Appendix A
Specifications
©
National Instruments
A-3
VXI-MXI-Express Series User Manual
Front Panel I/O Connectors
EXT CLK SMB Connector
Output drive ........................................... 50
Ω
source terminated
output driver
Voltage level ................................................... 0.1 to 4.9 V into open circuit (typical)
0.1 to 2.5 V into 50
Ω
(typical)
Absolute maximum DC current ............. ±50 mA
Output coupling...................................... DC
TRIG IN SMB Connector
Input buffer ............................................ TTL compatible
Input coupling ........................................ DC
TRIG OUT SMB Connector
Output drive ........................................... 50
Ω
line driver
Voltage level............................................... 2.0 V minimum into 50
Ω
(typical)
Output coupling...................................... DC
Figure A-1.
Front Panel SMB Connectors
1
2
TRIG IN
1
2
1
2
TRIG OUT
EXT CLK (CLK10)