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Appendix A Device-Specific Information
© National Instruments Corporation A-11 NI 6124/6154 User Manual
• CB-37FH—37-pin screw terminal block, horizontal, DIN rail mount
• CB-37FV—37-pin screw terminal block, vertical, DIN rail mount
• TB-37F-37CP—37-pin crimp & poke terminals, shell with strain
relief
• TB-37F-37SC—37-pin solder cup terminals, shell with strain relief
• CB-37F-HVD—37-pin screw terminal block, 150 V CAT II, DIN rail
mount
To connect your DAQ device to a screw terminal accessory, use one of the
following cables:
• SH37F-37M-2—37-pin female-to-male shielded I/O cable, 150 V,
2 m (non-EMI shielding)
• SH37F-37M-1—37-pin female-to-male shielded I/O cable, 150 V,
1 m (non-EMI shielding)
• SH37F-P-4—37-pin female-to-pigtails shielded I/O cable, 4 m
• R37F-37M-1—37-pin female-to-male ribbon I/O cable, 1 m
1
• DB37M-DB37F-EP—37-pin male-to-female enhanced performance
shielded I/O cable, 1 m (EMI shielding)
For more information about optional equipment available from National
Instruments, refer to the National Instruments catalog or visit the National
Instruments Web site at
ni.com.
NI 6154 Isolation and Digital Isolators
The NI 6154 is an isolated data acquisition device. As shown in Figure 2-2,
General NI 6124 Block Diagram, the analog input, analog output, and
PFI/static DIO circuitry are referenced to separate isolated grounds for each
circuit. The bus interface circuitry, RTSI, digital routing, and clock
generation are all referenced to a non-isolated ground. Table A-3 shows the
ground symbols referenced in Figure 2-2.
1
Not recommended for EMC-sensitive applications.
Table A-3. Ground Symbols
Ground Symbol
Isolated Ground
Non-Isolated Ground