRIG TERM
OUT
IN
NON
INV
S2
S3
S4
S5
S6
Y
N
CLK10 SOURCE
SMB
ONBRD
EXT
CLK10
TERMINATE
Y
N
SMB
TRIG TERM
OUT
IN
NON
INV
S2
S3
S4
S5
S6
Y
N
CLK10 SOURCE
SMB
ONBRD
A. Does Not Terminate
Trigger Input (Default)
B. Terminate Trigger Input
