Advantech PCI-1720, Руководство пользователя

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PCI-1720 & 1720U User Manual vi
Table 3.2: Identity Register of PCI-1720U ........................... 21
Chapter 4 Register Structure and Format.................... 24
4.1 Overview ................................................................................... 24
4.2 I/O Port Address Map................................................................ 25
Table 4.1: Register Format and Function Description .......... 25
4.2.1 D/A Output Channel 0 to 3 ..................................................... 26
Table 4.2: Register for D/A Data .......................................... 26
4.2.2 D/A Voltage Range and Polarity ............................................ 26
Table 4.3: Register for D/A Voltage Range and Polarity ..... 26
Table 4.4: Output Range of D/A Channel n ......................... 26
4.2.3 Synchronized Output Prompt Register ................................... 27
4.2.4 Synchronized Output Control Bitt .......................................... 27
Table 4.5: Synchronized Output Control Bit ........................ 27
4.3 Unipolar and Bipolar Binary Code Tables ................................ 28
Table 4.6: Unipolar Binary Code Table ............................... 28
Table 4.7: Bipolar Binary Code Table .................................. 28
Chapter 5 Signal Connections ........................................ 30
5.1 Overview ................................................................................... 30
5.2 D/A Voltage Output Connections.............................................. 30
Figure 5.1: Floating-load Conn. for D/A Voltage Output ...... 30
Figure 5.2: Grounded-load Conn. for D/A Voltage Output ... 31
Figure 5.3: Differential-load Conn. for D/A Voltage Output 31
5.3 Current Sink Connections.......................................................... 32
Figure 5.4: Grounded-load connection with a floating power
supply .................................................................. 32
Figure 5.5: Floating-load connection with a grounded power
supply .................................................................. 32
Figure 5.6: Floating-load Conn. with an In12 VDC Pow-
er Supply .............................................................. 33
5.4 Current Sink Load and Power Supply ....................................... 33
Figure 5.7: PCI-1720U Current Sink Circuitry ...................... 33
Appendix A Calibration ..................................................... 36
A.1 Overview ................................................................................... 36
A.2 Starting Calibration.................................................................... 37
Figure A.1: PCI-1720U VR assignment ................................. 37
A.3 Unipolar Output Calibration...................................................... 38
A.4 Bipolar Output Calibration ........................................................ 38
A.5 Current Sink Calibration............................................................ 38