Measurement Computing

(508) 946-5100

6

info@mccdaq.com

mccdaq.com

USB Digital I/O

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 consecu-

tive 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.

Counter (USB-DIO96H only)

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

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-down

resistor, 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.

Data Transfer Rates

Digital I/O transfer rates (software paced):

System dependent, 33 to 250 port reads/writes or single bit reads/writes per

second typ

Counter/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

Environmental

Operating temperature range: 0 °C to 60 °C

Storage temperature range: –40 °C to 85 °C

Humidity: 0% to 90% non-condensing

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 is

used, 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

Accessories and Cables

Part No.

Description

C37FF-x

37-conductor ribbon cable, female to female; x is the

length in feet. Use with the USB-DIO24 Series.

C50FF-x

50-conductor ribbon cable, female to female; x is the

length in feet. Use with the USB-DIO96H Series.

CIO-MINI37

37-pin universal screw-terminal board. Use with 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-37

37-pin signal connection box. Use with the USB-DIO24

Series.

SCB-50

50-pin signal connection box. Use with the

USB-DIO96H/50.

Ordering

Order Information

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.

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.

USB-1024LS

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.

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.