National Instruments Module SCXI-1503 Instrukcja Użytkownika Pobierz pdf (Strona 15)

Chapter 2 Connecting Signals

SCXI-1503 User Manual 2-2 ni.com

Note Exceeding the differential or common-mode input channel ranges results in a

distorted signal measurement, and can also increase the settling time requirement of the

connected E/M Series DAQ device.

Ground-Referencing the Signals

Do not ground signals that are already ground-referenced; doing so results

in a ground loop, which can adversely affect the measurement accuracy.

Directly grounding floating signals to the chassis ground without using a

bias resistor is not recommended as this can result in noisy readings

Connecting Resistive Devices to the SCXI-1503

You can connect resistive devices to the SCXI signal conditioning system

in a 4-, 2-, or 3-wire configuration. Figures 2-1 through 2-4 illustrate

various ways to connect sensors for current excitation and voltage

measurements using the SCXI-1503 with the SCXI-1306 terminal block.

Refer to the appropriate ADE and SCXI documentation for information

concerning setting appropriate voltage gains for the analog inputs.

You can use the SCXI-1306 terminal block to make signal connections to

the SCXI-1503. When using the SCXI-1306 terminal block, refer to the

SCXI-1306 Terminal Block Installation Guide.

1 2 ... 10 11 12 13 14 15 16 17 18 19 20 ... 78 79

Brak uwag

National Instruments Module SCXI-1503 Instrukcja Użytkownika Strona 15