USB-2633

USB-2633

USB-2633

Analog Input and Digital I/O Measurement and Control

User's Guide

Document Revision 3

July 2014

© Copyright 2014

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HM USB-2633.docx

2

Table of Contents

Preface

About this User's Guide ....................................................................................................................... 5

What you will learn from this user's guide ......................................................................................................... 5

Conventions in this user's guide ......................................................................................................................... 5

Where to find more information ......................................................................................................................... 5

Chapter 1

Introducing the USB-2633 .................................................................................................................... 6

Functional block diagram ................................................................................................................................... 7

Chapter 2

Installing the USB-2633 ........................................................................................................................ 8

What comes with your shipment? ....................................................................................................................... 8

Hardware .......................................................................................................................................................................... 8

Software ............................................................................................................................................................................ 8

Documentation .................................................................................................................................................................. 8

Optional components ........................................................................................................................................................ 8

Unpacking........................................................................................................................................................... 8

Installing the software ........................................................................................................................................ 8

Installing the hardware ....................................................................................................................................... 9

Configuring the hardware ................................................................................................................................... 9

Calibrating the hardware..................................................................................................................................... 9

Field calibration ................................................................................................................................................................ 9

Factory calibration ............................................................................................................................................................ 9

Chapter 3

Signal Connections ............................................................................................................................. 10

68-pin SCSI connector P1 ................................................................................................................................ 10

Cabling.............................................................................................................................................................................11

Signal termination ............................................................................................................................................................11

40-pin header connectors J2, J3, J4, and J5 ...................................................................................................... 12

Cabling.............................................................................................................................................................................13

Signal termination ............................................................................................................................................................13

Chapter 4

Functional Details ............................................................................................................................... 14

Analog input modes .......................................................................................................................................... 14

Software paced .................................................................................................................................................................14

Hardware paced ...............................................................................................................................................................14

Burst mode........................................................................................................................................................ 14

USB-2633 components ..................................................................................................................................... 15

68-pin SCSI connector P1 ................................................................................................................................................15

40-pin header connectors J2, J3, J4, and J5......................................................................................................................16

USB connector .................................................................................................................................................................16

LEDs ................................................................................................................................................................................16

Standoffs ..........................................................................................................................................................................16

Signal descriptions ............................................................................................................................................ 16

Analog input ....................................................................................................................................................................16

Digital I/O ........................................................................................................................................................................16

Counter input ...................................................................................................................................................................18

Trigger input ....................................................................................................................................................................18

Timer output ....................................................................................................................................................................18

Ground .............................................................................................................................................................................18

Power output ....................................................................................................................................................................18

USB power ....................................................................................................................................................... 18

3

USB-2633 User's Guide

Mechanical drawing ......................................................................................................................................... 19

Chapter 5

Specifications ...................................................................................................................................... 20

Analog input ..................................................................................................................................................... 20

Accuracy ........................................................................................................................................................... 20

Analog input DC voltage measurement accuracy ............................................................................................................20

Noise performance ...........................................................................................................................................................21

Settling time for multichannel measurements ..................................................................................................................21

Analog input calibration ................................................................................................................................... 21

Digital input/output........................................................................................................................................... 21

External trigger ................................................................................................................................................. 22

External clock ................................................................................................................................................... 22

Counter ............................................................................................................................................................. 22

Timer output ..................................................................................................................................................... 23

Memory ............................................................................................................................................................ 23

Power ................................................................................................................................................................ 23

USB .................................................................................................................................................................. 24

Environmental .................................................................................................................................................. 24

Mechanical ....................................................................................................................................................... 24

Signal connections ............................................................................................................................................ 24

68-pin SCSI connector (P1) .............................................................................................................................................25

40-pin header connectors (J2 to J5) .................................................................................................................................26

Standoff locations ............................................................................................................................................. 27

4

Preface

About this User's Guide

What you will learn from this user's guide

This user's guide describes the Measurement Computing USB-2633 data acquisition device and lists device specifications.

Conventions in this user's guide

For more information

Text presented in a box signifies additional information related to the subject matter.

Caution! Shaded caution statements present information to help you avoid injuring yourself and others, damaging your hardware, or losing your data.

bold text

italic text

Bold text is used for the names of objects on a screen, such as buttons, text boxes, and check boxes.

Italic text is used for the names of manuals and help topic titles, and to emphasize a word or phrase.

Where to find more information

For additional information relevant to the operation of your hardware, refer to the Documents subdirectory where you installed the MCC DAQ software (C:\Program Files\Measurement Computing\DAQ by default), or search for your device on our website at www.mccdaq.com

.

5

Chapter 1

Introducing the USB-2633

The USB-2633 is a USB 2.0 high-speed device that is supported under the Microsoft

®

Windows

®

operating system.

The USB-2633 is compatible with both USB 1.1 and USB 2.0 ports. The speed of the device may be limited when using a USB 1.1 port due to the difference in transfer rates on the USB 1.1 versions of the protocol (lowspeed and full-speed).

The USB-2633 device provides the following features:

 64 single-ended (SE) analog inputs

 24 DIO channels; bit configurable for input or output

 Four counter inputs

 Four timer outputs

 External digital trigger input

 External AI scan clock input

 One 68-pin SCSI connector and four 40-pin header connectors for field wiring connections

The USB-2633 is powered by the USB supply from the computer; external power is not required.

6

USB-2633 User's Guide

Functional block diagram

USB-2633 functions are illustrated in the block diagram shown in Figure 1.

Introducing the USB-2633

Figure 1. USB-2633 functional block diagram

7

Chapter 2

Installing the USB-2633

What comes with your shipment?

Verify that the following hardware components are included in the shipment:

Hardware

 USB-2633 (with standoffs)

 USB cable

Software

 MCC DAQ CD

Documentation

 MCC DAQ Quick Start Guide

The Quick Start Guide booklet provides an overview of the MCC DAQ software you received with the device, and includes information about installing the software. Please read this booklet completely before installing any software or hardware.

Optional components

 Cables o CA-68-3R o C40FF-x

 Signal termination boards o TB-100 o TB-103 o CIO-MINI40

Unpacking

As with any electronic device, you should take care while handling to avoid damage from static electricity. Before removing the USB-2633 from its packaging, ground yourself using a wrist strap or by simply touching the computer chassis or other grounded object to eliminate any stored static charge.

If any components are missing or damaged, contact us immediately using one of the following methods:

 Knowledgebase: kb.mccdaq.com

 Phone: 508-946-5100 and follow the instructions for reaching Tech Support

 Fax: 508-946-9500 to the attention of Tech Support

 Email: [email protected]

For international customers, contact your local distributor. Refer to the International Distributors section on our website at www.mccdaq.com/International .

Installing the software

Refer to the Quick Start Guide for instructions on installing the software on the MCC DAQ CD. This booklet is available at www.mccdaq.com/PDFmanuals/DAQ-Software-Quick-Start.pdf

.

8

USB-2633 User's Guide Installing the USB-2633

Installing the hardware

Install the software before you install your device

A driver needed to run the USB-2633 is installed when you install the software. Therefore, you need to install the software package you plan to use before you install the hardware.

For operation on a Windows operating system, we recommend that you run Windows Update to update your operating system with the latest USB drivers.

To connect a USB-2633 device to your system, turn on your computer and connect the USB cable to an available USB port on the computer or to an externally powered USB hub connected to the computer.

When connected for the first time, a

Found New Hardware

dialog opens when the operating system detects the device. When the dialog box closes, the installation is complete.

The

Power LED

(top LED) blinks during device detection and initialization, and then remains on. When the board is first powered on, there is usually a momentary delay before the Power LED blinks or turns on.

Configuring the hardware

All hardware configuration options are programmable with software.

Caution! Avoid redundant connections. Ensure that there is no signal conflict between the 68-pin SCSI connector (P1) and the 40-pin connectors (J2 to J5). Failure to do so could possibly cause equipment damage and/or personal injury.

Turn off power to all devices connected to the system before making connections. Electrical shock or damage to equipment can result even under low-voltage conditions.

Always handle components carefully, and never touch connector pins or circuit components unless you are following ESD guidelines in an appropriate ESD-controlled area. These guidelines include using properly-grounded mats and wrist straps, ESD bags and cartons, and related procedures.

Avoid touching board surfaces and onboard components. Only handle boards by their edges. Make sure that the USB-2633 does not come into contact with foreign elements such as oils, water, and industrial particulate.

The discharge of static electricity can damage some electronic components. Semiconductor devices are especially susceptible to ESD damage.

Calibrating the hardware

Field calibration

The USB-2633 supports self-calibration. Run the InstaCal utility to calibrate the USB-2633 whenever the ambient temperature changes by more than ±10 °C from the last self-calibration. The recommended calibration interval is one year. Calibrate the inputs before calibrating the outputs.

Factory calibration

The Measurement Computing Manufacturing Test department performs the initial factory calibration. Return the device to Measurement Computing Corporation if you want the factory calibration restored.

9

Chapter 3

Signal Connections

Board signals are available on the 68-pin SCSI connector P1 and 40-pin header connectors J2, J3, J4, and J5.

Caution!

Avoid redundant connections!

Make sure there is no signal conflict between the SCSI connector pins and header connector pins. Failure to do so could possibly cause equipment damage and/or personal injury.

Use the SCSI cable for optimal analog input settling time

To achieve the best analog input channel-channel settling time performance, connect your signals to the SCSI connector (P1). If the J2 to J5 connectors are to be used, keep the interface cable as short as possible to minimize settling errors.

68-pin SCSI connector P1

The SCSI connector provides connections to the board signals listed in Figure 2.

Figure 2. SCSI connector P1 pinout

10

USB-2633 User's Guide

Cabling

Use a CA-68-3R cable (Figure 3) when connecting signals to the SCSI connector.

Signal Connections

Figure 3. CA-68-3R cable

Signal termination

TB-100

screw terminal board that connects to the SCSI connector with a CA-68-3R cable. A 19-inch rack mount kit (

RM-TB-100)

is also available. The following table lists how TB-100 screw terminals are mapped to the SCSI connector pins.

TB-100 to SCSI connector pin map

TB2 terminal

B5

B6

B7

C0

C1

C2

C3

C4

C5

C6

C7

TTL TRG

GND

CNT0

CNT1

CNT2

A6

A7

B0

B1

B2

B3

B4

+5V

GND

A0

A1

A2

A3

A4

A5

SCSI pin

46

11

45

10

44

9

43

8

42

7

41

15

49

14

48

13

47

12

19

GND

18

52

17

51

16

50

6

GND

5

39

4

TB1 terminal

ACH5

ACH13

AGND

ACH6

ACH14

AGND

ACH7

ACH15

XDAC3 (Note 1)

SGND

NC (Note 2)

XDAC2 (Note 1)

GND (Note 3)

AGND

XDAC0 (Note 1)

AGND

ACH0

ACH8

AGND

ACH1

ACH9

AGND

ACH2

ACH10

AGND

ACH3

ACH11

AGND

ACH4

ACH12

AGND

SCSI pin

60

26

AGND

25

58

AGND

57

23

56

62

20

68

34

AGND

33

66

AGND

65

31

AGND

30

63

AGND

28

61

AGND

55

GND

AGND

22

AGND

11

USB-2633 User's Guide Signal Connections

TB2 terminal SCSI pin TB1 terminal SCSI pin

CNT3

TMR0

TMR1

XDPCR (Note 1)

GND

38

3

37

1

GND

XDAC1 (Note 1)

AGND

XAPCR

GND

EGND

21

AGND

2

GND

SCSI shell

Do not make connections to any terminal labeled NC.

Note 1: Not supported on the USB-2633.

Note 2: Labeled POSREF on the TB-100; not supported on the USB-2633.

Note 3: Labeled NEGREF on the TB-100; not supported on the USB-2633.

40-pin header connectors J2, J3, J4, and J5

The 40-pin headers (

J2

through

J5

) provide alternative connections to the 68-pin connector. Pins 1, 2, 39, and

40 are labeled on each connector.

J2

and J3 provide analog input connections.

J4

provides digital, counter, timer, pacer input, and power output connections.

J5

provides timer, pacer input, and power output connections.

Caution!

Avoid redundant connections!

Make sure there is no signal conflict between the SCSI connector pins and header connector pins. Failure to do so could possibly cause equipment damage and/or personal injury.

Figure 4 shows the pinout for J2 and J3.

Figure 4. Header connector J2 and J3 pinout

12

USB-2633 User's Guide

Figure 5 shows the pinout for J4 and J5.

Signal Connections

Figure 5. Header connector J4 and J5 pinout

Cabling

Use a C40FF-x cable (Figure 6) when connecting signals to a 40-pin header connector.

Figure 6. C40FF-x cable

Connecting a C40FF-x cable to each 40-pin connector provides greater signal connectivity than what is provided by the SCSI connector.

Signal termination

CIO-MINI40

– 40-pin screw terminal board that connects to the J2, J3, J4, or J5 header connector with the

C40FF-x cable.

TB-103

– screw terminal board that mounts directly onto the header connectors.

13

Chapter 4

Functional Details

Analog input modes

The USB-2633 can acquire analog input data in two modes – software paced and hardware paced.

Software paced

You can acquire one analog sample at a time in software paced mode. You initiate the A/D conversion with a software command. The analog value is converted to digital data and returned to the computer. Repeat this procedure until you have the total number of samples that you want.

The sample rate in software paced mode is system-dependent and can range from 33 S/s to 4000 S/s.

Hardware paced

You can acquire data from up to 64 channels in hardware paced mode. The analog data is continuously acquired, converted to digital values, and written into the 4k FIFO buffer on the device until you stop the scan.

The FIFO buffer is serviced in blocks as the data is transferred from the FIFO buffer to the computer memory buffer. You start a continuous scan with either a software command or with an external hardware trigger event.

The maximum sampling rate in hardware paced mode from one to 64 channels is 1,000 kS/s, max.

Burst mode

Burst mode is an optional scan mode used with the onboard pacer to obtain more precise timing between samples. When burst mode is enabled, each successive channel in a scan is sampled at the maximum A/D rate.

This ensures that samples from each channel are taken as close as possible to the same absolute point in time.

When burst mode is disabled, data is sampled at evenly spaced intervals, allowing you to increase the sample period time; doing so can improve settling time and overall measurement accuracy.

Multi-channel scanning with burst mode enabled and disabled is shown in Figure 7.

Figure 7. Multi-channel scan with burst mode enabled and disabled

The burst mode sample period is 1 µs.

You can trigger the acquisition with the external trigger, and control the clock period with the internal A/D pacer clock.

14

USB-2633 User's Guide

USB-2633 components

These USB-2633 components are shown in Figure 8.

 68-pin SCSI connector (P1)

 40-pin header connectors (J2, J3, J4, and J5)

 USB connector

 LED indicators (USB and Power)

Functional Details

1 40-pin connector J4

2 LEDs

3 USB connector

4 68-pin SCSI connector P1

5 40-pin connector J2

6 40-pin connector J3

7 40-pin connector J5

8 Pull-up/down jumpers (W5. W6, W7)

Figure 8. USB-2633 components

68-pin SCSI connector P1

The 68-pin SCSI connector provides the following connections:

 16 single-ended analog inputs (ACH0 to ACH15)

 24 digital I/O (port A0 to A7, B0 to B7, C0 to C7)

 Four counter inputs (CNT0 to CNT3)

 Two timer outputs (TMR0 to TMR1)

 External AI scan clock (XAPCR)

 External digital trigger input (TTLTRG)

 Power output (+VO)

 Analog ground and digital ground (AGND and GND)

Refer to Figure 2 on page 10 for the SCSI connector pinout.

15

USB-2633 User's Guide Functional Details

40-pin header connectors J2, J3, J4, and J5

The header connectors provide alternative connections to the SCSI connector.

Connectors

J2

and

J3

provide analog input connections.

J4

provides digital, counter, timer, pacer input, and power output connections.

J5

provides analog output, timer, pacer I/O, and power output connections.

Refer to Figure 4 and Figure 5 on page 12 for header connector pinouts.

USB connector

The USB connector provides +5 V power and communication. No external power supply is required.

LEDs

The USB-2633 has two LEDs –

Power

and

Activity

.

 The

Power

LED (top) turns on when the device is detected and installed on the computer.

 The

Activity

LED (bottom) blinks when data is transferred, and is off otherwise.

Standoffs

The board is shipped with standoffs that can be used to mount the board onto a metal frame.

Signal descriptions

Analog input

The USB-2633 has a 16-bit A/D converter and provides 64 single-ended analog inputs. The input voltage range is fixed at ±10 V. AI connections are available on the SCSI connector and header connectors J2 and J3:

 SCSI connector P1 provides

ACH0

to

ACH15

 Header connector J2 provides

ACH0

to

ACH15

 Header connector J3 provides

ACH32

to

ACH63

Input pacer clock

You can pace input scanning operations using the input scan clock on the board or with an external signal connected to

XAPCR

. The sampling rate is software-selectable for 0.0149 Hz to 1 MHz.

Channel-Gain queue

The USB-2633 channel-gain queue feature allows you to configure a list of channels to scan. The settings are stored in a channel-gain queue list that is written to local memory on the device.

The channel-gain queue list can contain up to 64 elements. The channels can be listed in any order. An example of a 4-element list is shown in the table below.

Sample channel-gain queue list

Element Channel

0

1

2

3

CH5

CH27

CH45

CH15

Range

BIP10V

BIP10V

BIP10V

BIP10V

Digital I/O

The USB-2633 has 24 TTL-level digital I/O lines that are configured as three 8-bit ports. Each bit is configurable as either input or output. Digital I/O connections are available on the SCSI connector and header connector J4.

You can read digital input ports asynchronously before, during, or after an analog input scan. Digital outputs can be updated asynchronously before, during, or after an acquisition.

16

USB-2633 User's Guide Functional Details

Pull-up/down configuration

Each digital port has 47 kΩ resistors that are jumper configurable as pull-up or pull-down (default). Jumper

W7

configures Port A,

W6

configures Port B, and

W5

configures Port C.

Caution! Turn off power to all devices connected to the system before making connections. Electrical shock or damage to equipment can result even under low-voltage conditions.

Always handle components carefully, and never touch connector pins or circuit components unless you are following ESD guidelines in an appropriate ESD-controlled area. These guidelines include using properly-grounded mats and wrist straps, ESD bags and cartons, and related procedures.

Avoid touching board surfaces and onboard components. Only handle boards by their edges. Make sure that the USB-2633 does not come into contact with foreign elements such as oils, water, and industrial particulate.

The discharge of static electricity can damage some electronic components. Semiconductor devices are especially susceptible to ESD damage.

Figure 9 shows the location of each jumper on the board.

Figure 9. Pull-up/down jumper locations

Figure 10 shows the pull-up and pull-down configuration for each jumper.

Figure 10. Pull-up/down jumper configurations

For more information about digital signal connections

For general information about digital signal connections and digital I/O techniques, refer to the Guide to DAQ

Signal Connections at www.mccdaq.com/signals/signals.pdf

.

17

USB-2633 User's Guide Functional Details

Counter input

The four counter inputs (

CNT0

to

CNT3

) are 32-bit event counters that can accept frequency inputs up to

20 MHz.

Figure 11. Typical counter input

Counter input connections are available on the SCSI connector and the header connector J4.

Trigger input

The external digital trigger input (

TTLTRIG)

is software selectable for edge or level sensitive.

 Edge sensitive mode is configurable for rising or falling edge.

 Level sensitive mode is configurable for high or low level.

The default setting at power up is edge sensitive, rising edge. The trigger input connection is available on the

SCSI connector and header connectors J4 and J5.

Timer output

The four timer outputs (

TMR0

to

TMR3

) are pulse width modulation (PWM) outputs that can generate a square

wave with a programmable frequency in the range of 0.015 Hz to 32 MHz. Figure 12 shows the timer output

schematic.

Figure 12. Typical timer output

Timer output connections are available on the SCSI connector and the header connectors J4 and J5. TMR0 and

TMR1 are available on connector P1 and connector J4. TMR2 and TMR3 are available on connector J5.

Ground

The analog ground (

AGND

) pins provide a common ground for all analog channels. The digital ground (

GND

) pins provide a common ground for the digital, counter, timer, and clock channels and the power terminal.

Power output

The

+VO

pin can output up to 10 mA maximum. Use this terminal to power external devices or circuitry. Power output connections are available on the SCSI connector and header connectors J4 and J5.

Caution! The

+VO

(+5V) terminal is an output. Do not connect to an external power supply or you may damage the device and possibly the computer.

USB power

The maximum current that can be drawn by the device is 500 mA. This maximum applies to most personal computers and self-powered USB hubs. Bus-powered hubs and notebook computers may limit the maximum available output current to 100 mA. If the current requirement of the device exceeds the current available from the computer, connect to a self-powered hub or power the computer with an external power adapter.

18

USB-2633 User's Guide

Mechanical drawing

Functional Details

Figure 13. USB-2633 board dimensions

19

Chapter 5

Specifications

All specifications are subject to change without notice.

Typical for 25 °C unless otherwise specified.

Specifications in italic text are guaranteed by design.

Analog input

Parameter

A/D converter type

ADC resolution

Number of channels

Input voltage range

Absolute maximum input voltage

Input impedance

Input bias current

Input bandwidth

Input capacitance

Maximum working voltage

Crosstalk

Input coupling

Sampling rate

Trigger source

A/D pacing

Burst mode

Throughput

Channel queue

Warm-up time

Table 1. General analog input specifications

Condition

CHx relative to AGND

Small signal (–3 dB)

Adjacent channels, DC to

10 kHz

Software paced

Hardware paced

Specification

Successive approximation

16 bits

64 single-ended

±10 V

±25 V max (power on)

±10.5 V max (power off)

1 GΩ (power on)

390 Ω (power off)

±100 pA

3.1 MHz

40 pf

±10.1 V max relative to AGND

–80 dB

DC

0.0149 Hz to 1,000 kHz; software-selectable

TTLTRG

 Internal input scan clock

 External input scan clock (XAPCR)

Burst rate = 1 µs, software selectable,

33 to 4,000 S/s typ; system dependent

1 MS/s max

Up to 64 element list of random channels

15 minutes min

Accuracy

Analog input DC voltage measurement accuracy

Table 2. DC Accuracy components and specifications. All values are (±)

Range Gain error

(% of reading)

±10 V 0.031

Offset error

(µV)

915

INL error

(% of range)

0.0076

Absolute accuracy at

Full Scale

(µV)

4775

Gain temperature coefficient

(% reading/°C)

0.0013

Offset temperature coefficient

(µV/°C)

35

20

USB-2633 User's Guide Specifications

Noise performance

For the peak-to-peak noise distribution test, a single-ended input channel is connected to AGND at the input terminal block, and 32,000 samples are acquired at the maximum rate.

Table 3. Noise performance specifications

Range Counts

±10 V 8

LSBrms

1.21

Settling time for multichannel measurements

Settling time is defined as the accuracy that can be expected after one conversion when switching from a channel with a DC input at one extreme of full scale to another channel with a DC input at the other extreme of full scale.

Table 4. Input settling time specifications in µS, typical

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 calibration

Table 5. Analog input calibration specifications

Parameter

Recommended warm-up time

Calibration method

Calibration interval

AI calibration reference

Specification

15 minutes min

Self-calibration (firmware)

1 year (factory calibration)

+5 V, ±2.5 mV max. Actual measured values stored in EEPROM.

Tempco: 5 ppm/°C max

Long term stability: 15 ppm/1,000 hours

Digital input/output

Parameter

Digital type

Number of I/O

Configuration

Pull-up configuration

Digital I/O transfer rate

(system-paced, asynchronous)

Input high voltage

Input low voltage

Output high voltage

Output low voltage

Output current

Table 6. Digital input/output specifications

Specification

TTL

24

Three banks of 8. Each bit may be configured as input (power on default) or output.

Each port has 47 kΩ resistors that are configurable as pull-up or pull-down (default) using an onboard jumper (W5, W6, W7).

33 to 4,000 port reads/writes or single bit reads/writes per second typ; system dependent.

2.0 V min

5.0 V absolute max

0.8 V max

0 V recommended min

4.4 V min (IOH = –50 µA)

3.76 V min (IOH = –24 mA)

0.1 V max (IOL = 50 µA)

0.44 V max (IOL = 24 mA)

60 mA max, not to exceed 24 mA for one bit, resulting in 2.5 mA max when all 24 bits are enabled.

21

USB-2633 User's Guide Specifications

External trigger

Parameter

Trigger source

Trigger mode

Trigger latency

Trigger pulse width

Input type

Input high voltage

Input low voltage

Table 7. External trigger specifications

Specification

TTLTRG

Software programmable for edge or level sensitive, rising or falling edge, high or low level. Power on default is edge sensitive, rising edge.

1 µs + 1 clock cycle max

100 ns min

33 Ω series resistor and 49.9 kΩ pull-down to GND

2.2 V min

5.5 V absolute max

1.5 V max

–0.5 V absolute min

0 V recommended min

External clock

Parameter

Terminal name

Terminal type

Terminal description

Input clock rate

Clock pulse width

Input type

Input high voltage

Input low voltage

Table 8. External clock I/O specifications

Specification

XAPCR

Input, active on rising edge.

Receives pacer clock from external source

1 MHz max

100 ns min

33 Ω series resistor, 47 kΩ pull-down to GND

2.2 V min

5.5 V absolute max

1.5 V max

–0.5 V absolute min

0 V recommended min

Counter

Table 9. Counter specifications

Parameter Specification

Terminal names

Number of channels

Resolution

Counter type

Input type

Input source

CNT0, CNT1, CNT2, CNT3

4 channels

32-bit

Event counter

33 Ω series resistor, 47 kΩ pull-down to GND

68 pin SCSI:

40 pin (J4):

CNT0 (pin 5), CNT1 (pin 39), CNT2 (pin 4), CNT3 (pin 38)

CNT0 (pin 35), CNT1 (pin 34), CNT2 (pin 37), CNT3 (pin 36)

33 to 8,000 reads/writes per second typ; system dependent Counter read/writes rates

(software paced)

Input high voltage 2.2 V min

Input low voltage 1.5 V max

Maximum input voltage range

–5V to +10V max

Input frequency 20 MHz, max

High pulse width

Low pulse width

100 ns, min

100 ns, min

22

USB-2633 User's Guide Specifications

Timer output

Parameter

Terminal name

Number of channels

Timer type

Output value

Input source

Internal clock frequency

Register widths

High pulse width

Low pulse width

Output high voltage

Output low voltage

Output waveform

Output rate

Memory

Table 10. Timer specifications

Specification

TMR0, TMR1, TMR2, TMR3

4 channels

PWM output with count, period, delay, and pulse width registers

Default state is idle low with pulses high, software-selectable output invert

68 pin SCSI: TMR0 (pin 3), TMR1 (pin 37)

40 pin (J4): TMR0 (pin 33), TMR1 (pin 32)

40 pin (J5): TMR2 (pin 31), TMR3 (pin 35)

64 MHz

32-bit

10.42 ns, min

10.42 ns, min

4.4 V min (IOH = –50 µA)

3.76 V min (IOH = –1.0 mA)

0.1 V max (IOL = 50 µA)

0.44 V max (IOL = 1.0 mA)

Square wave

64 MHz base rate divided by 2

32

; software-selectable.

Parameter

Data FIFO

Non-volatile memory

Table 11. Memory specifications

Specification

4 kS analog input

32 KB (30 KB firmware storage, 2 KB calibration/user data)

Power

Table 12. Power specifications

Parameter

Supply current (Note 1, Note 2)

+VO output voltage range

+VO output current

Condition

Quiescent current

Specification

280 mA

4.25 V to 5.25 V

10 mA max

Note 1:

This is the total quiescent current requirement for the device that includes up to 10 mA for the Status

LED. This value does not include potential loading of the DIO bits or the +VO pin.

Note 2:

USB 2.0 ports are required by USB 2.0 standards to supply 2500 mW (nominal at 5 V, 500 mA).

Self-powered hubs and externally-powered root port hubs provide up to 500 mA of current for a USB device. Battery-powered root port hubs, such as in a laptop PC, provide 100 mA or 500 mA, depending on the manufacturer. If your laptop is constrained to the 100 mA maximum, you need to purchase a self-powered hub.

23

USB-2633 User's Guide Specifications

USB

Parameter

USB device type

Device compatibility

USB cable type

USB cable length

Table 13. USB specifications

Specification

USB 2.0 (high-speed)

USB 1.1, USB 2.0

A-B cable, UL type AWM 2725 or equivalent. (min 24 AWG VBUS/GND, min 28 AWG D+/D–)

3 m (9.84 ft) max

Environmental

Parameter

Operating temperature range

Storage temperature range

Humidity

Mechanical

Table 14. Environmental specifications

Specification

0 °C to 55 °C max

–40 °C to 85 °C max

0% to 90% non-condensing max

Parameter

PCB dimensions (L × W)

Table 15. Mechanical specifications

Specification

152.4 mm × 150.62 mm (6.00 × 5.93 in.)

Signal connections

Table 16. Board connectors, cables, and terminal boards

Parameter

Connector type

Compatible cables

Compatible terminal boards

Specification

P1: 68-pin standard SCSI TYPE III female connector

J2, J3, J4, J5: Four 40-pin header connectors AMP# 2-103328-0

P1: CA-68-3R ribbon cable; 3 feet.

J2, J3, J4, J5: C40FF-x ribbon cable; x is length in feet.

TB-100:

TB-103:

Connects to a CA-68-3R cable

Mounts directly onto the header connectors

CIO-MINI40: Connects to a C40FF-x cable

24

USB-2633 User's Guide Specifications

68-pin SCSI connector (P1)

Table 17. P1 connector pinout

A1

A3

A5

A7

B1

B3

B5

B7

C1

C3

C5

C7

GND

CNT1

CNT3

TMR1

GND

GND

41

40

39

38

37

36

35

52

51

50

49

48

47

46

45

44

43

42

58

57

56

55

54

53

63

62

61

60

59

Pin Signal name Pin description

68

67

66

65

64

ACH0

AGND

ACH9

ACH2

AGND

Analog input 0

Analog ground

Analog input 9

Analog input 2

Analog ground

ACH11

AGND

ACH12

ACH5

AGND

ACH14

ACH7

NC

NC

AGND

GND

Analog input 11

Analog ground

Analog input 12

Analog input 5

Analog ground

Analog input 14

Analog input 7

No connection

No connection

Analog ground

Digital ground

Port A bit 1

Port A bit 3

Port A bit 5

Port A bit 7

Port B bit 1

Port B bit 3

Port B bit 5

Port B bit 7

Port C bit 1

Port C bit 3

Port C bit 5

Port C bit 7

Digital ground

Counter input 1

Counter input 3

Timer output 1

Digital ground

Digital ground

7

6

5

4

3

2

1

18

17

16

15

14

13

12

11

10

9

8

24

23

22

21

20

19

29

28

27

26

25

Pin Signal name Pin description

34

33

32

31

30

ACH8

ACH1

AGND

ACH10

ACH3

Analog input 8

Analog input 1

Analog ground

Analog input 10

Analog input 3

AGND

ACH4

AGND

ACH13

ACH6

AGND

ACH15

NC

NC

NC

+VO

Analog ground

Analog input 4

Analog ground

Analog input 13

Analog input 6

Analog ground

Analog input 15

No connection

No connection

No connection

Power output

A0

A2

A4

A6

B0

B2

B4

B6

C0

C2

C4

C6

TTLTRG

CNT0

CNT2

TMR0

XAPCR

NC

Port A bit 0

Port A bit 2

Port A bit 4

Port A bit 6

Port B bit 0

Port B bit 2

Port B bit 4

Port B bit 6

Port C bit 0

Port C bit 2

Port C bit 4

Port C bit 6

External digital trigger input

Counter input 0

Counter input 2

Timer output 0

External analog input scan clock

No connection

25

USB-2633 User's Guide

40-pin header connectors (J2 to J5)

Table 18. J2 connector pinout

27

29

31

33

35

37

15

17

19

21

23

25

39

Pin Signal name Pin description

1 ACH27 Analog input 27

3 ACH26 Analog input 26

5

7

9

11

13

AGND

ACH3

ACH2

ACH17

ACH16

Analog ground

Analog input 3

Analog input 2

Analog input 17

Analog input 16

ACH1

ACH0

AGND

ACH23

ACH22

ACH7

ACH6

AGND

ACH29

ACH28

ACH13

ACH12

AGND

Analog input 1

Analog input 0

Analog ground

Analog input 23

Analog input 22

Analog input 7

Analog input 6

Analog ground

Analog input 29

Analog input 28

Analog input 13

Analog input 12

Analog ground

Pin Signal name Pin description

2 ACH19 Analog input 19

4 ACH18 Analog input 18

6

8

AGND

ACH11

10 ACH10

12 ACH25

14 ACH24

Analog ground

Analog input 11

Analog input 10

Analog input 25

Analog input 24

16 ACH9

18 ACH8

20 AGND

22 ACH31

24 ACH30

26 ACH15

28 ACH14

30 ACH21

32 ACH20

34 ACH5

36 ACH4

38 AGND

40 AGND

Analog input 9

Analog input 8

Analog ground

Analog input 31

Analog input 30

Analog input 15

Analog input 14

Analog input 21

Analog input 20

Analog input 5

Analog input 4

Analog ground

Analog ground

31

33

35

37

39

21

23

25

27

29

9

11

13

15

17

19

Pin Signal name Pin description

1

3

5

7

ACH43

ACH35

AGND

ACH42

Analog input 43

Analog input 35

Analog ground

Analog input 42

ACH34

AGND

ACH41

ACH33

ACH40

ACH32

Analog input 34

Analog ground

Analog input 41

Analog input 33

Analog input 40

Analog input 32

ACH47

ACH39

ACH46

ACH38

AGND

ACH45

ACH37

ACH44

ACH36

AGND

Analog input 47

Analog input 39

Analog input 46

Analog input 38

Analog ground

Analog input 45

Analog input 37

Analog input 44

Analog input 36

Analog ground

Table 19. J3 connector pinout

Pin Signal name Pin description

2

4

6

8

ACH59

ACH51

ACH58

ACH50

Analog input 59

Analog input 51

Analog input 58

Analog input 50

10 ACH57

12 ACH49

14 ACH56

16 ACH48

18 AGND

20 ACH63

Analog input 57

Analog input 49

Analog input 56

Analog input 48

Analog ground

Analog input 63

22 ACH55

24 AGND

26 ACH62

28 ACH54

30 ACH61

32 ACH53

34 ACH60

36 ACH52

38 AGND

40 AGND

Analog input 55

Analog ground

Analog input 62

Analog input 54

Analog input 61

Analog input 53

Analog input 60

Analog input 52

Analog ground

Analog ground

Specifications

26

USB-2633 User's Guide Specifications

19

21

23

25

27

29

31

33

35

37

39

Pin Signal name Pin description

1 GND Digital ground

3

5

A0

A1

Port A bit 0

Port A bit 1

7

9

11

13

15

17

A2

A3

GND

B0

B1

B2

Port A bit 2

Port A bit 3

Digital ground

Port B bit 0

Port B bit 1

Port B bit 2

B3

GND

C0

C1

C2

C3

GND

TMR0

CNT0

CNT2

GND

Port B bit 3

Digital ground

Port C bit 0

Port C bit 1

Port C bit 2

Port C bit 3

Digital ground

Timer output 0

Counter input 0

Counter input 2

Digital ground

Table 20. J4 connector pinout

Pin Signal name Pin description

2 XAPCR External analog input scan clock

4

6

A4

A5

Port A bit 4

Port A bit 5

8 A6

10 A7

12 TTLTRG

14 B4

16 B5

18 B6

Port A bit 6

Port A bit 7

External digital trigger input

Port B bit 4

Port B bit 5

Port B bit 6

20 B7

22 +VO

24 C4

26 C5

28 C6

30 C7

32 TMR1

34 CNT1

36 CNT3

38 GND

40 GND

Port B bit 7

Power output

Port C bit 4

Port C bit 5

Port C bit 6

Port C bit 7

Timer output 1

Counter input 1

Counter input 3

Digital ground

Digital ground

Table 21. J5 connector pinout

23

25

27

29

31

33

11

13

15

17

19

21

35

37

39

Pin Signal name Pin description

1

3

5

7

9

NC

NC

AGND

NC

NC

No connection

No connection

Analog ground

No connection

No connection

AGND

NC

AGND

TTLTRG

XAPCR

GND

NC

+VO

NC

GND

TMR2

GND

TMR3

GND

NC

Analog ground

No connection

Analog ground

External digital trigger input

External analog input scan clock

Digital ground

No connection

Power output

No connection

Digital ground

Timer output 2

Digital ground

Timer output 3

Digital ground

No connection

Pin Signal name Pin description

2

4

6

8

NC

NC

AGND

NC

10 NC

No connection

No connection

Analog ground

No connection

No connection

12 AGND

14 NC

16 AGND

18 NC

20 GND

22 GND

24 NC

26 NC

28 NC

30 NC

32 NC

34 NC

36 NC

38 NC

40 NC

Analog ground

No connection

Analog ground

No connection

Digital ground

Digital ground

No connection

No connection

No connection

No connection

No connection

No connection

No connection

No connection

No connection

Standoff locations

The board is designed with standoff holes labeled TL1 to TL8.

TL1

: Standoff hole TL1 Is connected directly to the J1 USB connector shield.

TL2

: Standoff hole TL2 is connected directly to the P1 SCSI connector shield (pin 69, pin 70). The SCSI connector shield and TL2 can also be connected to the board chassis ground guard trace using the R21

(OPEN by default) resistor location.

TL4-8

: Standoff holes TL4-TL8 are electrically isolated from the PCB.

Refer to the mechanical drawing in the hardware user guide for the location of these standoff holes.

27

Measurement Computing Corporation

10 Commerce Way

Suite 1008

Norton, Massachusetts 02766

(508) 946-5100

Fax: (508) 946-9500

E-mail: [email protected] www.mccdaq.com

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