Analog Input Signal Connection | HP NuDAQ I-9111DG/HR guide

Analog Input Signal Connection

The PCI-9111 provides 16 single-ended analog input channels. The analog signal can be converted to digital value by the A/D converter. To avoid ground loops and get more accurate measurement of A/D value, it is quite important to understand the signal source type. The single -ended mode has only one input relative to ground and is suitable for connecting with the floating signal source. The floating source means it does not have any connection to real ground. The following figure shows the single-ended connection. Note that when more than two floating sources are connected, the sources must be with common ground.

Floating

Signal

Source

V1

	AIN	Input Multipexer
	AIN	Opertional
		Amplifier
...		To A/D Converter
		To A/D Converter
V2
n = 0, ..., 15	AGND
n = 0, ..., 15

Signal Channel Control

There are two ways to control the channel number. The first one is the software programming and the second one is the auto channel scanning which is controlled by the ASCAN bit in AD mode control register. As ASCAN is cleared (0), the value of AD channel MUX register defines the channel to be selected. Only one channel can be selected in this situation.

As ASCAN is set (1), the value in AD channel MUX register defines the ending channel number of auto -scanning operation. Under auto scan mode, the channel is scanning from channel 0 to the ending channel. Whenever a trigger signal is rising, the channel number to be selected will increase automatically. For example, if the ending channel number is 3, the auto channel scanning sequence is 0, 1, 2, 3, 0, 1, 2..., until the ASCAN bit is cleared.

The current A/D channel number could be read back from the A/D data register on 12 bits PCI-9111 DG but it is not possible to be read back for PCI-9111HR.

Note that the MUX register is 8 bits. The 4 LSBs is used to select the multiplexer on board. The 4 MSBs could be sent out via the EDO pins of the CN3 connector to select the external daughter board. At most 16 daughter board can be selected and total 256 channels can be selected without extra circuits.

24 ∙ Operation Theorem

Image 34

HP NuDAQ I-9111DG/HR manual Analog Input Signal Connection

Contents

NuDAQ Trademarks Getting service from Adlink QuestionsPage B l e o f C o n t e n t s Features Applications Specifications Software SupportingPCI PnP Registers Address Map Conversion Libraries Installation Programming GuideHardware Interrupt Clear Register Interrupt Control Table of Contents ∙ What do you need VR Assignment Adjustment 9111util How to Use This Guide Page Features Introduction Specifications Applications Unipolar 0~10V Bipolar -10V~+10V Software Supporting Programming Library DAQBenchTM ActiveX Controls PCIS-LVIEW LabVIEW DriverPCIS-VEE HP-VEE Driver DASYLabTM PRO PCIS-ICL InControlTM Driver PCIS-OPC OPC Server What You Have Installation∙ Software Installation Guide Unpacking PCI-9111s Layout PCB Layout of the PCI-9111 Hardware Installation Outline Jumper Descriptions Connectors Pin Assignment Device Installation for Windows Systems∙ CN 1 Digital Signal Input DI 0 ~ ∙ CN 2 Digital Signal Output do 0 ~ ∙ CN 3 Analog Input/Output, Extended I/O, Trigger Signals Connect with ACLD-9137 Daughter Board ConnectionConnect with ACLD-8125 Connect with ACLD-9182 Registers Format PCI PnP Registers Address Write Read I/O Address MapA/D Data Registers I/O Address Bit A/D Channel Control RegisterAddress Base + 0h Attribute read only Data Format Address Base + 6h Attribute write only Data Format Bit Address Base + 6h Attribute read only Data Format Bit A/D Input Signal Range Control RegisterA/D Channel Read Back Register Address Base + 8h Attribute write only Data Format Bit Address Base + 8h Attribute read only Data Format Bit A/D Trigger Mode Control RegisterA/D Range and Status Read back Register Address Base + 0Ah Attribute write only Data Format Bit Address Base + 0Eh Attribute write only Data Format Bit Mode DescriptionAddress Base + 0Ch Attribute write only Data Format Bit Address Base + 48h Attribute write only Data Format Bit 12 A/D Mode & Interrupt Control Read Back RegisterHardware Interrupt Clear Register Address Base + 0Ah Attribute read only Data Format Bit Address Base + 4h Attribute read only Data Format Bit Address Base + 4h Attribute write only Data Format BitAddress Base + 2h Attribute read only Data Format Address Base + 2h Attribute write only Data Format Bit 15 D/A Output RegisterAddress Base + 40h ~ Base + 46h Operation Theorem A/D Conversion 1 A/D Conversion Procedure 2 A/D Signal Source Control Analog Input Signal Connection Signal Range 3 A/D Trigger Source Control 4 A/D Data Transfer Modes External Trigger EITS=1, TPST=don‘t care Fifo Half-Full Polling Pre-Trigger Control EOC Interrupt Transfer Time 6 A/D Data Format FFF Interrupt Control System Architecture IRQ Level SettingDual Interrupt System Interrupt Source Control Extended Digital I/O Port D/A Conversion 44mV 88mV Timer/Counter Operation Introduction Digital Input and Output Pre-Trigger Counter Pacer Trigger Source4 I/O Address Libraries Installation ++ Library Programming Guide Naming Convention Data Types ++ DOS 9111Initial9111DO ++ Windows 9111DOChannel 9111DI 9111DIChannel 9111EDI 9111EDO 10 9111EDOReadBack 11 9111SetEDOFunction 12 9111DA 13 9111ADReadData 14 9111ADReadDataRepeat 15 9111ADSetChannel 16 9111ADGetChannel 17 9111ADSetRange Input Range Gain Gain Code 18 9111ADGetRange 19 9111ADGetStatus 20 9111ADSetMode 21 9111ADGetMode 22 9111INTSetReg 24 9111ResetFIFO 23 9111INTGetReg 25 9111ADSoftTrigger 26 9111Set8254 28 9111ADTimer 27 9111Get8254 29 9111CounterStart 30 9111CounterRead 31 9111CounterStop 32 9111INTSourceControl 33 9111CLRIRQ 34 9111GetIRQChannel 35 9111GetIRQStatus 36 9111ADFFHFPolling 37 9111ADAquire 38 9111ADHRAquire 39 9111ADINTStart 40 9111ADFFHFINTStart ++ Library ∙61 41 9111ADINTStatus 42 9111ADFFHFINTStatus 43 9111ADFFHFINTRestart 44 9111ADINTStop Calibration What do you need VR Assignment A/D AdjustmentFunctions of VRs D/A Adjustment Unipolar Analog Output Bipolar Analog Output 9111util Software UtilityRunning 9111util.exe System Configuration Calibration Functional Testing Function Testing Menu Window Ieeprom Product Warranty/Service