National Instruments PXI-6070E User Manual page 163

© National Instruments Corporation
position. Figure A-23 shows the source type switch locations on the front
panel of the BNC DAQPads.
FS = Floating Source
GS = Grounded Source
USER 2
PWR COM
1 3 5 7 9 11 13 15 17 19 21 23 25 27 29
2 4 6 8 10 12 14 16 18 20 22 24 26 28 30
USER 1
FS GS
Figure A-23. BNC DAQPad Front Panel
Figure A-24 shows the analog input circuitry on BNC DAQPads. When the
switch is in the FS position, AI x – is grounded through a 0.1 µF capacitor
in parallel with a 5 kΩ resistor.
Figure A-24. BNC DAQPads Analog Input Circuitry
Appendix A
CTR 0 EXT DAC 0
OUT REF OUT
PFI 0/ DAC 1
TRIG 1 OUT
FS GS
GS
FS
FLOATING SOURCE GND REF SOURCE
AI x +
AI x –
GS
FS
0.1 µF 5 kΩ
AI GND
A-27
Device-Specific Information
Source Type
Switch
ACH 6 ACH 4 ACH 2 ACH 0
FS GS FS GS FS GS FS GS
ACH 7 ACH 5 ACH 3 ACH 1
FS GS FS GS FS GS
Source Type
Switch
E Series User Manual