USB-2416 Series
24-Bit Multifunction Temperature & Voltage DevicesFeatures• Measure thermocouples orvoltage• 32 analog inputs, expandableto 64• 24-bit resolution• 1 kS/s sampling• Up to 4 analog outputs• 8 digital I/O, expandable to 24• Two counters• Regulated power supply
included

Supported Operating Systems
The USB-2416 Series offers high-resolution voltage or thermocouple measurements along withdigital I/O. Analog output functionality is available with the USB-2416-4AO.

• Windows® 11/10/8/7/Vista®/
XP 32/64-bit• Linux®

Overview
The USB-2416 Series offers exceptional performance and accuracy for voltage andtemperature measurements.
Designed for the USB bus, each device provides up to 32 analog input channels
with 24-bit resolution, 8 digital I/O and two counter inputs. The USB-2416-4AO
also features four analog outputs.
Connect to the AI-EXP32 expansion device for an additional 32 channels of analog
input and 16 digital I/O lines.
Analog inputs are user-configurable for voltage or thermocouple input on a perchannel basis.

Analog Input
Each device provides 32 SE/16 DIFF analog inputs, expandable to 64 SE/32 DIFF.
Software-selectable voltage input ranges
are configurable per-channel.
USB-2416 Series devices can sample analog input channels at up to 1 kS/s. Openthermocouple detection is automaticallyenabled for thermocouple measurements.

The USB-2416-4AO provides four 16-bit
analog outputs with a ±10 V output
range. The analog outputs can be updated
at a maximum rate of 1 kS/s (systemdependent).

USB-2416 Series Selection Chart
AnalogInputsThroughput
Rate

AnalogOutputs

Digital I/OCounters

USB-2416

32 SE/16 DIFF

Up to 1 kS/s—82USB-2416-4AO

32 SE/16 DIFF

Up to 1 kS/s

482USB-2416
with AI-EXP32

64 SE/32 DIFF

Up to 1 kS/s

—242USB-2416-4AO
with AI-EXP3264 SE/32 DIFF

Up to 1 kS/s

4242(508) 946-5100

1USB-2416 Series devices provide eight
digital I/O lines with read/write rates of500 port or single bit reads per second.
Each DIO channel is an open-drain. Digital
outputs can sink up to 150 mA for directdrive applications. The maximum sinkcurrent is 150 mA per eight-channel bank,or if all eight channels are used, 18 mA(maximum) per channel.

Counter Input

Analog Output(USB-2416-4AO Only)

Model

Measurement Computing

Digital I/O

Each device has two 32-bit event countersthat accept frequency inputs up to 1 MHz.
The internal counter increments when theTTL levels transition from low to high.

Channel Expansion with
the AI-EXP32
The AI-EXP32 expansion device provides
an additional 32 SE/16 DIFF analog inputs
and 16 DIO lines. The AI-EXP32 supports
all analog/thermocouple input and digital
I/O features of the USB-2416 Series devices
to which it is connected.
The USB-2416 Series docks directly to theAI-EXP32 with an expansion connector oneach device (see page 5). No additional
cable is required. Refer to the hardware
user’s guide for detailed information.
The AI-EXP32 receives power from theconnected USB-2416 Series device.

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USB-2416 Series
Features
Calibration

Power

The USB-2416 Series is factory-calibrated using a NIST-traceablecalibration process. Specifications are guaranteed for one year.

The USB-2416 Series receives power from the PS-5V2AEPS external supply that ships with the device.

The USB-2416 Series also supports field calibration for users tocalibrate the device locally with the InstaCal utility.

USB-2416 Series Block Diagram

Voltagecircuit

Mux

ADC

Input
Multiplexers

PGATC

input
circuitScrew terminals

DGND+2.5 VGND

DIO

8Digital
isolator

Isolated
microcontroller
QuadDACNon-isolated
micocontrollerUSB

4USB-2416-4AO only

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USB-2416 Series
Software
Software Support
USB-2416 Series devices are supported by the software in the table below.
Ready-to-Run Applications

DAQami™

Data acquisition companion software with drag-and-drop interface that is used to acquire,view, and log data, and generate signals. DAQami can be configured to log analog, digital, andcounter channels, and to view that data in real-time or post-acquisition on user-configurable
displays. Logged data can be exported for use in Excel® or MATLAB®. Windows OS
DAQami is included with the free MCC DAQ Software bundle.

InstaCal™

TracerDAQ™ andTracerDAQ Pro

An interactive installation, configuration, and test utility for MCC hardware. Windows OS
InstaCal is included with the free MCC DAQ Software bundle.

Virtual strip chart, oscilloscope, function generator, and rate generator applications used togenerate, acquire, analyze, display, and export data. Supported features may vary by hardware.
The Pro version provides enhanced features. Windows OS
TracerDAQ is included with the free MCC DAQ Software bundle.
TracerDAQ Pro is available as a purchased software download.

General-Purpose Programming Support

Universal Library™
(UL) for Windows

Library for developing applications in C, C++, VB, C# .Net, VB .Net, and Python on Windows.
The UL for Windows is included with the free MCC DAQ Software bundle.
The UL Python API for Windows is available on GitHub (github.com/mccdaq/mcculw).

Library for developing applications in C, C++, and Python on Linux.
UL for Linux®

UL for Linux is available on GitHub (github.com/mccdaq/uldaq).
Open-source, third-party Linux drivers are also available for supported MCC devices.

Application-Specific Programming Support

ULx forNI LabVIEW™

DASYLab®

Measurement Computing

A comprehensive library of VIs and example programs for NI LabVIEW that is used to develop
custom applications that interact with most MCC devices. Windows OS
ULx for NI LabVIEW is included with the free MCC DAQ Software bundle.

Icon-based data acquisition, graphics, control, and analysis software that allows users to create
complex applications in minimal time without text-based programming. Windows OS
DASYLab is available as a purchased software download. An evaluation version is available for28 days.

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USB-2416 SeriesSpecifications
Analog Voltage Output (USB-2416-4AO only)

All specifications are subject to change without notice.
Typical for 25 °C unless otherwise specified.
All specifications apply to all temperature and voltage input channels unlessotherwise specified.

Leave unused VDACx channels disconnected. The output voltage defaults to 0 V
when the host PC is reset, shut down or suspended. The duration of the output
transient depends on the enumeration process of the host PC. Typically, the outputof the USB-2416-4AO is stable after two seconds.
Digital to analog converter: DAC8555
Number of channels: 4, 16-bit
Output ranges
Calibrated: ±10 V
Uncalibrated: ±10.05 V, software configurable
Output transient: Host PC is reset, powered on, suspended or a reset commandis issued to device		Duration: 2 s		Amplitude: 2 V p-p
Initial power on		Duration: 50 ms		Amplitude: 5 V peak
Differential non-linearity: ±25 LSB, typ, ±1 LSB max
Output current: VDACx pins, ±3.5 mA max
Output short-circuit protection: VDACx connected to AGND, unlimited duration
Output coupling: DCVDACx readback: Each output independently measured by the A/D converter,
Power on and reset state: DACs cleared to zero-scale, 0 V, ±50 mV
Output noise: 30 µVrms
Settling time: To rated accuracy, 10 V step, 45 µs
Slew rate: 1.0 V/µs
Throughput
Single-channel: 1000 S/s max, system-dependent
Multi-channel: 1000 S/s /#ch max, system-dependent
Calibrated absolute accuracy
Range: ±10 V
Accuracy (±LSB): 16.0
Calibrated absolute accuracy components
Range: ±10 v% of reading: ±0.0183
Offset (±mV): 1.831
Temp drift (%/°C): 0.00055
Absolute accuracy at FS (±mV): 3.661
Relative accuracy
Range: ±10 V
Relative accuracy (±LSB): 4.0 typical

Analog Input

A/D converter type: ADS1256, 24-bit Sigma Delta
A/D data rates: 3750 samples per second (S/s), 2000 S/s, 1000 S/s, 500 S/s, 100S/s, 60 S/s, 50 S/s, 25 S/s, 10 S/s, 5 S/s, 2.5 S/sThroughput
Single channel: 2.5 Hz to 1102.94 Hz, software-selectable
Multiple channels: 0.16 Hz to 1102.94 Hz, software-selectable
Number of channels: Up to 32 channels individually software configurable assingle-ended or differential; thermocouples require differential mode
Input isolation: 500 VDC min between field wiring and USB interface
Channel configurations: Temperature sensor input, software programmable tomatch sensor type; voltage input
Input voltage range
Thermocouple mode: ±0.078125 VVoltage mode: ±20 V, ±10 V, ±5 V, ±2.5 V, ±1.25 V, ±0.625 V, ±0.3125 V,±0.15625 V, ±0.078125 V, software configurable
Absolute maximum input voltage: CxH-CxL relative to GND, ±30 V max (poweron), ±10 V max (power off)
Input impedance: 2 GΩ (power on), 390 Ω (power off)
Input leakage current: ±10.6 nA
Input capacitance: 590 pfMaximum working voltage (signal+common mode):
Voltage mode (±20 V): ±20.01 V max
Voltage mode (all other voltage ranges): ±10.25 V max
Common mode rejection ratio
Thermocouple mode (fIN = 60 Hz): 110 dB
Voltage mode (fIN = 60 Hz, all input ranges): 90 dB
ADC resolution: 24 bits
Crosstalk: Adjacent channels,100 dB
Input Coupling: DCChannel gain queue: Up to 64 elements, software configurable channel and range
Warm-up time: 45 minutes min
Open thermocouple detect: Enabled when configured for a thermocouple sensor
CJC sensor accuracy: 15 °C to 35 °C, ±0.15 °C typ; 0 °C to 55 °C, ±0.5 °C max

Channel Configurations
ChannelCategory

Configuration

CxH/CxL

Thermocouple

16 differential

CxH/CxL

VoltageUp to 32, individually configurable as either
single ended or differential

Digital Input

Number of I/O: 8Configuration: independently read from (DIN) or written to (DOUT)
Input voltage range: 0 V to 15 V
Input type: CMOS (Schmitt trigger)
Input characteristics: 47 kW pull-up/pull-down resistor, 28 kW series resistor
Maximum input voltage range: 0 V to 20 V max (power on/off, relative to DGND)
Pull-up/pull-down configuration: All pins pulled up to +5 V via individual 47 kΩresistors; pull-down is available with an onboard jumper.
Transfer rate (software paced): 500 port reads or single bit reads per second typical.
Input high voltage: 1.3 V min, 2.2 V max
Input low voltage: 1.5 V max, 0.6 V min
Schmitt trigger hysteresis: 0.4 V min, 1.2 V max

Compatible Sensors
Thermocouple Sensor Types
J: –210 °C to 1200 °C

T: –270 °C to 400 °CK: –270 °C to 1372 °C

N: –270 °C to 1300 °C

R: –50 °C to 1768 °C

E: –270 °C to 1000 °C

S: –50 °C to 1768 °C

B: 0 °C to 1820 °C

Digital Output

Number of I/O: 8Configuration: independently read from (DIN) or written to (DOUT)
Output characteristics: 47 kΩ pull-up, open drain (DMOS transistor)
Pull-up configuration: All pins pulled up to +5 V via individual 47 kΩ resistors.
Transfer rate (software paced)
Digital output: 500 port writes or single bit writes per second typical.
Output voltage range: 0 V to 5 V (no external pull up resistor, internal 47 kΩpull-up resistors connected to 5 V by default); 0 V to 15 V max
Drain to source breakdown voltage: 50 V min
Off state leakage current: 0.1 µA
Sink current capability: 150 mA max (continuous) per output pin, 150 mA max(continuous) for all eight channels
DMOS transistor on-resistance (drain to source): 4 Ω

Accuracy

Refer to the user’s guide for thermocouple and voltage measurement accuracy tables.

Throughput Rate

The maximum throughput is 1.1 kS/s aggregate. Users can set conversion rates
on a per-channel basis. Refer to the hardware user’s guide for single- and multichannel throughput rates.

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USB-2416 Series
Ordering
Counter Input

MechanicalPin name: CTR0, CTR1
Number of channels: 2
Resolution: 32-bits
Counter type: Event counter
Input type: Schmitt trigger, rising edge triggered
Counter read/writes rates: System dependent, 500 reads per second
Input characteristics: Each CTRx input pin, 562 kΩ to +5 V, 10 kΩ series resistor
Input voltage range: ±15 V max
Maximum input voltage range: CTR0,CTR1 relative to GND and DGND,±20 V max (power on/off)
Input high voltage: 1.3 V min, 2.2 V max
Input low voltage: 1.5 V max, 0.6 V min
Schmitt trigger hysteresis: 0.4 V min, 1.2 V max
Input bandwidth (–3 dB): 1 MHz
Input capacitance: 25 pf
Input leakage current: ±120 nA
Input frequency: 1 MHz, max
High pulse width: 500 ns, min
Low pulse width: 500 ns, min

Dimensions (L × W × H): 245 × 146 × 50 mm (9.65 × 5.75 × 1.97 in.)
User connection length: 5 m (16.40 ft) max

Environmental

Operating temperature range: 0 °C to 50 °C max
Storage temperature range: –40 to 85 °C max
Humidity: 0 to 90% non-condensing max
These specifications do not apply to the AC power adapter.

Power

Supply current: Quiescent current, 340 mA
Voltage supervisor limits: 4.5 V > Vext or Vext > 5.5 V PWR LED = Off, (powerfault); 4.5 V < Vext < 5.5 V, PWR LED = On+5 V user output voltage range: 4.9 V min to 5.1 V max
User +5V user output current: Available at terminal block pin 35, 10 mA max
Isolation: Measurement system to PC, 500 VDC min
AC power adapter: MCC p/n PS-5V2AEPS; included with hardware
External power input: +5 VDC, 2.4 A, 12 Watt, 5% regulation

Order Information

Accessories

HardwarePart No.

Description

USB-2416

24-bit, isolated, high-channel-count USB DAQ device.
Includes USB cable and power adapter.

USB-2416-4AO

24-bit, isolated, high-channel-count, USB DAQ device
with 4 analog outputs. Includes USB cable and poweradapter.

AI-EXP32

Analog input expansion module for USB-2416 Series

USB-2416-Series.indd(508) 946-5100

Description

ACC-202

DIN-rail kit.

ACC-216

Connector kit with 6 detachable screw terminals.

PS-5V2AEPS

Replacement power supply, 12-watt. Interchangeable
plugs are available separately.

745690-E001

E-type thermocouples wire, fiberglass (0 °C to 482 °C,
32 °F to 900 °F), 1 m

745690-E002

E-type thermocouples wire, fiberglass (0 °C to 482 °C,
32 °F to 900 °F), 2 m

745690-J001

J-type thermocouples wire, fiberglass (0 °C to 482 °C,
32 °F to 900 °F), 1 m

745690-J002

J-type thermocouples wire, fiberglass (0 °C to 482 °C,
32 °F to 900 °F), 2 m

745690-K001

K-type thermocouples wire, fiberglass (0 °C to 482 °C,
32 °F to 900 °F), 1 m

745690-K002

K-type thermocouples wire, fiberglass (0 °C to 482 °C,
32 °F to 900 °F), 2 m

745690-T001

T-type thermocouples wire, fiberglass (0 °C to 482 °C,
32 °F to 900 °F), 1 m

745690-T002

T-type thermocouples wire, fiberglass (0 °C to 482 °C,
32 °F to 900 °F), 2 m

Software also Available from MCC

The USB-2416 Series docked to the AI-EXP32

Measurement Computing

Part No.

5Part No.

Description

TracerDAQ Pro

Out-of-the-box virtual instrument suite with strip chart,
oscilloscope, function generator, and rate generator –professional version

DASYLabIcon-based data acquisition, graphics, control, and analysis
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September 2019. Rev 9© Measurement Computing Corporation