User manual

How to use the CB-68LPR screw terminal connections (note that the The pinout numbers/functions of the

PCIe-6321 (left) are the same pinout numbers/functions in the CB-68LPR (right) (Fig. 2.4.3.3.1):

If your preamp is not floating (ie if it is connected to mains power and mains ground) hook up:

For AD0:

Center wire of coaxial cable to pin 68 (AI0+)

Shield wire of coaxial cable to pin 34 (AI0-)

For AD1

Center wire of coaxial cable to pin 33 (AI1+)

Shield wire of coaxial cable to pin 66 (AI1-) and record in the DIFFERENTIAL mode (Section 2.8)

If your preamp IS floating (ie if it is NOT connected to mains power or mains ground) hook up:

For AD0:

Center wire of coaxial cable to pin 68 (AI0)

Shield wire of coaxial cable to pin 67 (AI Gnd)

For AD1

Center wire of coaxial cable to pin 33 (AI1)

Shield wire of coaxial cable to pin 32 (AI Gnd) and record in the RSE mode (Section 2.8)

Or if your preamp IS floating you could try recording in NRSE mode and hook up:

For AD0:

Center wire of coaxial cable to pin 68 (AI0)

Shield wire of coaxial cable to pin 62 (AI Sense)

For AD1

Center wire of coaxial cable to pin 33 (AI1)

Shield wire of coaxial cable to pin 62 (AI Sense)

And then hook your SYSTEM GROUND to pin 62 (AI Sense).

Use either RSE or NRSE depending on which one gives less noise (Section 2.8).

For connecting the digital outputs:

For SO:

Center wire of coaxial cable to pin 52 (P0.0)

Shield wire of coaxial cable to pin 53 (DGnd) and possibly also ground to your system ground if

necessary

For S1:

Center wire of coaxial cable to pin 17 (P0.1)

Shield wire of coaxial cable to pin 18 (DGnd) and possibly also ground to your system ground if

necessary