Measurement Specialties USB-1616HS-2 manual Specifications, Accuracy, Analog input specifications

Page 45

Chapter 5

Specifications

Typical for 25 °C unless otherwise specified.

Specifications in italic text are guaranteed by design.

Analog input

				Table 1. Analog input specifications

A/D converter type				Successive approximation
Resolution				16 bits
Number of channels				16 single-ended/8 differential, software-selectable.
				Up to 48 additional analog inputs per module are available with the optional AI-EXP48
				module. Expansion channel features are the same as those of the main channels.
Input ranges (software and				Bipolar: ±10 V, ±5 V, ±2 V, ±1 V , ±0.5 V, ±0.2 V, ±0.1 V
sequencer programmable)
Maximum sample rate				1 MHz
Nonlinearity (integral)				±2 LSB maximum
Nonlinearity (differential)				±1 LSB maximum
A/D pacing				Onboard input scan clock, external source (APR)
Trigger sources and modes				See Table 8
Acquisition data buffer				1 MSample
Data transfer				DMA
Configuration memory				Programmable I/O
Maximum usable input				Range: ±10 V, ±5 V, ±2 V, ±1 V, ±0.5 V				10.5 V maximum
voltage + common mode
voltage + common mode				Range: ±0.2 V, ±0.1 V				2.1 V maximum
voltage (CMV + Vin)				Range: ±0.2 V, ±0.1 V				2.1 V maximum
Signal to noise and distortion				72 dB typical for ±10 V range, 1 kHz fundamental
Total harmonic distortion				-80 dB typical for ±10 V range, 1 kHz fundamental
Calibration				Auto-calibration, calibration factors for each range stored onboard in non-volatile RAM.
CMRR @ 60 Hz				-70 dB typical DC to 1 kHz
Bias current				40 pA typical (0 °C to 35°C)
Crosstalk				-75 dB typical DC to 60 Hz; -65 dB typical @ 10 kHz
Input impedance				10 MΩ single-ended, 20 MΩ differential
Absolute maximum input				±30 V
voltage
Accuracy
				Table 2. Analog input accuracy specifications

Voltage range				Accuracy		Temperature coefficient			Noise (cts
				±(% of reading + %		±(ppm of reading + ppm range)/°C			RMS)
				range)
				23°C ±10 °C, 1 year
-10 V to 10 V				0.031% + 0.008%		14 + 8			2.0
-5 V to 5 V				0.031% + 0.009%		14 + 9			3.0
-2 V to 2 V				0.031% + 0.010%		14 +10			2.0
-1 V to 1 V		Note 1		0.031% + 0.02%		14 + 12			3.5	Note 2
-500 mV to 500 mV				0.031% + 0.04%		14 +18			5.5
-200 mV to 200 mV				0.036% + 0.075%		14 +12			8.0
-100 mV to 100 mV				0.042% + 0.15%		14 +18			14.0

45

Image 45

Contents Page USB-1616HS-2 Management committed to your satisfaction Trademark and Copyright Information Table of Contents USB-1616HS-2 Users Guide About this Users Guide Where to find more informationWhat you will learn from this users guide Conventions used in this users guideSoftware features Overview USB-1616HS-2 featuresIntroducing the USB-1616HS-2 ChapterTR-2U power supply and CA-1* line cord Installing the USB-1616HS-2What comes with your USB-1616HS-2 shipment? HardwareUnpacking the USB-1616HS-2 Installing the softwareAdditional documentation CA-96A expansion cableInstalling the hardware Connecting the board for I/O operations Configuring the hardwareConnectors, cables main I/O connector Information on signal connectionsUSB-1616HS-2 screw terminal pin out single-ended connections Screw terminal pin outsDSUB25 expansion connector pin out DSUB25F expansion connectorCA-96A expansion cable CablingUSB-1616HS-2 components Functional DetailsUSB-1616HS-2 components rear view External power connectorUSB-1616HS-2 functional block diagram USB-1616HS-2 block diagramAnalog input scanning Analog inputSettling time Example Analog channel scanning of voltage inputsAnalog and digital scanning, once per scan mode example Example Analog and digital scanning, once per scan modeAnalog and digital scanning, once per scan mode example Thermocouple input Tips for making accurate temperature measurementsShielding AveragingAnalog output Triggering Digital I/ODigital input scanning Digital outputs and pattern generationHardware analog triggering Digital triggeringSoftware-based triggering Counter inputs Stop trigger modesPre-triggering and post-triggering modes Tips for making high-speed counter measurements 1 MHz Totalize modeMapped channels Counter modesDebounce modes Trigger before stable mode Trigger after stable modeDebounce module Trigger before stable mode Debounce mode comparisonsOptimal debounce time for trigger before stable mode Encoder modeRepresentation of rotary shaft quadrature encoder Maximizing encoder accuracy Connecting the USB-1616HS-2 to an encoderTimer outputs Example Timer outputsTimer output frequency examples Detection setpoint overview Using multiple USB-1616HS-2s per PCCriteria input signal is equal to Action driven by condition Using the setpoint status register Setpoint configurationExamples of control outputs Detecting on analog input, DAC, and Firstportc updatesAnalog inputs with setpoints update on True and False Detection on an analog input, timer output updatesTimer output update on True and False Using the hysteresis functionDetecting setpoints on a totalizing counter Using multiple inputs to control one DAC outputFIRSTPORTC, DAC, or timer update latency Controlling analog, digital, and timer outputsDetection setpoint details Firstportc Calibrating the USB-1616HS-2 Analog input specifications SpecificationsAnalog input accuracy specifications AccuracyAnalog outputs Analog output specificationsThermocouples Thermocouple TC types and accuracy NoteDigital input/output Digital input/output specificationsInput sequencer specifications Counter specificationsCounters Input sequencerFrequency/pulse generator specifications Power consumptionPower consumption specifications Note Frequency/pulse generatorsUSB specifications External powerSignal I/O connectors and pin out EnvironmentalUSB-1616HS-2 screw terminal pin out single-ended connections USB-1616HS-2 screw terminal pin out differential connections USA Declaration of ConformityMailinfo@mccdaq.com