Figure 2-4. Connecting to single-ended input configuration
PCI-1002
Figure 2-5. connecting to thermocouple configuration
PCI-1002
Note: If the input signal is not thermocouple, the user should use an oscilloscope
to measure common mode voltage of Vin before connecting to PCI-1002. Don’t
use a voltage meter or multimeter.
CAUTION
:
In Figure 2-5, the maximum common mode voltage
between the analog input source and the AGND is 70Vp-p. Make sure that the
input signal is under specification first! If the common mode voltage is over
70Vp-p, the input multiplexer will be permanently damaged.
A/D CH 0 HI
A. GND
A/D CH n LO
A/D CH n HI
A/D CH 0 LO
Do not join LO to A.GND at the computer
A/D CH0
A/D CH1
A/D CH n
AGND
Es
PCI-1002 User’s Manual (Ver. 2.4, Mar./2004, PPH-015-24) ---- 20
