Ad Input Signal - ICP DAS USA PCI-1002L User Manual

PCI-1002 Series Card
12-bit, 110 kS/s or 44 kS/s Multi-function Board
2.7 AD Input Signal Connection
The PCI-1002 series card can measure either single-ended or differential-type analog input signals.
The user must decide which mode is most suitable for measurement purposes. Please refer to the
Section 2.2 "JP1: AD Input Type
analog input type.
In general, there are four different analog signal connection methods, as shown in
Figure 2-7. The connection shown in
connection shown in Figure 2-4
but is only suitable for large analog input signals. The connection shown in
thermocouple connections and the connection shown in
input signals.
Note: In Figure 2-5, the maximum common mode voltage between the analog input source and the
AGND is 70 V , so the user must ensure that the input signals is within this specification. If the
p-p
common mode voltage is above 70 V
The simplest way to select your input signal connection configuration is listed below.
1. Grounding source input signal
2. Thermocouple input signal
3. Floating source input signal
4. If Vin > 0.1 V, gain<=10 and more channels are needed
5. Current source input signal
If you are unsure of the characteristics of your input signal, follow these test steps:
Step1: Try and record the measurement results when using
Step2: Try and record the measurement results when using
Step3: Try and record the measurement results when using
Step4: Compare the three results and select the best one.
Selection"to see how to configure the JP1 jumper based on your
Figure 2-3 is suitable for grounded analog input signals. The
is used to measure more channels than that shown in
, the input multiplexer will be permanently damaged!
p-p
User Manual, Ver. 3.0, Jun. 2018, PMH-015-30, Page: 16
Figure 2-5
Figure 2-6 is suitable for floating analog
 see
Figure 2-3
 see Figure 2-5
 see Figure 2-6
 see
Figure 2-4
 see Figure 2-7
Figure 2-3.
Figure 2-6.
Figure 2-4.
Figure 2-3 to
Figure 2-3,
is suitable for