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Appendix A Device-Specific Information
© National Instruments Corporation A-3 NI 6238/6239 User Manual
Note For more information about default NI-DAQmx counter inputs, refer to Connecting
Counter Signals in the NI-DAQmx Help or the LabVIEW 8.x Help.
NI 6238 Specifications
Refer to the NI 6238/6239 Specifications, available on the NI-DAQ Device
Document Browser or
ni.com/manuals, for more detailed information
on the NI 6238 device.
NI 6238 Accessory and Cabling Options
This section describes some cable and accessory options for the NI 6238
device. Refer to
ni.com for other accessory options including new devices.
Screw Terminal
National Instruments offers several styles of screw terminal connector
blocks. Use an SH37F-37M cable to connect an NI 6238 device to a
connector block, such as the following:
• CB-37F-HVD—37-pin DIN rail screw terminal block, UL
Recognized derated to 30 Vrms, 42.4 V
pk
, or 60 VDC
• CB-37FH—Horizontal DIN-mountable terminal block with 37 screw
terminals
• CB-37FV—Vertical DIN-mountable terminal block with 37 screw
terminals
• CB-37F-LP—Low profile terminal block with 37 screw terminals
• TB-2621—37-pin PXI screw terminal block, UL Recognized derated
to 30 Vrms, 42.4 V
pk
, or 60 VDC
RTSI
Use RTSI bus cables to connect timing and synchronization signals among
PCI devices, such as M Series, E Series, CAN, and other measurement,
CTR 1 OUT 36 (PFI 7) P1.1
CTR 1 A 15 (PFI 3) P0.3
CTR 1 Z 34 (PFI 4) P0.4
CTR 1 B 16 (PFI 5) P0.5
Table A-1. NI 6238 Device Default NI-DAQmx Counter/Timer Pins (Continued)
Counter/Timer Signal Default Pin Number (Name) Port