USB-2600 Series
16-Bit, 1 MS/s, High-Speed Data Acquisition
Features• 16-bit resolution• 1 MS/s sample rate
• Up to 64 single-ended analoginputs• Up to four 16-bit, 1 MS/sanalog ­outputs• 24 digital I/O lines• Four 32-bit event counters• Four timer outputs• USB powered (no externalpower required)• Includes USB cable andstandoffs• Small footprint for OEM andembedded ­applications

USB-2600 Series boards are designed for OEM and embedded applications.

Supported Operating Systems• Windows® 11/10/8/7/Vista®

Overview

XP, 32/64-bit

The USB-2600 Series offers high-speed, multifunction data acquisition in a low-cost,board-only design. Each board offers voltage input, digital trigger input, counterinput, timer output, digital I/O, and clock input.

• Linux®
• Android™

Analog output is also available on the USB-2627 and USB-2637.

Analog Input

Digital I/O

Counter Input

Each USB-2600 Series board has a16-bit, 1 MS/s ADC coupled with
16 SE analog inputs (USB-2623 andUSB-2627), 64 SE analog inputs(USB-2633 and USB-2637). The input
range is fixed at ±10 V.

The 24 TTL-level digital I/O lines aresoftware selectable for input or output.
The typical maximum transfer rate (system paced, asynchronous) is 4,000 8-bit
port or single-bit reads/writes per second.

Four 32-bit counters are included inUSB-2600 Series devices. Each counter
accepts frequency inputs up to 20 MHz.

Analog Output(USB-2627/USB-2637)

Pull-Up/Down Configuration
Each board has an onboard jumper for
configuring the digital I/O lines for pullup or pull-down (default).

Four pulse width modulation (PWM)
timer outputs can generate a square wave
with a programmable frequency in therange of 0.015 Hz to 32 MHz.

The four 16-bit, 1 MS/s analog output
channels have an output range of ±10 V.
The maximum rate at which analog outputs update depends on several factors,
including the speed of the USB port. Typically, with the A/D operating at the full
1 MS/s rate, each analog output updates
continuously from computer memory at
1 MS/s regardless of the number of channels in a scan.

Measurement ComputingTimer Output

External Clock I/OTrigger Input

One external clock input is provided forpacing analog inputs. The USB-2627 andUSB-2637 also have an external clock
input for pacing analog outputs.

An external digital trigger input issoftware selectable for edge sensitive orlevel sensitive mode.

USB-2600 Series Selection Chart
ModelAnalog
InputsSampleRate

AnalogOutputs

Digital I/O

Counters

TimerOutputs

USB-2623

16 SE (16-bit)

1 MS/s max

02444

USB-2627

16 SE (16-bit)

1 MS/s max

42444

USB-2633

64 SE (16-bit)

1 MS/s max

02444USB-2637

64 SE (16-bit)

1 MS/s max

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USB-2600 SeriesFeatures
Calibration

TB-103 Screw Terminal Board
The optional TB-103 screw terminal board connects directly to
the 40-pin headers on a USB-2600 Series board, and secures tothe board with the included stand-offs. The TB-103 provides
access for up to 64 SE analog inputs (when using a USB-2633
or USB-2637), up to 4 analog outputs (when using a USB-2627
or USB-2637), 24 digital I/O and all counters/timers.

The USB-2600 Series is factory-calibrated using a NIST-traceablecalibration process. Specifications are guaranteed for one year.
The USB-2600 Series also supports field calibration for users tocalibrate the device locally with the InstaCal utility.

Signal Connections
All signals are available from the 68-pin SCSI connectors or thefour header connectors. The headers also provide two additional
timer outputs, and an additional 48 SE analog inputs on theUSB-2633 and USB-2637. Use a C40FF-x or custom cable forheader connections.

TB-100 Screw Terminal Board
The optional TB-100 screw terminal board connects directly tothe SCSI connector using a CA-68-xx ribbon cable. The TB-100
provides access to 16 SE analog ­inputs, up to four analog outputs,
24 digital I/O, and all counters/timers. When using the TB-100
with the USB-2633 and USB-2637, access to the remaining 48 SE
analog inputs is available through the 40-pin header connectors.

USB-2637 connected to TB-103 screw-­terminal board.

USB-2600 Series Block Diagram
Calibration
Calibration
Voltage
VoltageSources
Sources

16or64USB-2623/USB-2627: 16 SE AI
USB-2633/USB-2637: 64 SE AI

Multiplexer
Multiplexer

In-Amp
In-Amp68-pin SCSI connector, 40-pin header connectors (4)

(SE)

±10 V

Level
LevelShift/
Shift/
Attenuate
Attenuate

16-bit ADC
1 MSPSAmp

16-bit16-bitDACDAC
XDAC0
XDAC0Registers

Amp

16-bit DAC
XDAC1Registers

16-bit DAC
XDAC2Registers

EEPROM
EEPROM

Clock output

8-bit Data bus
±10 V

±10 V

Amp

16-bit FIFO bus

Microcontroller
with USB 2.0
High-speed
Interface

D+/D– USB
USB
Port
Port
Vbus
(5V)

FPGA
±10 V

16-bit16-bitDACDAC
XDAC3
XDAC3Amp

Registers
Registers

SRAM
SRAM

USB-2627/USB-2637 Only
PowerControl

Power out+VO–12V–12V5V
5V
3.3V
3.3V

External output scan clock (XDPCR)

24

DIO
DIO
Protection
Protection

Counter input (CNT0 to CNT3)

4Timer output (TMR0 to TMR3)

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Bitwise-programmable
Bitwise-programmable
DIO
DIOwith
with
Configurable
Configurable
Pull-ups
Pull-ups2

3.3V
Always On+12V+12V

External trigger input (TTLTRG)
External input scan clock (XAPCR)

Measurement Computing

CrystalCrystal
24
24MHz
MHz

24

Power
PowerSupplies
Supplies
withwithShutdown
Shutdown
andandSoft-startSoft-start

1.2V
1.2V

Temperature
Temperature
SensorSensor

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USB-2600 Series
Software
Software Support
USB-2600 Series devices are supported by the software in the table below.
Ready-to-Run Applications
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 OSDAQami™

DAQami is included with the free MCC DAQ Software bundle.

An interactive installation, configuration, and test utility for MCC hardware. Windows OS

InstaCal™

InstaCal is included with the free MCC DAQ Software bundle.

TracerDAQ™ andTracerDAQ Pro

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.

UL for Android™

Library of Java classes for programmers who develop apps for Android-based mobile devices.
UL for Android communicates with select MCC DAQ devices. Supports Android project development on Windows, Linux, Mac OS X.
UL for Android is included with the free MCC DAQ Software bundle.

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-2600 SeriesSpecifications
Specifications

Analog Output (USB-2627/USB-2637 Only)

Number of channels: 4; leave unused analog output channels disconnected.
Resolution: 16 bits
Output ranges (calibrated): ±10 V
Output transient
Host computer is reset, powered on, suspended, or a reset command isissued to the device (analog outputs default to 0 V)		Duration: 100 ms		Amplitude: 2 V p-p
Powered Off		Duration: 100 ms		Amplitude: 5 V peak
Differential nonlinearity: ±0.25 LSB typ, ±1 LSB max
Output Current
XDACx pins: ±3.5 mA max
Output short-circuit protection
XDACx connected to AGND: Unlimited duration
Output coupling: DC
Power on and reset state
DACs cleared to zero-scale: 0 V, ±150 mV
Pacer source: Internal output scan clock and external output scan clock (XDPCR),
independent of external input scan clock (XAPCR)
Trigger sources: TTLTRIG (refer to the “External Trigger” specifications below)
Output update rate: 1 MS/s max; not affected by the number of scan channels
Settling time to rated accuracy, 10 V step: 2 µs
Slew rate: 20 V/µs
Throughput
Software paced: 33 S/s to 4,000 S/s typ, system-dependent
Hardware paced: 1 MS/s max, system-dependent

All specifications are subject to change without notice.
Typical for 25 °C unless otherwise specified.

Analog Input

A/D converter (ADC) type: Successive approximation; 16-bit resolution
Number of channels
USB-2623/USB-2627: 16 SE
USB-2633/USB-2637: 64 SE
Input voltage range: ±10 V
Absolute maximum input voltage
CHx relative to AGND: ±25 V max (power on), ±10.5 V max (power off)
Input impedance: 1 GΩ (power on), 390 Ω (power off)
Input bias current: ±100 pA
Input bandwidth: Small signal (–3 dB): 3.1 MHz
Input capacitance: 40 pf
Maximum working voltage: ±10.1 V max relative to AGND
Crosstalk
Adjacent channels, DC to 10 kHz: –80 dB
Input coupling: DCSample rate: 0.0149 S/s to 1,000 kS/s; software selectable
Trigger source: TTLTRG
A/D pacing: Internal input scan clock, external input scan clock (XAPCR)
Burst mode: Burst rate = 1 µs, software selectable,Throughput
Software paced: 33 S/s to 4,000 S/s typ; system dependent
Hardware paced: 1 MS/s max
Channel queueUSB-2623/USB-2627: Up to 16 element list of random channels
USB-2633/USB-2637: Up to 64 element list of random channels
Warm-Up Time: 15 minutes min

Calibrated Absolute Accuracy

Range: ±10 V% of reading: ±0.0183
Offset: ±1.831
Offset Tempco: 12.7 µV/°C)
Gain Tempco: 13 ppm of range/°C)

Accuracy
Analog Input DC Voltage Measurement Accuracy
Range: ±10 V
Gain error (% of reading): 0.031
Offset error: 915 µV
INL error (% of Range): 0.0076
Absolute accuracy at full scale: 4775 µV
Gain temperature coefficient (% reading/°C): 0.0013
Offset temperature coefficient (µV/°C): 35

Relative Accuracy (±LSB)

Range: ±10 V
Relative Accuracy (INL): 4.0 typ

Digital Input/Output

Digital type: TTL
Number of I/O: 24
Configuration: Three banks of 8. Bit-configurable as input or output.
Pull-up configuration: Each port has jumper- configurable 47 kΩ resistors.
Digital I/O transfer rate (system paced, asynchronous): 33 to 4,000 port reads/
writes or single bit reads/writes per second typ; system dependent.
Input high voltage: 2.0 V min, 5.0 V absolute max
Input low voltage: 0.8 V max, 0 V recommended min
Output high voltage: 4.4 V min (IOH = –50 µA),
3.76 V min (IOH = –24 mA)
Output low voltage: 0.1 V max (IOL = 50 µA)
0.44 V max (IOL = 24 mA)
Output current: 60 mA max, not to exceed 24 mA for one bit, resulting in 2.5 mA
max when all 24 bits are enabled.

Noise Performance

For peak-to-peak noise distribution test, the input channel connects to AGND at theinput terminal block, and 32,000 samples are acquired at the maximum throughput.
Range: ±10 V
Counts: 8LSBrms: 1.21

Settling Time for Multichannel Measurements
Range: ±10 V
1 µS settling accuracy (% FSR): 0.0152
5 µS settling accuracy (% FSR): 0.0061
10 µS settling accuracy (% FSR): 0.0015

Analog Input/Output Calibration

External Trigger

Recommended warm-up time: 15 minutes min
Calibration method: Self-calibration (firmware)
Calibration interval: 1 year (factory calibration)
AI calibration reference: 5 V, ±2.5 mV max. Measured values stored in EEPROM.
Tempco: 5 ppm/°C max
Long term stability: 15 ppm/1,000 hours
AO calibration procedure (USB-2627/USB-2637 only): Analog output pinsinternally routed to the analog input circuit. For best results, disconnect any
XDACx connections at the I/O connectors before performing AOUT calibration.

Trigger source: TTLTRG
Trigger mode: edge or level sensitive, rising or falling edge, high or low level
Trigger latency: 1 µs + 1 clock cycle max
Trigger pulse width: 100 ns min
Input type: 33 Ω series resistor and 49.9 kΩ pull-down to GND
Input high voltage: 2.2 V min, 5.5 V absolute max
Input low voltage: 1.5 V max, –0.5 V absolute min, 0 V recommended minExternal Clock

Terminal names: XAPCR, XDPCR
Terminal types: Input, active on rising edge
Terminal descriptions: Receives pacer clock from external source
Input clock rate: 1 MHz max
Clock pulse width: 100 ns min
Input type: 33 Ω series resistor, 47 kΩ pull-down to GND
Input high voltage: 2.2 V min, 5.5 V absolute max
Input low voltage: 1.5 V max, –0.5 V absolute min, 0 V recommended min

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USB-2600 Series
Ordering
Counter

Mechanical

Number of channels: 4 channels
Resolution: 32-bit
Counter type: Event counter
Input type: 33 Ω series resistor, 47 kΩ pull-down to GNDCounter read/writes rates (software paced): 33 to 8,000 reads/writes per second
Input voltage: 2.2 V min high, 1.5 V max low
Input low voltage: maximum input voltage range: –5 V to +10 V max
Input frequency: 20 MHz max
High/low pulse width: 25 ns min

PCB dimensions (L × W): 152.4 × 150.62 mm (6.00 × 5.93 in.)Timer Output

Number of channels: 4 channels
Timer type: PWM output with count, period, delay, and pulse width registers
Output value: Idle low with pulses high, software selectable, output invert
Internal clock frequency: 64 MHz
Register widths: 32-bit
High pulse width : 10.42 ns, min
Low pulse width: 10.42 ns, min
Output high voltage: 4.4 V min (IOH = –50 µA)
3.76 V min (IOH = –1.0 mA)
Output low voltage: 0.1 V max (IOL = 50 µA), 0.44 V max (IOL = 1.0 mA)
Output waveform: Square wave
Output rate: 64 MHz base rate divided by 232; software selectable.

Power

Supply current: Quiescent current: 360 mA; includes up to 10 mA for the LED;
does not include potential loading of the DIO bits, +VO pin, or XDACx outputs.
+VO output voltage range: 4.25 V to 5.25 V+VO output current: 10 mA max

Environmental

Operating temperature range: 0 °C to 55 °C max
Storage temperature range: –40 °C to 85 °C max
Humidity: 0% to 90% non-condensing max

Order Information

Accessories & Cables

HardwarePart No.

Description

TB-100Termination board with screw-terminals; connects via
a CA-68-3R, CA-68-3S, or CA-68-6S cable

Part No.

Description

USB-2623

USB-based DAQ device with 16 SE analog inputs,
1 MS/s throughput; 24 digital I/O lines; four 32-bitcounter input channels; and four timer outputs.

TB-103

Termination board with screw terminals; mates
directly with the USB-2600 Series; includes mounting
stand-offs

USB-2627

USB-based DAQ device with 16 SE analog inputs,
1 MS/s throughput, 4 analog outputs, 24 digital I/Olines, four 32-bit counter input channels, and fourtimer outputs.

CIO-MINI40

40-pin universal screw-terminal board

CA-68-3R68-conductor ribbon cable, 3 ft.

C40FF-x40-conductor ribbon cable, female to female, availablein 2 ft. to 50 ft.

USB-2633

USB-based DAQ device with 64 SE analog inputs,
1 MS/s throughput; 24 digital I/O lines; four 32-bitcounter input channels; and four timer outputs.

USB-2637

USB-based DAQ device with 64 SE analog inputs, 1MS/s throughput, 4 analog outputs, 24 digital I/Olines, four 32-bit counter input channels, and fourtimer outputs.

Software also Available from MCC
Part 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
softwareTB-103 termination board mounts directly onto a USB-2600 Seriesboard

The TB-100 termination board connects to a USB-2600 Series board
with a ribbon cable
Measurement Computing
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January 2019. Rev 8© Measurement Computing Corporation