USB Digital I/O
USB-DIO24, -1024, and -DIO96H Series
Features• 24 digital I/O (USB-DIO24
Series and USB-1024 Series) or
96 digital I/O(USB-DIO96H Series)• High current output available• Event counter available
USB-DIO24 Series boards (left) provide 24 DIO. The USB-1024 Series (middle) provide thesame functionality as the USB-DIO24 Series and are shipped in a case. USB-DIO96H Series(right) provide 96 DIO, high-drive current output and are shipped in a metal enclosure.

Overview• Available as board-only(USB‑DIO24 Series), enclosed ina housing (USB-DIO96H Series),
or cased (USB-1024 Series)

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

The USB-DIO24, -1024, and -DIO96H Series are digital I/O data acquisition devices.

XP, 32/64-bit

The USB-1024 Series adds 24 lines of logic-level digital I/O to any USB port. The
USB-1024HLS high output current can drive many logic level devices directly,
eliminating the need for costly buffer circuitry.

• Linux®

The USB-DIO24 Series has all the functionality of the USB-1024 Series, but isenclosed in a case and designed with a D connector that matches the PCI-DIO24,
making it easy to replace PCI boards in your applications.

USB-DIO96H Series

The USB-DIO96H Series provides 96 lines of high-current, logic-level, bidirectional
digital I/O. The units offer 4 independent 24-bit DIO groups, each divided into
two 8-bit ports and two 4-bit ports. The outputs can drive a wide assortment of
external devices directly, without additional buffering. USB-DIO96H Series arehoused in a heavy-duty chassis with integrated mounting slots.

Digital I/O
USB-DIO24 Series and USB-1024 Series
USB-DIO24 and USB-1024 Series provide
24 DIO channels configured as either twobanks of eight ports and two banks offour ports, or three banks of eight ports.
Each port is independently configurable
for input or output.
The USB-DIO24/37 and USB-1024LS are
designed with an 82C55 interface chip.

The USB-DIO24H/37 and USB-1024HLS
are designed to emulate 82C55 mode 0.
Outputs are high-drive TTL that can source
15 mA and sink 64 mA.
Digital I/O lines are accessed througha 37-pin D-type connector on the
USB-DIO24 Series, and through screw
terminals on the USB-1024 Series. USBDIO24 Series are board-only, while theUSB-1024 Series are shipped in a case.

The USB-DIO96H Series provides 96 DIO
channels that are configured as eightbanks of eight ports and eight banks offour ports. Each port is independently
configurable for input or output. USBDIO96H Series devices are designed toemulate 82C55 mode 0. Digital outputs
are high-drive TTL that can source 24
mA/sink 64 mA.
Digital I/O lines are accessed through thescrew terminals on the USB-DIO96H, andthrough the header connectors on the
USB-DIO96H/50. USB-DIO96H Seriesboards are shipped in a rugged metal
enclosure that you can mount on a DIN
rail or bench.

USB-DIO24 Series, USB-1024 Series, and USB-DIO96H Series Selection Chart
Digital Type

Sink
(per output)

Source(per output)

Max Input Voltage

Signal I/O

USB-DIO24/37

82C55

2.5 mA

2.5 mA

5.5 V

37-pin D-type

USB-DIO24H/37

Output: 74FCT244
Input: 74ACT373

64 mA

15 mA

5.5 V

37-pin D-type

Model

USB-1024LS

82C55

2.5 mA

2.5 mA

5.5 V

40-pin screw terminals

USB-1024HLS

Output: 74FCT244
Input: 74ACT373

64 mA

15 mA

5.5 V

40-pin screw terminals

USB-DIO96H

Output: 74ABT244A
Input: 74ACT373

64 mA

24 mA

5.5 V

96-pin screw terminals
Four 50-pin IDC-type headers

USB-DIO96H/50

Output: 74ABT244A
Input: 74ACT373

64 mA

24 mA

5.5 V

Two 50-pin IDC-type headers

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USB Digital I/O
Features
USB-DIO24 Series and USB-1024 Series Block Diagram

PORT A (7:0)

82C55 (USB-DIO24/37)
PORT A

PORT B (7:0)
PORT CH (3:0)
PORT CL (3:0)

PORT BPORT CH

Control

Screw terminal I/O Connector

High-drive 82C55 Emulation (USB-DIO24H/37)

8USB
Microcontroller

132-bitEvent Counter

500 mAUSB 2.0

PORT CL

USB-DIO96H Series Block Diagram
HIGH DRIVE
FOURTHPORT
884
45V nominal
External
Power

FOURTHPORTA
FOURTHPORTB
24

FOURTHPORTCH
FOURTHPORTCL

Power
MonitorHIGH DRIVE
THIRDPORT
88
4

Signal I/O

4

THIRDPORTA

Power
Switch

THIRDPORTB
24

THIRDPORTCH
THIRDPORTCLHIGH DRIVESECONDPORT
8
8
4
4

96

Logic
Controller(CPLD)

84
4

500 mAUSB 2.0
compliantinterface

SECONDPORTASECONDPORTB
24

SECONDPORTCH
SECONDPORTCL

32-bitevent counter1 channel

HIGH DRIVE
FIRSTPORT
88USB
Microcontroller

FIRSTPORTAFIRSTPORTB

1

24

FIRSTPORTCH
FIRSTPORTCLCounter Input

Power

The USB-DIO24 Series, USB-1024 Series, and USB-DIO96H provide a 32-bit event counter to count TTL pulses. The counter
accepts inputs up to 1 MHz.

Power to the USB-DIO24 Series and USB-1024 Series is suppliedby the +5 volt USB supply from your computer. No external
power is required.
Power to the USB-DIO96H Series is provided by an external+5 volt regulated power supply. An onboard Molex connector
is available to connect an alternate user-supplied power supply.

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USB Digital I/O
Software
Software Support
USB-DIO24, -1024, and -DIO96H 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.

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.

Application-Specific Programming Support

ULx forNI LabVIEW™

DASYLab®

MATLAB Driver®

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.
High-level language and interactive environment for numerical computation,
visualization, and programming. The Mathworks Data Acquisition Toolbox™ allows users toacquire data from most MCC PCI and USB devices.
Visit www.MathWorks.com for more information about the Data Acquisition Toolbox.

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USB Digital I/OSpecifications
Signal Conditioning Accessories

Specifications: USB-DIO24/37 andUSB-DIO24H/37

For digital signal conditioning, connect to Measurement Computing relay mounting and interface boards:

Digital Input/Output

CIO-ERB08 and CIO-SERB08

The CIO-ERB48 is a relay accessory board that includes 48 Form
C relays. The CIO-SERB48 provides similar functionality withsocketed relays Both accessory boards have a 50-pin header
connector for interfacing with the USB-DIO96H/50.

Digital typeUSB-DIO24: 82C55
USB-DIO24H/37
		Input: 74ACT373
		Output: 74FCT244
Number of I/O: 24 (Port A Bit 0 through Port C Bit7)
Configuration: 2 banks of 8 and 2 banks of 4, or 3 banks of 8
Pull-up/down configuration: all pins pulled up to 5V via 47 kΩ resistors (default).
Selection available for pull down to ground. Hardware selectable via 0 Ω resistor.
Input high voltage: 2.0 V min, 5.5 V absolute max
Input low voltage: 0.8 V max, –0.5 V absolute min
Output high voltage
USB-DIO24/37 (IOH = –2.5 mA): 3.0 V min
USB-DIO24H/37 (IOH = –15 mA): 2.4 V min
Output low voltage
USB-DIO24/37 (IOH = –2.5 mA): 0.4 V max
USB-DIO24H/37 (IOH = 64 mA): 0.55 V max
Source current (USB-DIO24H/37)
Self-powered hub or externally powered root port hub: 15 mA per output,
max. Bus-powered or battery-powered root port hubs are not supported.
Sink current (USB-DIO24H/37):
365 mA/(number of outputs), max. 64 mA max sink current for any single
output. A low-side resettable fuse protects the USB-DIO24H/37. This is designed
to protect the host PC or hub from an over current condition. Assuming all
return currents in sinking applications return via the USB cable ground signal,
the maximum allowable return current is 500 mA. Include the USB-DIO24H/37
unloaded operating current (135 mA) in your power budget.
Power up / reset state: Input mode•

Counter

The CIO-ERB08 is a relay accessory board that includes 8 Form
C relays. The CIO-SERB08 provides similar functionality withsocketed relays. Both accessory boards have two 37-pin connectors for interfacing with USB-DIO24 Series hardware.
•

Connect to the USB-DIO24 Series with a C37FF-x cable.

CIO-ERB24 and CIO-SERB24/FD

The CIO-ERB24 is a relay accessory board that includes 24 Form
C relays. The CIO-SERB24/FD provides similar functionality withsocketed relays and fault detection. Both accessory boards havea 37-pin D-type connector and a 50-pin header connector forinterfacing with USB-DIO24 Series and USB-DIO96H/50 devices.
•

Connect to the USB-DIO24 Series with a C37FF-x cable.

•

Connect to the USB-DIO96H/50 with C50FF-x cables.

CIO-ERB48 and CIO-SERB48

Connect to the USB-DIO96H/50 with C50FF-x cables.

Pin name: CTR; Schmitt trigger input.
Counter type: Event counter
Number of channels: 1
Input type: TTL, rising edge triggered
Input source: CTR screw terminal
Resolution: 32 bits
Schmidt trigger hysteresis: 20 mV to 100 mV
Input leakage current: ±1 µA
Maximum input frequency: 1 MHz
High pulse width: 500 ns min
Low pulse width: 500 ns min
Input low voltage: 0 V min, 1.0 V max
Input high voltage: 4.0 V min, 15.0 V max

SSR-RACK08The SSR-RACK08 is a relay accessory board that provides mounting locations for eight Gordos or Opto 22 type solid-state I/O
modules. The board has two 37-pin D connectors for interfacingwith USB-DIO24 Series hardware.
•

Connect to the USB-DIO24 Series with a C37FF-x cable.

SSR-RACK24

The SSR-RACK24 is a relay accessory board that provides
mounting locations for 24 Gordos or Opto 22 type solid-state
I/O modules. The board has one 37-pin D connector and two
50-pin header connectors for interfacing with USB-DIO24 Series
and USB-DIO96H/50 hardware.
•

Connect to the USB-DIO24 Series with a C37FF-x cable.

•

Connect to the USB-DIO96H/50 with C50FF-x cables.

Data Transfer Rates

Digital I/O transfer rates (software paced)
Digital input: 62 port reads or single bit reads per second (typ)
Digital output: 125 port writes or single bit writes per second (typ)Counter/timer read/write rates (software paced)Counter read: 62 port reads per second (typ)Counter clear: 125 port writes per second (typ)Power

SSR-RACK48

Supply current:
USB-DIO24/37: 20 mA typ, 40 mA max. (Total current requirement; includes
up to 5 mA for the status LED.)
USB-DIO24H/37: 100 mA typ, 135 mA max. (Total current; no load)
USB +5V power available
Connected to self-powered hub
		USB-DIO24/37: 4.5 V min, 5.25 V max
		USB-DIO24H/37: (350 mA) – (total output source current)
Connected to bus-powered hub
USB-DIO24/37: 4.1 V min, 5.25 V max
USB-DIO24H/37: 4.75 V min, 5.25 V max
Self-powered refers to USB hubs/hosts with a power supply. Bus-powered refers to
USB hubs/hosts without a power supply. Bus-powered hubs provide downstream
USB power as low as 4.4 V. Guaranteed performance requires a minimum supply
voltage of 4.75 V. Self-powered and root port hubs meet this minimum.

The SSR-RACK48 is a high-density relay accessory board thatprovides mounting locations for 12 quad relays. The board
has one 50-pin header connector for interfacing with the
USB‑DIO96H/50.
•

Connect to the USB-DIO96H/50 with C50FF-x cables.

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USB Digital I/OSpecifications
High pulse width: 500 ns min
Low pulse width: 500 ns min
Input low voltage: 0 V min, 1.0 V max
Input high voltage: 4.0 V min, 15.0 V max

Output current (USB-DIO24/37)
Connected to self-powered hub: 460 mA max
Connected to bus-powered hub: 60 mA max. This is the total amount of current
that can be sourced from the USB +5V and digital outputs.
Over-current protection (USB-DIO24H/37); resettable fuse
Hold current: 350 mA, typ
Trip current: 700 mA typ
Trip/recovery time: 100 ms, max
On resistance: 1.3 Ω max

Power

Supply current
USB-1024LS: 20 mA typ, 40 mA max. (Total current requirement; includes up
to 5 mA for the status LED.)
USB-1024HLS: 80 mA typ, 135 mA max. (Total current requirement; no load)
Input power requirements
USB-1024HLS: 4.75 V min, 5.25 V max.
Bus-powered hubs provide downstream USB power as low as 4.4 V. Guaranteedperformance requires a minimum supply voltage of 4.75 V. Self-powered androot port hubs meet this minimum.
USB +5V power available
Connected to self-powered hub
		USB-1024LS: 4.5 V min, 5.25 V max
		USB-1024HLS: 4.4 V min, 5.25 V max
Self-powered refers to USB hubs and hosts with a power supply.
Connected to bus-powered hub
		USB-1024LS: 4.1 V min, 5.25 V max
		 Bus-powered refers to USB hubs and hosts without their own power supply.
Output current
Connected to self-powered hub
		USB-1024LS: 460 mA max
		USB-1024HLS: (350 mA) – (total output source current)
Connected to bus-powered hub
		USB-1024LS: 60 mA max. This is the total amount of current that can besourced from the USB +5V and digital outputs.
Over-current protection (USB-1024HLS); resettable fuse
Hold current: 350 mA, typ
Trip current: 700 mA typ
Trip/recovery time: 100 ms, max
On resistance: 1.3 Ω max

GeneralUSB controller clock error:
25 °C: ±30 ppm max
0 °C to 70 °C: ±50 ppm max
Device type: USB 1.1 low-speed
Device compatibility: USB 1.1, USB 2.0

Environmental

Operating temperature range: 0 °C to 70 °C
Storage temperature range: –40 °C to 85 °C
Humidity: 0% to 90% non-condensing

Mechanical

Dimensions (L×W×H): 119 × 84 × 14 mm (4.68 × 3.31 × 0.55 in.)USB cable length: 3 m (9.8 ft)
USB cable type: A-B cable, UL type AWM 2725 or equivalent.
Min 24 AWG VBUS/GND, min 28 AWG D+/D–

Specifications: USB-1024LS andUSB-1024HLS
Digital Input/Output

Digital typeUSB-1024LS: 82C55
USB-1024HLS
		Input: 74ACT373
		Output: 74FCT244
Number of I/O: 24 (Port A Bit 0 through Port C Bit7)
Configuration: 2 banks of 8 and 2 banks of 4, or 3 banks of 8
Pull up/pull-down configuration:
All pins pulled up to 5V via 47 kΩ resistors (default). Selection available for pull
down to ground. Hardware selectable via zero Ω resistor.
Input high voltage: 2.0 V min, 5.5 V absolute max
Input low voltage: 0.8 V max, –0.5 V absolute min
Output high voltage
USB-1024LS (IOH = –2.5 mA): 3.0 V min
USB-1024HLS (IOH = –15 mA): 2.4 V min
Output low voltage
USB-1024LS (IOH = –2.5 mA): 0.4 V max
USB-1024HLS (IOH = 64 mA): 0.55 V max
Source current (USB-1024HLS)
Self-powered hub or externally powered root port hub: 15 mA per output,
max. Bus-powered or battery-powered root port hubs are not supported.
Sink current (USB-1024HLS):
365 mA/(number of outputs), max. 64 mA max sink current for any single
output. A low-side resettable fuse protects the USB-1024HLS. This is designed
to protect the host PC or hub from an over current condition. Assuming all
return currents in sinking applications return via the USB cable ground signal,
the maximum allowable return current is 500 mA. Include the USB-1024HLS
unloaded operating current (135 mA) in your power budget.
Power up / reset state: Input mode (high impedance)

GeneralUSB controller clock error:
25 °C: ±30 ppm max
0 °C to 70 °C: ±50 ppm max
Device type: USB 1.1 low-speed
Device compatibility: USB 1.1, USB 2.0

Environmental

Operating temperature range: 0 °C to 70 °C
Storage temperature range: –40 °C to 70 °C
Humidity: 0% to 90% non-condensing

Mechanical

Dimensions (L×W×H): 79 × 82 × 25 mm (3.11 × 3.23 × 0.98 in.)USB cable length: 3 m (9.8 ft)
USB cable type: A-B cable, UL type AWM 2725 or equivalent.
Min 24 AWG VBUS/GND, min 28 AWG D+/D–

Specifications: USB-DIO96H and
USB-DIO96H/50
Digital Input/Output

Output: 74ABT244A
Input: 74ACT373;
USB-DIO96H hardware revision G and later: 74LCX24
Configuration: Eight banks of 8, eight banks of 4, programmable by bank as
input or output
Pull-up/down: High impedance pull-up/down selectable with DIP switch foreach digital input port.
Number of I/O: 96
Output high: 2.0 V min @ –24 mA
Output low: 0.5 V max @ 64 mA
Input high: 2.0 V min, 5.5 V max
Input low: 0.8 V max, –0.5 V absolute min
Input impedance: 47 kΩ (series resistance)
Source current: 24 mA per output max

Counter

Pin name: CTR; Schmitt trigger input.
Counter type: Event counter
Number of channels: 1
Input type: TTL, rising edge triggered
Input source: CTR screw terminal
Resolution: 32 bits
Schmidt trigger hysteresis: 20 mV to 100 mV
Input leakage current: ±1 µA
Maximum input frequency: 1 MHz

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USB Digital I/O
Ordering
Data Transfer Rates

Sink current: 64 mA per output max
Power-up state: Input mode
Debounce mode (available through firmware): samples all inputs eight times
over a specified interval, and latches out the input state when eight consecutive samples are identical (all 0 or all 1). Debouncing intervals: 1 ms, 2 ms,
5 ms, 10 ms, 20 ms, 50 ms, 100 ms, 200 ms, and 400 ms.
Debounce interval accuracy: +0% / –12.5%
Note: The board revision may be determined from the part number label on the
housing that states “193770X-01L”, where X is the board revision.

Digital I/O transfer rates (software paced):
System dependent, 33 to 250 port reads/writes or single bit reads/writes per
second typCounter/timer read/write rates (software paced); USB-DIO96H only:
Counter read: system dependent, 33 to 250 reads per second
Counter clear: system-dependent, 33 to 250 writes per second

Counter (USB-DIO96H only)

Operating temperature range: 0 °C to 60 °C
Storage temperature range: –40 °C to 85 °C
Humidity: 0% to 90% non-condensing

Environmental

Pin name: CTR; Schmitt trigger input protected with a 1.5 kΩ series resistor.
Counter type: Event counter
Number of channels: 1
Input source: CTR screw terminal
Input type : TTL, rising edge triggered
Resolution: 32 bits
Input high voltage limit: 5.0 V recommended max, 5.5 V absolute max
Input low voltage limit: 0 V recommended min, –0.5 V absolute min
Maximum input frequency: 1 MHz
High pulse width: 500 ns min
Low pulse width: 500 ns min

Mechanical

Board dimensions (L×W×H): 304.8 × 121.9 × 20.0 mm (12.0 × 4.8 × 0.8 in.)
Enclosure dimensions (L×W×H):
342.9 × 125.7 × 58.9 mm (13.50 × 4.95 × 2.32 in.)Power

USB +5 V input voltage range: 4.75 V min to 5.25 V max
USB +5 V supply current (all modes of operation): <100 mA
External power input: 5 VDC ± 5% (5 VDC power supply provided). Voltage
specification applies at barrel plug power input. If a different power supply isused, small line resistances could cause significant voltage drop between the
power supply and the barrel plug input.
External power supply (MCC p/n PS-5V3AEPS included):
5 VDC, 15 W, 5% regulation
Alternate external power supply (from PC aux power; cable not included):Jumper selectable Molex® connector internal to case
Voltage supervisor limits:
4.13 V > Vext or Vext > 5.59 V: PWR LED = Off; (power fault)
4.13 V < Vext < 5.59 V: PWR LED = On
Power supply current: 2.7 A max
User 5 V output voltage range (available at 5 V screw terminals):
4.0 V min, 5.25 V max
User 5 V output current available (total from all 5 V screw terminals):
50 mA max

Hardware revision F and earlier:Input type: Schmitt trigger, rising edge triggered, 1.5 kΩ input series resistor
Schmitt trigger hysteresis: 20 mV min, 100 mV max
Input high voltage threshold: 4.0 V max
Input low voltage threshold: 1.0 V min
Hardware revisions G and later:
Input type: Schmitt trigger, rising edge triggered, fixed 47.5 kΩ pull-downresistor, 1.5 kΩ input series resistor
Schmitt trigger hysteresis: 0.6 V min, 1.7 V max
Input high voltage threshold: 3.6 V max
Input low voltage threshold: 1.0 V min
Note: The board revision may be determined from the part number label on the
housing that states “193770X-01L”, where X is the board revision.

Order Information

Accessories and Cables

Part No.

Description

Part No.

Description

USB-DIO24/37

USB digital I/O board with 24 digital I/O, counter
input, and 37-pin D connector. 82C55-based.
Includes USB cable and MCC DAQ software.

C37FF-x

37-conductor ribbon cable, female to female; x is thelength in feet. Use with the USB-DIO24 Series.

C50FF-x

USB-DIO24H/37

USB digital I/O board with 24 high-current
digital I/O (64 mA sink, 15 mA source), counter
input, and 37-pin D connector. Includes USB
cable and MCC DAQ software.

50-conductor ribbon cable, female to female; x is thelength in feet. Use with the USB-DIO96H Series.

CIO-MINI37

37-pin universal screw-terminal board. Use with the
USB‑DIO24/37.

USB digital I/O device with 24 digital I/O,
counter input, screw terminals, and cased
housing. 82C55-based. Includes USB cable and
MCC DAQ software. Functionally equivalent to the
USB-DIO24/37.

CIO-MINI50

50-pin universal screw-terminal board. Use with the
USB‑DIO96H/50.

CIO-TERM100

Universal screw-terminal board, 100 terminals, positions
for pull-up resistors. Use with the USB‑DIO96H/50.

PS-5V3AEPS

Replacement power supply, 15 watt. Interchangeable
plugs are available; refer to the website for details. Use
with the USB-DIO96H Series.

SCB-3737-pin signal connection box. Use with the USB‑DIO24
Series.

SCB-5050-pin signal connection box. Use with the
USB‑DIO96H/50.

USB-1024LS

USB-1024HLS

USB digital I/O device with 24 high-current
digital I/O (64 mA sink, 15 mA source) , counter
input, screw terminals, and cased housing.
Includes USB cable, and MCC DAQ software.
Functionally equivalent to the USB-DIO24H/37.

USB-DIO96H

USB digital I/O device with 96 high-current
digital I/O (64 mA sink, 15 mA source), counter
input, screw terminals, and metal enclosure.
Includes power supply, USB cable, and MCC
DAQ software.

USB-DIO96H/50

USB digital I/O device with 96 high-current
digital I/O (64 mA sink, 15 mA source), header
connectors, and metal enclosure. Includes power
supply, USB cable, and MCC DAQ software.

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USB Digital I/O
Ordering Information
Signal Conditioning Options

Software also Available from MCC

Part No.

Description

Part No.

Description

CIO-ERB08

Electromechanical relay accessory, Form C, 5.6 A(SPDT), two 37-pin connectors, 8 channels. Use with the
USB‑DIO24 Series.

TracerDAQ Pro

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

CIO-ERB24

Electromechanical relay accessory, Form C, 4.3 A(SPDT), 37/50-pin connectors, 24 channels. Use with the
USB‑DIO24 Series and USB-DIO96H/50

DASYLabIcon-based data acquisition, graphics, control, and analysis
software

CIO-ERB48

Electromechanical relay accessory, Form C, 4.3 A (SPDT)
for digital I/O boards, 50-pin connector,
48 channels. Use with the USB-DIO96H/50.

CIO-SERB08

Electromechanical socketed relay accessory, Form C, 5 A(SPDT), two 37-pin connectors, 8-channels. Use with the
USB-DIO24 Series.

CIO-SERB24/
FD

Electromechanical socketed relay accessory, Form C,
4.3 A (SPDT), fault detecting, 37/50-pin connectors,
24 channels. Use with the USB-DIO96H/50.

CIO-SERB48

Electromechanical socketed relay accessory, Form C,
7.5 A (SPDT), 50-pin connectors, 48 channels. Use with
the USB-DIO96H/50.

SSR-4-IAC-05

Solid-state relay, quad, VAC input, 90 to 140 Vrms/VDC

SSR-I-IAC-05

Solid-state relay module, single, AC sense, 90 to 140 VAC

SR-IDC-05

Solid-state relay module, single, DC sense, 3 to
32 VDCSSR-IAC-05A

Solid-state relay module, single, AC sense, 180 to
280 VAC/VDC

SSR-IDC-05NP

Solid-state relay module, single, DC sense, 10 to
32 VDC non-polarized digital inputs

SSR-OAC-05

Solid-state relay module, single, AC switch, 24 to
140 VAC, 3.5 A @ 120 VAC

SSR-OAC-05A

Solid-state relay module, single, AC switch, 24 to
280 VAC, 3.5 A @ 240 VAC

SSR-ODC-05

Solid-state relay module, single, DC switch, 1 to60 VDC @ 3.5 A

SSR-ODC-05A

Solid-state relay module, single, DC switch, 4 to
200 VDC, 1 A

SSR-RACK08

Solid-state relay backplane for Gordos/OPTO-22 typerelays, with two 37-pin connectors; 8-channel. Use with
the USB-DIO24 Series.

SSR-RACK24

Solid-state relay backplane for Gordos/OPTO-22 typerelays, with 37/50-pin connectors; 24-channel. Use with
the USB-DIO24 Series and USB-DIO96H Series.

SSR-RACK48

Solid-state relay backplane for quad relays, with one
50-pin connector; 48-channel (12 quads). Use with the
USB-DIO96H/50.

Measurement Computing
DS USB-DIO(508) 946-5100

7

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October 2018. Rev 4© Measurement Computing Corporation