ADLINK Technology cPCI-9116 Guide de l'utilisateur télécharger pdf (Page 64)

54 • Software Utility & Calibration

6.2.3.1 PGA offset Calibration

1. Short the A/D channel 0 (pin 2 of J1) to ground (pin51 of J1).

2. Use multi-meter to measure the voltage between TP1 and TP2 on board.

3. Adjust VR4 to obtain the multi-meter value as close as possible to 0V.

6.2.3.2 Bipolar input Calibration

1. Calibrate the PGA offset as described in 6.2.3.1.

2. Connect A/D channel 0 (pin 2 of J1) to ground (pin 51 of J1), and Applied a

precise +5V to A/D channel 1 (pin 3 of J1).

3. Trim VR2 to obtain the reading of A/D channel 0 flicks between 0 to 1, and

Trim VR3 to obtain reading of A/D channel 1 flicks between 32766~32767.

6.2.3.3 Unipolar input Calibration

1. Calibrate the PGA offset as described in 6.2.3.1.

2. Applied a precise +5 V input signal to A/D channel 1 (pin 3 of J1).

3. Trim VR1 to obtain reading flicking between 0~1.

6.3 Functional Testing

This function is used to test the functions of the 9116 series card, it includes

Digital I/O testing, A/D polling test, A/D Interrupt Test, A/D with DMA test, A/D

with DMA & pre-trigger test, A/D with DMA & mn-trigger test, A/D with DMA &

post-trigger test, A/D with DMA & delay-trigger with re-trigger=3 test, and A/D

with continuous DMA test (Double buffer mode).

When you choose one of the testing functions from the function menu, a

diagram is displayed on the screen. The figure below is the function testing

menu window.

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ADLINK Technology cPCI-9116 Guide de l'utilisateur Page 64