Advantech PCI-1710 5.3 A/D Calibration

Chapter 5 Calibration 47

The following list shows the function of each VR:

VR Function

VR1 A/D unipolar offset

VR2 A/D bipolar offset

VR3 A/D full scale (gain)

VR4 D/A channel 0 full scale

VR5 D/A channel 1 full scale

5.3 A/D Calibration

Regular and accurate calibration procedures ensure the maximum

possible accuracy. The ADCAL.EXE calibration program leads you

through the whole A/D offset and gain adjustment procedure. The

basic steps are outlined below:

1. Set analog input channel AI0 as single-ended, bipolar, range ±5 V,

and set AI1 as single-ended, unipolar, range 0 to 10 V.

2. Connect a DC voltage source with value equal to 0.5 LSB

(-4.9959 V) to AI0.

3. Adjust VR2 until the output codes from the card's AI0 flickers

between 0 and 1.

4. Connect a DC voltage source with a value of 4094.5 LSB (4.9953

V) to AI0.

5. Adjust VR3 until the output codes from the card's AI0 flickers

between 4094 and 4095.

6. Repeat step 2 to step 5, adjusting VR2 and VR3.

7. Connect a DC voltage source with value equal to 0.5 LSB (1.22

mV) to AI1.

8. Adjust VR1 until the output codes from the card's AI1 flickers

between 0 and 1.

Contents

Main Page Contents Chapter 5: Calibration............................................ 4 5 Appendix A: 82C54 Counter Chip Functions ...... 5 1 Page 1.1 Introduction PCI-bus Plug and Play Flexible Inputs Types and Ranges Setting On-board FIFO (First In First Out) Memory On-board Programmable Counter 1.2 Features 1.3 Specifications Analog Input: Page Analog Output: Digital Input: Digital Output: Programmable Timer/Counter General: 8PCI-1710 /1710HG User's Manual 1.4 Block Diagram Figure 1-1: PCI-1710/PCI-1710HG block diagram Page 2.1 Initial Inspection 2.2 Unpacking 2.3 Installation Instructions Page Page 3.1 Overview 3.2 I/O Connector Pin Assignment Figure 3-1: I/O connector pin assignments for the PCI-1710/1710 HG card Chapter 3 Signal Connections 15 16 PCI-1710/1710HG User's Manual I/O Connector Signal Descriptions Chapter 3 Signal Connections 17 I/O Connector Signal Descriptions (part II) 18 PCI-1710/1710HG User's Manual I/O Connector Signal Descriptions (part III) 3.3 Analog Input Connections Single-ended Channel Connections Differential Channel Connections ExternalInternal Page Page 3.4 Analog Output Connections 3.5 Trigger Source Connections Internal Pacer Trigger Connection External Trigger Source Connection 3.6 Field Wiring Considerations Page Page 4.1 Overview 4.2 I/O Port Address Map Chapter 4 Register Structure and Format 29 Table 4-1: PCI-1710/1710HG register format (Part 1) Table 4-1: PCI-1710/1710HG register format (Part 2) 30 PCI-1710/1710HG User's Manual Table 4-1: PCI-1710/1710HG register format (Part 3) Chapter 4 Register Structure and Format 31 Table 4-1: PCI-1710/1710HG register format (Part 4) 32 PCI-1710/1710HG User's Manual 4.3 Channel Number and A/D Data BASE+0 and BASE+1 4.4 Software A/D Trigger BASE+0 4.5 A/D Channel Range Setting BASE+2 PCI-1710 The following table lists the gain codes for the PCI-1710: PCI-1710HG 4.6 MUX ControlBASE+4 and BASE+5 Page 4.7 Control Register BASE+6 4.8 Status Register BASE+6 and BASE+7 4.9 Clear Interrupt and FIFO BASE+8 and BASE+9 Page 4.12 D/A Reference Control BASE+14 Page Page 5.1 Introduction 5.2 VR Assignment 5.3 A/D Calibration 5.4 D/A Calibration 5.5 Self A/D Calibration Page Page A.1 The Intel 82C54 Counter 0 Counter 1 & 2 A.2 Counter Read/Write and Control Registers Description: Page Page A.3 Counter Operating Modes MODE 0 Stop on Terminal Count MODE 1 Programmable One-shot Pulse MODE 2 Rate Generator MODE 3 Square Wave Generator MODE 4 Software-Triggered Strobe MODE 5 Hardware-Triggered Strobe A.4 Counter Operations Read/Write Operation Counter Read-back Command Counter Latch Operation