HP NuDAQ I-9111DG/HR manual D/A Conversion, 44mV 88mV

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4.4D/A Conversion

The PCI-9111 has one analog output channel. The signal range can be uni-polar or bi-polar which are set by JP1.

-10V		Pin- 30 (DA Out)
Ref In		Pin- 30 (DA Out)
D/A Converter	-	To D/A Output
	+	To D/A Output
	+
		Analog GND

The operation of D/A conversion is simpler than A/D operation. You only need to write digital values into the D/A data registers and the corresponding voltage will be output from the DA Out (pin-30 of CN3). Refer to section 3.15 for information about the D/A data registers. The mathematical relationship between the digital data DAn and the output voltage is formulated as following:

Vout	=	span x DAn / 4096	– Unipolar
Vout	=	span x DAn / 4096 + (-10)	– Bipolar

where span is the span in volts. If your output range is-10V~10V (Bipolar), then span is 20; if your output range is 0~10V (Unipolar), then span is 10. The Vout is the output voltage, and the DAn is the digital data value in the D/A data registers.

Before performing the D/A conversion, users should care about the D/A output range which is set by the JP1. Please refer section 2.4 for jumper setting.

	Digital Data Input	Analog Output

		Unipolar	Bipolar
		Unipolar	Bipolar
		0V ~ 10V	-10V ~ 10V
	FFF hex	+9.9976V	+9.9951V

	800 hex	+5.0000V	0.0000V

	7FF hex	+4.9976V	-0.0049V

	000 hex	0.0000V	-10.0000V

	1 LSB	2.44mV	4.88mV

Operation Theorem ∙33

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Contents NuDAQ Trademarks Questions Getting service from AdlinkPage B l e o f C o n t e n t s Features Applications Specifications Software SupportingPCI PnP Registers Address Map Interrupt Control Libraries Installation Programming GuideHardware Interrupt Clear Register ConversionTable of Contents ∙ 9111util What do you need VR Assignment AdjustmentHow to Use This Guide Page Introduction FeaturesApplications SpecificationsUnipolar 0~10V Bipolar -10V~+10V Programming Library Software SupportingDASYLabTM PRO PCIS-LVIEW LabVIEW DriverPCIS-VEE HP-VEE Driver DAQBenchTM ActiveX ControlsPCIS-OPC OPC Server PCIS-ICL InControlTM DriverUnpacking Installation∙ Software Installation Guide What You HavePCB Layout of the PCI-9111 PCI-9111s LayoutJumper Descriptions Hardware Installation OutlineConnectors Pin Assignment Device Installation for Windows Systems∙ CN 1 Digital Signal Input DI 0 ~ ∙ CN 3 Analog Input/Output, Extended I/O, Trigger Signals ∙ CN 2 Digital Signal Output do 0 ~Connect with ACLD-9182 Daughter Board ConnectionConnect with ACLD-8125 Connect with ACLD-9137PCI PnP Registers Registers FormatI/O Address I/O Address MapA/D Data Registers Address Write ReadAddress Base + 6h Attribute write only Data Format Bit A/D Channel Control RegisterAddress Base + 0h Attribute read only Data Format BitAddress Base + 8h Attribute write only Data Format Bit A/D Input Signal Range Control RegisterA/D Channel Read Back Register Address Base + 6h Attribute read only Data Format BitAddress Base + 0Ah Attribute write only Data Format Bit A/D Trigger Mode Control RegisterA/D Range and Status Read back Register Address Base + 8h Attribute read only Data Format BitAddress Base + 0Eh Attribute write only Data Format Bit Mode DescriptionAddress Base + 0Ch Attribute write only Data Format Bit Address Base + 0Ah Attribute read only Data Format Bit 12 A/D Mode & Interrupt Control Read Back RegisterHardware Interrupt Clear Register Address Base + 48h Attribute write only Data Format BitAddress 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 A/D Conversion Operation Theorem2 A/D Signal Source Control 1 A/D Conversion ProcedureAnalog Input Signal Connection 3 A/D Trigger Source Control Signal RangeExternal Trigger EITS=1, TPST=don‘t care 4 A/D Data Transfer ModesFifo Half-Full Polling EOC Interrupt Transfer Pre-Trigger ControlTime FFF 6 A/D Data FormatInterrupt Control System Architecture IRQ Level SettingDual Interrupt System Extended Digital I/O Port Interrupt Source Control44mV 88mV D/A ConversionDigital Input and Output Timer/Counter Operation IntroductionPre-Trigger Counter Pacer Trigger Source4 I/O Address ++ Library Libraries InstallationData Types Programming Guide Naming Convention++ Windows 9111Initial9111DO ++ DOS9111DI 9111DOChannel9111EDI 9111DIChannel10 9111EDOReadBack 9111EDO11 9111SetEDOFunction 13 9111ADReadData 12 9111DA15 9111ADSetChannel 14 9111ADReadDataRepeat16 9111ADGetChannel Input Range Gain Gain Code 17 9111ADSetRange19 9111ADGetStatus 18 9111ADGetRange20 9111ADSetMode 22 9111INTSetReg 21 9111ADGetMode23 9111INTGetReg 24 9111ResetFIFO26 9111Set8254 25 9111ADSoftTrigger27 9111Get8254 28 9111ADTimer30 9111CounterRead 29 9111CounterStart31 9111CounterStop 32 9111INTSourceControl 34 9111GetIRQChannel 33 9111CLRIRQ36 9111ADFFHFPolling 35 9111GetIRQStatus38 9111ADHRAquire 37 9111ADAquire39 9111ADINTStart 40 9111ADFFHFINTStart ++ Library ∙61 42 9111ADFFHFINTStatus 41 9111ADINTStatus43 9111ADFFHFINTRestart 44 9111ADINTStop What do you need CalibrationVR Assignment A/D AdjustmentFunctions of VRs Bipolar Analog Output D/A Adjustment Unipolar Analog Output9111util Software UtilityRunning 9111util.exe System Configuration Calibration Function Testing Menu Window Functional TestingIeeprom Product Warranty/Service