USB-TC

Thermocouple Measurement

User's Guide

October 2016. Rev 10A© Measurement Computing Corporation

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NoticeMeasurement Computing Corporation does not authorize any Measurement Computing Corporation product for
use in life support systems and/or devices without prior written consent from Measurement Computing
Corporation. Life support devices/systems are devices or systems that, a) are intended for surgical implantation
into the body, or b) support or sustain life and whose failure to perform can be reasonably expected to result ininjury. Measurement Computing Corporation products are not designed with the components required, and are
not subject to the testing required to ensure a level of reliability suitable for the treatment and diagnosis ofpeople.

HM USB-TC

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-TC ....................................................................................................................... 6
Overview: USB-TC features............................................................................................................................... 6
Functional block diagram ................................................................................................................................... 6
Chapter 2

Installing the USB-TC ........................................................................................................................... 7
Unpacking........................................................................................................................................................... 7
Installing the software ........................................................................................................................................ 7
Installing the hardware ....................................................................................................................................... 7
Configuring the hardware ................................................................................................................................... 7
Calibrating the hardware..................................................................................................................................... 7
Chapter 3

Sensor Connections ............................................................................................................................. 8
Screw terminal pinout ......................................................................................................................................... 8
Thermocouple input .......................................................................................................................................................... 8
CJC sensors....................................................................................................................................................................... 8
Digital I/O ......................................................................................................................................................................... 9Power output ..................................................................................................................................................................... 9
Ground .............................................................................................................................................................................. 9

Thermocouple connections ................................................................................................................................. 9

Wiring configuration......................................................................................................................................................... 9

Digital I/O connections ..................................................................................................................................... 10
Chapter 4

Functional Details ............................................................................................................................... 11
Thermocouple measurements ........................................................................................................................... 11
Cold junction compensation (CJC) ..................................................................................................................................11
Data linearization .............................................................................................................................................................11
Open-thermocouple detection (OTD) ..............................................................................................................................11

External components ........................................................................................................................................ 12
Screw terminals................................................................................................................................................................12
USB connector .................................................................................................................................................................12
Status LEDs .....................................................................................................................................................................12

Chapter 5

Specifications ...................................................................................................................................... 13
Analog input ..................................................................................................................................................... 13
Channel configurations ..................................................................................................................................... 13
Accuracy ........................................................................................................................................................... 14
Thermocouple measurement accuracy .............................................................................................................................14

Throughput rate ................................................................................................................................................ 14
Digital input/output........................................................................................................................................... 15
Memory ............................................................................................................................................................ 15
Microcontroller ................................................................................................................................................. 15
USB +5V voltage ............................................................................................................................................. 15
3

USB-TC User's Guide

Power ................................................................................................................................................................ 16
USB specifications ........................................................................................................................................... 16
Environmental .................................................................................................................................................. 16
Mechanical ....................................................................................................................................................... 16
Signal connector ............................................................................................................................................... 17
EU Declaration of Conformity ............................................................................................................ 18

4

Preface

About this User’s Guide
What you will learn from this user's guideThis user's guide describes the Measurement Computing USB-TC 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

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

italic text

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
Additional information about USB-TC hardware is available on our website at www.mccdaq.com. You can also
contact Measurement Computing Corporation with specific questions.


Knowledgebase: kb.mccdaq.com
Tech support form: www.mccdaq.com/support/support_form.aspx
Email: techsupport@mccdaq.com
Phone: 508-946-5100 and follow the instructions for reaching Tech Support

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

5Chapter 1

Introducing the USB-TC
Overview: USB-TC features

The USB-TC is a USB 2.0 full-speed, thermocouple input module that is supported under popular Microsoft®
Windows® operating systems. The USB-TC is fully compatible with both USB 1.1 and USB 2.0 ports.
The USB-TC provides eight differential thermocouple input channels. Eight independent, TTL-compatible
digital I/O channels are provided to monitor TTL-level inputs, communicate with external devices, and to
generate alarms. The digital I/O channels are software programmable for input or output.
With the USB-TC, you can take measurements from type J, K, R, S, T, N, E, and B thermocouples.
The USB-TC provides two integrated cold junction compensation (CJC) sensors for thermocouple
measurements.
An open thermocouple detection feature lets you detect a broken thermocouple. An on-board microprocessor
automatically linearizes the measurement data.
The USB-TC is a standalone plug-and-play module which draws power from the USB cable. No external power
supply is required. All configurable options are software programmable.
The USB-TC is fully software calibrated.

Functional block diagram
USB-TC functions are illustrated in the block diagram shown here.

Figure 1. Functional block diagram

6

Chapter 2

Installing the USB-TC
UnpackingAs with any electronic device, you should take care while handling to avoid damage from static
electricity. Before removing the board 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.

Installing the software
Refer to the MCC DAQ Quick Start and the USB-TC product page on our website for information about theavailable software.
Install the software before you install your device
The driver needed to run the USB-TC is installed with the software. Therefore, you need to install the software
package you plan to use before you install the hardware.

Installing the hardware
To connect the USB-TC to your system, turn your computer on, and connect the USB cable to a USB port onyour computer or to an external USB hub that is connected to your computer. The USB cable provides powerand communication to the USB-TC.
When you connect the USB-TC to a computer for the first time, a Found New Hardware dialog opens when theoperating system detects the device. When the dialog closes, the installation is complete. The upper Activity
LED blinks when initially connected and then stays on; the lower Power LED turns on when power is applied.
Caution! Do not disconnect the device from the USB bus while the Activity LED is on and the computer iscommunicating with the USB-TC, or you may lose data and/or your ability to communicate with
the USB-TC.

Configuring the hardware
All hardware configuration options on the USB-TC are programmable with software. Use InstaCal to set thethermocouple type for each channel pair. Configuration options are stored on the USB-TC 's isolated
microcontroller in EEPROM, which is non-volatile memory on the USB-TC module. Configuration options areloaded on power up. The factory default configuration is Type J thermocouple.
Warm up
Allow the USB-TC to warm up for 30 minutes before taking measurements. This warm up time minimizes
thermal drift and achieves the specified rated accuracy of measurements.

Calibrating the hardware
The USB-TC is fully calibrated via InstaCal. Allow a 30 minute warm up before calibrating. This warm up timeminimizes thermal drift and achieves the specified rated accuracy of measurements.

7

Chapter 3

Sensor Connections
The USB-TC supports type J, K, R, S, T, N, E, and B thermocouples.

Thermocouple selection
The thermocouple type you select will depend on your application needs. Review the temperature ranges andaccuracies of each type to determine which is best suited for your application.

Screw terminal pinout
The USB-TC has four rows of screw terminals — two rows on the top edge of the housing, and two rows on thebottom edge. Each row has 26 connections. Between each bank of screw terminals are two integrated CJC
sensors used for thermocouple measurements. Signals are identified in Figure 2.

Figure 2. Screw terminal pinout

Use 16 AWG to 30 AWG wire for your signal connections.
Tighten screw terminal connections
When making connections to the screw terminals, be sure to tighten the screw until tight. Simply touching the
top of the screw terminal is not sufficient to make a proper connection.

Thermocouple input
You can connect up to eight thermocouples to the differential sensor inputs (C0H/C0L to C7H/C7L). The device
supports type J, K, R, S, T, N, E, and B thermocouples.

CJC sensors
The USB-TC has two built in high-resolution temperature sensors. One sensor is located on the right side of the
package, and one sensor is located at the left side.
8

USB-TC User's Guide

Sensor Connections

Digital I/O
You can connect up to eight digital I/O lines to the screw terminals labeled DIO0 to DIO7. Each terminal issoftware configurable for input or output.

Power output
The two +5V terminals are isolated (500 VDC) from the USB +5V.
Caution! Each +5V terminal is an output. Do not connect to an external power supply or you may damage
the USB-TC and possibly the computer.

GroundThe six analog ground terminals (GND) provide a common ground for the input channels and DIO bits and are
isolated (500 VDC) from the USB GND.

Thermocouple connections
A thermocouple consists of two dissimilar metals that are joined together at one end. When the junction of themetals is heated or cooled, a voltage is produced that correlates to temperature.
The USB-TC makes fully differential thermocouple measurements without the need of ground-referencing
resistors. A 32-bit floating point value in either a voltage or temperature format is returned by software. An
open thermocouple detection feature is available for each analog input which automatically detects an open or
broken thermocouple.
Use InstaCal to select the thermocouple type (J, K, R, S, T, N, E, and B) and one or more sensor input channels
to connect the thermocouple.

Wiring configuration
Connect the thermocouple to the USB-TC using a differential configuration, as shown in Figure 3.

Figure 3. Typical thermocouple connection

Connect thermocouples to the USB-TC such that they are floating with respect to GND (pins 9, 19, 28, 38). The
USB-TC GND pins are isolated from earth ground, so connecting thermocouple sensors to voltages referenced
to earth ground is permissible as long as the isolation between the GND pins (9, 19, 28, 38) and earth ground ismaintained.
When thermocouples are attached to conductive surfaces, the voltage differential between multiple
thermocouples must remain within ±1.4 V. For best results, we recommend the use of insulated or ungrounded
thermocouples when possible.
Maximum input voltage between analog input and ground
The absolute maximum input voltage between an analog input and the isolated GND pins is ±25 VDC when thedevice is powered on, and ±40 VDC when the device is powered off.
If you need to increase the length of your thermocouple, use the same type of thermocouple wires to minimize
the error introduced by thermal EMFs.
9

USB-TC User's Guide

Sensor Connections

Digital I/O connections
You can connect up to eight digital I/O lines to the screw terminals labeled DIO0 to DIO7. You can configure
each digital bit for either input or output. All digital I/O lines are pulled up to +5V with a 47 kΩ resistor(default). You can request the factory to configure the resistor for pull-down to ground if desired.
When you configure the digital bits for input, you can use the USB-TC digital I/O terminals to detect the stateof any TTL-level input. Refer to the schematic shown in Figure 4. If you set the switch to the +5V input, DIO0
reads TRUE (1). If you move the switch to GND, DIO0 reads FALSE (0).

Figure 4. Schematic showing switch detection by digital channel DIO0

All ground pins are isolated from earth ground. If a connection is made to earth ground when using digital I/O
and conductive thermocouples, the thermocouples are no longer isolated. In this case, thermocouples must not
be connected to any conductive surfaces that may be referenced to earth ground.
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 (available on our web site at www.mccdaq.com/support/DAQ-Signal-Connections.aspx).

10

Chapter 4

Functional Details
Thermocouple measurements

A thermocouple consists of two dissimilar metals that are joined together at one end. When the junction of themetals is heated or cooled, a voltage is produced that correlates to temperature.
The USB-TC hardware level-shifts the thermocouple’s output voltage into the A/D’s common mode input range
by applying +2.5 V to the thermocouple’s low side at the C#L input. Always connect thermocouple sensors to
the USB-TC in a floating fashion. Do not attempt to connect the thermocouple low side C#L to GND or to aground referencing resistor.

Cold junction compensation (CJC)
When you connect the thermocouple sensor leads to the sensor input channel, the dissimilar metals at the USBTC terminal blocks produce an additional thermocouple junction. This junction creates a small voltage error
term which must be removed from the overall sensor measurement using a cold junction compensation
technique. The measured voltage includes both the thermocouple voltage and the cold junction voltage. To
compensate for the additional cold junction voltage, the USB-TC subtracts the cold junction voltage from thethermocouple voltage.
The USB-TC has two high-resolution temperature sensors that are integrated into the design of the USB-TC.
One sensor is located on the right side of the package, and one sensor is located at the left side. The CJC sensors
measure the average temperature at the terminal blocks so that the cold junction voltage can be calculated. A
software algorithm automatically corrects for the additional thermocouples created at the terminal blocks bysubtracting the calculated cold junction voltage from the analog input's thermocouple voltage measurement.
Increasing the thermocouple length
If you need to increase the length of your thermocouple, use the same type of thermocouple wires to minimize
the error introduced by thermal EMFs.

Data linearization
After the CJC correction is performed on the measurement data, an on-board microcontroller automaticallylinearizes the thermocouple measurement data using National Institute of Standards and Technology (NIST)
linearization coefficients for the selected thermocouple type.
The measurement data is then output as a 32-bit floating point value in the configured format (voltage ortemperature).

Open-thermocouple detection (OTD)
The USB-TC is equipped with an open-thermocouple detection for each analog input channel. With OTD, any
open-circuit or short-circuit condition at the thermocouple sensor is detected by the software. An open channel
is detected by driving the input voltage to a negative value outside the range of any thermocouple output. The
software recognizes this as an invalid reading and flags the appropriate channel. The software continues tosample all channels when OTD is detected.
Input leakage current
With open-thermocouple detection enabled, 105 nA (max.) of input leakage current is injected into thethermocouple. This current can cause an error voltage to develop across the lead resistance of the thermocouple
that is indistinguishable from the thermocouple voltage you are measuring. You can estimate this error voltage
with the following formula:error voltage = resistance of the thermocouple × 105 nA

To reduce the error, reduce the length of the thermocouple to lower its resistance, or lower the AWG of the wireby using a wire with a larger diameter. With open-thermocouple detection disabled, 30 nA (max.) of input
leakage current is injected into the thermocouple.
11

USB-TC User's Guide

Functional Details

External components
The USB-TC has the following external components, as shown in Figure 5.

1
2

Screw terminal pins 1 to 26
Screw terminal pins 27 to 52

3
4

Status LEDs: Activity (top) and Power (bottom)
USB connector

Figure 5.External component locations

Screw terminals
Use the screw terminals for connecting temperature sensors and digital I/O lines. These terminals also provide
ground and power output connections. Refer to the "Sensor Connections" chapter on page 8 for information
about the device screw terminals.

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

Status LEDs
USB-TC has two LEDs that indicate the status of power and data. The LEDs are stacked one above the other.


The Activity LED (top) blinks when data is transferred over the USB bus.
The Power LED (bottom) turns on when power is applied.

12

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
Table 1. Generic analog input specifications
Parameter

Condition

Specification

Thermocouple

Four dual 24-bit, Sigma-Delta type
8 differential
500 VDC minimum between field wiring and USB
interface
Thermocouple sensor type±0.080 V

A/D converters
Number of channels
Input isolation
Channel configuration
Differential input voltage
range
Absolute maximum input
voltage
Input impedance
Input leakage current
Normal mode rejection ratio
Common mode rejection ratio
Resolution
No missing codes
Input couplingWarm-up time
Open thermocouple detect

CJC sensor accuracy±C0x through ±C7x relative to
GND (pins 9, 19, 28, 38)
Open thermocouple detect enabled
fIN = 60 Hz
fIN = 50 Hz/60 Hz

15 °C to 35 °C
0 °C to 70 °C±24 V power on,±24 V power off
5 GΩ, min
105 nA max
90 dB min
100 dB min
24 bits
24 bitsDC
30 minutes min
Automatically enabled when the channel pair isconfigured for thermocouple sensors.
The maximum open detection time is 3 seconds.
±0.25 °C typ,±0.5 °C max–1.0 °C to +0.5 °C max

Channel configurations
Table 2. Channel configuration specifications
Sensor Category

Condition

Specification

Thermocouple

J, K, S, R, B, E, T, or N

8 differential channels

Note 1:
Note 2:Channel configuration information is stored in the EEPROM of the isolated microcontroller by the firmware
whenever any item is modified. Modification is performed by commands issued over USB from an external
application, and the configuration is made non-volatile through the use of the EEPROM.
The factory default configuration is Type J.

13USB-TC User's Guide

Specifications

Accuracy
Thermocouple measurement accuracy
Table 3. Thermocouple accuracy specifications, including CJC measurement error
Sensor TypeMaximum error (°C)

Typical error (°C)

Temperature range (°C)

J

±1.499±0.643±1.761±0.691±2.491±1.841±2.653±1.070±1.779±0.912±1.471±0.639±1.717±0.713±1.969±0.769±0.507±0.312±0.538±0.345±0.648±0.399±0.650±0.358±0.581±0.369±0.462±0.245±0.514±0.256±0.502±0.272–210 to 0
0 to 1200–210 to 0
0 to 1372–50 to 250
250 to 1768.1–50 to 250
250 to 1768.1
250 to 700
700 to 1820
–200 to 0
0 to 1000–200 to 0
0 to 600–200 to 0
0 to 1300

K
S
R
B
E
T
N
Note 3:Note 4:Note 5:

Thermocouple specifications include linearization, cold-junction compensation and system noise. These specs
are for one year, or 3000 operating hours, whichever comes first and for operation of the device between 15 °C
and 35 °C. For measurements outside this range, add ±0.5 degree to the maximum error shown. There are CJC
sensors on each side of the module. The accuracy listed above assumes the screw terminals are at the same
temperature as the CJC sensor. Errors shown do not include inherent thermocouple error. Please contact yourthermocouple supplier for details on the actual thermocouple error.
Thermocouples must be connected to the device such that they are floating with respect to GND. The GND pins
are isolated from earth ground, so connecting thermocouple sensors to voltages referenced to earth ground ispermissible as long as the isolation between the GND pins and earth ground is maintained.
When thermocouples are attached to conductive surfaces, the voltage differential between multiple
thermocouples must remain within ±1.4V. For best results we recommend the use of ungrounded or insulated
thermocouples when possible.

Throughput rate
Table 4. Throughput rate specifications
Number of input channels

Maximum throughput

1
2
3
4
5
6
7
8

2 S/s
2 S/s on each channel, 4 S/s total
2 S/s on each channel, 6 S/s total
2 S/s on each channel, 8 S/s total
2 S/s on each channel, 10 S/s total
2 S/s on each channel, 12 S/s total
2 S/s on each channel, 14 S/s total
2 S/s on each channel, 16 S/s total

Note 6:

The analog inputs are configured to run continuously. Each channel is sampled twice per second. The maximum
latency between when a sample is acquired and the temperature data is provided by the USB unit isapproximately 0.5 seconds.

14USB-TC User's Guide

Specifications

Digital input/output
Table 5. Digital input/output specifications
Parameter

Specification

Digital type
Number of I/O
Configuration

CMOS
8 (DIO0 through DIO7)
Independently configured for input or output.
Power on reset is input mode.
All pins pulled up to +5 V via 47 K resistors (default). Pull-down to ground (GND)
also available.
 Digital input: 50 port reads or single bit reads per second, typ Digital output: 100 port writes or single bit writes per second, typ
2.0 V min, 5.5 V absolute max
0.8 V max, –0.5 V absolute min
0.7 V max

Pull-up/pull-down configuration
Digital I/O transfer rate
(software paced)
Input high voltage
Input low voltage
Output low voltage(IOL = 2.5 mA)
Output high voltage(IOH = –2.5 mA)
Note 7:

3.8 V minAll ground pins are isolated from earth ground. If a connection is made to earth ground when using digital I/O
and conductive thermocouples, the thermocouples are no longer isolated. In this case, thermocouples must not
be connected to any conductive surfaces that may be referenced to earth ground.

MemoryTable 6. Memory specifications
Parameter

Specification

EEPROM

1,024 bytes isolated micro reserved for sensor configuration
256 bytes USB micro for external application use

Microcontroller
Table 7. Microcontroller specifications
Parameter

Specification

Type

Two high performance 8-bit RISC microcontrollers

USB +5V voltage
Table 8. USB +5V voltage specifications
Parameter

Specification

USB +5V (VBUS) input
voltage range

4.75 V min to 5.25 V max

15

USB-TC User's Guide

Specifications

Power
Table 9. Power specifications
Parameter

Condition

Specification

Supply current
Supply current(Note 8)User +5V output voltage range(pins 21 and 47)
User +5V output current(pins 21 and 47)
Isolation

USB enumeration
Continuous mode<100 mA
140 mA typ

Connected to self-powered hub. (Note 9)
Bus-powered and connected to a self-powered hub. (Note 9)4.75 V min to
5.25 V max
10 mA max

Measurement system to PC

500 VDC min

Note 8:Note 9:This is the total current requirement for the device which includes up to 10 mA for the status LED.
Self-Powered Hub refers to a USB hub with an external power supply. Self-powered hubs allow a connected
USB device to draw up to 500 mA.
Root Port Hubs reside in the PC USB Host Controller. The USB port(s) on your PC are root port hubs. All
externally powered root port hubs (desktop PC’s) provide up to 500 mA of current for a USB device. Batterypowered root port hubs provide 100 mA or 500 mA, depending upon the manufacturer. A laptop PC that is notconnected to an external power adapter is an example of a battery-powered root port hub.

USB specifications
Table 10. USB specifications
Parameter

Specification

USB device type
Device compatibility
Device power capability
USB cable type

USB 2.0 (full-speed)
USB 1.1, USB 2.0
Self-powered, 100 mA consumption max
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

USB cable length

Environmental
Table 11. Environmental specifications
Parameter

Specification

Operating temperature range
Storage temperature range
Humidity

0 °C to 70 °C–40 °C to 85 °C
0% to 90% non-condensing

Mechanical
Table 12. Mechanical specifications
Parameter

Specification

Dimensions (L × W × H)User connection length

128.52 x 88.39 × 35.56 mm (5.06 × 3.48 × 1.43 ft)
3 m (9.84 ft) max

16USB-TC User's Guide

Specifications

Signal connector
Table 13. Signal connector specifications
Parameter

Specification

Connector type
Wire gauge range

Screw terminal
16 AWG to 30 AWG
Table 14. Screw terminal pinout

Pin
1
2
3
4
5
6
7
8
9
10

Signal Name
RSVD
NC
C0H
C0L
NC
RSVD
C1H
C1L
GND
RSVD

Pin Description
Reserved, Do Not Use
No connection
CH0 sensor input (+)
CH0 sensor input (–)
No connection
Reserved, Do Not Use
CH1 sensor input (+)
CH1 sensor input (–)
GroundReserved, Do Not Use

Pin
27
28
29
30
31
32
33
34
35
36

CJC sensor
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26

RSVD
NC
C2H
C2L
NC
RSVD
C3H
C3L
GND
RSVD
+5V
GND
DIO0
DIO1
DIO2
DIO3

Signal Name
RSVD
GND
C7L
C7H
RSVD
NC
C6L
C6H
NC
RSVD

Pin Description
Reserved, Do Not Use
GroundCH7 sensor input (–)
CH7 sensor input (+)
Reserved, Do Not Use
No connection
CH6 sensor input (–)
CH6 sensor input (+)
No connection
Reserved, Do Not Use

CJC sensor
Reserved, Do Not Use
No connection
CH2 sensor input (+)
CH2 sensor input (–)
No connection
Reserved, Do Not Use
CH3 sensor input (+)
CH3 sensor input (–)
GroundReserved, Do Not Use+5V output
GroundDIO channel 0
DIO channel 1
DIO channel 2
DIO channel 3

37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52

17

RSVD
GND
C5L
C5H
RSVD
NC
C4L
C4H
NC
RSVD
+5V
GND
DIO7
DIO6
DIO5
DIO4

Reserved, Do Not Use
GroundCH5 sensor input (–)
CH5 sensor input (+)
Reserved, Do Not Use
No connection
CH4 sensor input (–)
CH4 sensor input (+)
No connection
Reserved, Do Not Use+5V output
GroundDIO channel 7
DIO channel 6
DIO channel 5
DIO channel 4

EU Declaration of Conformity
According to ISO/IEC 17050-1:2010
Manufacturer:
Address:

Product Category:
Date and Place of Issue:
Test Report Number:

Measurement Computing Corporation
10 Commerce Way
Norton, MA 02766
USAElectrical equipment for measurement, control and laboratory use.
June 2, 2016, Norton, Massachusetts USA
EMI4193.05 / EMI5215B.08

Measurement Computing Corporation declares under sole responsibility that the product

USB-TCis in conformity with the relevant Union Harmonization Legislation and complies with the essential
requirements of the following applicable European Directives:
Electromagnetic Compatibility (EMC) Directive 2014/35/EU
Low Voltage Directive 2014/35/EU
RoHS Directive 2011/65/EU
Conformity is assessed in accordance to the following standards:
EMC:
Emissions: EN 61326-1:2013 (IEC 61326-1:2012), Class A
 EN 55011: 2009 + A1:2010 (IEC CISPR 11:2009 + A1:2010), Group 1, Class A
Immunity: EN 61326-1:2013 (IEC 61326-1:2012), Controlled EM Environments EN 61000-4-2:2008 (IEC 61000-4-2:2008)
 EN 61000-4-3 :2010 (IEC61000-4-3:2010)
Safety: EN 61010-1 (IEC 61010-1)
Environmental Affairs:
Articles manufactured on or after the Date of Issue of this Declaration of Conformity do not contain any of therestricted substances in concentrations/applications not permitted by the RoHS Directive.

Carl Haapaoja, Director of Quality Assurance

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