National Instruments NI 9503 Specifications

USER MANUAL AND SPECIFICATIONS

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NI 9503

Stepper Drive

This document describes how to use the National Instruments 9503
module and includes specifications and pin assignments for the
NI 9503. Visit ni.com/info and enter rdsoftwareversion to
determine which software you need for the modules you are using.
For information about installing, configuring, and programming the
system, refer to the system documentation. Visit
enter

cseriesdoc for information about C Series documentation.

Note The safety guidelines and specifications in this

ni.com/info and

document are specific to the NI 9503. The other
components in the system may not meet the same safety
ratings and specifications. Refer to the documentation for
each component in the system to determine the safety
ratings and specifications for the entire system.

Safety Guidelines

Operate the NI 9503 only as described in these operating
instructions.

Hot Surface This icon denotes that the component may

be hot. Touching this component may result in bodily
injury.

2 | ni.com | NI 9503 User Manual and Specifications

Caution Do not operate the NI 9503 in a manner not

specified in these operating instructions. Product misuse
can result in a hazard. You can compromise the safety
protection built into the product if the product is damaged
in any way. If the product is damaged, return it to
National Instruments for repair.

Safety Guidelines for Hazardous Locations

The NI 9503 is suitable for use in Class I, Division 2, Groups A, B,
C, D, T4 hazardous locations; Class I, Zone 2, AEx nA IIC T4, and
Ex nA IIC T4 hazardous locations; and nonhazardous locations
only. Follow these guidelines if you are installing the NI 9503 in a
potentially explosive environment. Not following these guidelines
may result in serious injury or death.

Caution Do not disconnect I/O-side wires or connectors

unless power has been switched off or the area is known
to be nonhazardous.

Caution Do not remove modules unless power has been

switched off or the area is known to be nonhazardous.

NI 9503 User Manual and Specifications | © National Instruments | 3

Caution Substitution of components may impair

suitability for Class I, Division 2.

Caution For Division 2 and Zone 2 applications, install

the system in an enclosure rated to at least IP 54 as
defined by IEC 60529 and EN 60529.

Caution For Division 2 and Zone 2 applications, install

a protection device between the input signal and the V
pin. The device must prevent the V

-to-channel voltage

sup

sup

from exceeding 42 V if there is a transient overvoltage
condition.

Caution For Zone 2 applications, connected signals

must be within the following limit:

Capacitance .......................... 0.2 μF max

Special Conditions for Hazardous Locations Use in
Europe

This equipment has been evaluated as Ex nA IIC T4 Gc equipment
under DEMKO Certificate No. 12 ATEX

1202658X. Each module

is marked II 3G and is suitable for use in Zone 2 hazardous
locations, in ambient temperatures of -40 °C ≤ Ta ≤ 70 °C. If you are

4 | ni.com | NI 9503 User Manual and Specifications

using the NI 9503 in Gas Group IIC hazardous locations, you
must use the device in an NI chassis that has been evaluated as
Ex nC IIC T4, EEx nC IIC T4, Ex nA IIC T4, or Ex nL IIC T4
equipment.

Caution You must make sure that transient disturbances

do not exceed 140% of the rated voltage.

Caution The system shall be mounted in an ATEX

certified enclosure with a minimum ingress protection
rating of at least IP54 as defined in IEC/EN 60529 and
used in an environment of not more than Pollution
Degree 2.

Caution The enclosure must have a door or cover

accessible only by the use of a tool.

Electromagnetic Compatibility Guidelines

This product was tested and complies with the regulatory
requirements and limits for electromagnetic compatibility (EMC)
as stated in the product specifications. These requirements and
limits are designed to provide reasonable protection against

NI 9503 User Manual and Specifications | © National Instruments | 5

harmful interference when the product is operated in its intended
operational electromagnetic environment.

This product is intended for use in industrial locations. As such,
there is no guarantee that harmful interference will not occur in
a particular installation, when the product is connected to a test
object, or if the product is used in residential areas. To minimize
the potential for the product to cause interference to radio and
television reception or to experience unacceptable performance
degradation, install and use this product in strict accordance with
the instructions in the product documentation.

Furthermore, any changes or modifications to the product not
expressly approved by National Instruments could void your
authority to operate it under your local regulatory rules.

Caution To ensure compliance with the applicable

regulatory requirements, product installation requires
either special considerations or user-installed, add-on
devices. See the product installation instructions for
further information.

6 | ni.com | NI 9503 User Manual and Specifications

Caution The inputs/outputs of this product can be

damaged if subjected to Electrostatic Discharge (ESD).
To prevent damage, industry-standard ESD prevention
measures must be employed during installation,
maintenance, and operation.

Special Guidelines for Marine Applications

Some products are Lloyd’s Register (LR) Type Approved for
marine (shipboard) applications. To verify Lloyd’s Register
certification for a product, visit ni.com/certification and
search for the LR certificate, or look for the Lloyd’s Register mark
on the product label.

Caution In order to meet the EMC requirements for

marine applications, install the product in a shielded
enclosure with shielded and/or filtered power and
input/output ports. In addition, take precautions when
designing, selecting, and installing measurement probes
and cables to ensure that the desired EMC performance is
attained.

NI 9503 User Manual and Specifications | © National Instruments | 7

NI 9503 Hardware Overview

The NI 9503 is a stepper motor drive for use with 2-phase hybrid
stepper motors in either bipolar or unipolar winding configuration.
It uses software-programmable control algorithms that reduce
torque ripple, dampen high-speed resonance, and implements
smoother motion during microstepping.

The NI 9503 returns the motor current and bus voltage to the
LabVIEW FPGA module for use in a current PI loop and
antiresonance algorithms. NI 9503 status information such as drive
status and drive faults are also returned to the LabVIEW FPGA
module. Refer to the NI 9503 topic in the LabVIEW Help, available
by selecting Help»LabVIEW Help, for information about the
available status information.

Note National Instruments offers NEMA 8, NEMA 11,

NEMA 14, NEMA 17 and NEMA 23 stepper motors
compatible with the NI 9503. Go to ni.com/motion/

stepper

for more information about NI stepper motors.

The NI 9503 reduces torque ripple at speeds near 1 RPS that are
caused by fourth harmonic disturbances. The torque ripple
smoothing algorithm is software programmable and can be tuned

8 | ni.com | NI 9503 User Manual and Specifications

for any motor. Motors supported by National Instruments have
already been tuned for optimal torque smoothing.

The NI 9503 uses a software-programmable antiresonance
algorithm to reduce stepper motor resonance above 2 RPS. The
antiresonance algorithm allows a stepper motor to use more
available torque and run at higher speeds without stalling.

The NI 9503 supports software-programmable microstepping.
Microstepping divides full steps into smaller steps to create
smoother motion. The NI 9503 supports microstepping rates up to

256. When full-stepping, a resonance can occur, causing vibration
and reducing the motor torque. The NI 9503 offers the best
performance when combining microstepping with the torque
smoothing and antiresonance properties. Refer to the Step Resolver
topic in the LabVIEW Help, available by selecting Help»
LabVIEW Help, for information about microstepping options.

The NI 9503 allows for phase current reduction after the motor
stops moving. Unlike servo motors, stepper motor coils remain
fully energized when the motor is not moving. This allows for
strong holding torque, but generates substantial heat in the motor.
Many applications do not require maximum holding torque when
the motor is at rest, which means that the motor is wasting power.
The amount of current reduction and delay before current

NI 9503 User Manual and Specifications | © National Instruments | 9

reduction becomes active is software-programmable. Refer to the
Current Scheduler topic in the LabVIEW Help, available by
selecting Help»LabVIEW Help, for information about current
reduction.

Figure 1. NI 9503 Block Diagram

LabVIEW FPGA Module with SoftMotion

Position

Setpoint

Step

Resolver

Current

Scheduler

Correction

Angle

Current

Loop

Phase A & B

Current

Fault

Monitor

Anti-

resonance

PWM

Generator

NI 9503

Bridge

Controller

Detection

Bus

voltage

Fault

Power

Stage

Current

Sense

V

sup

COM

+

–

Motor

10 | ni.com | NI 9503 User Manual and Specifications

Connecting the NI 9503

The NI 9503 has a 10-terminal detachable screw-terminal
connector that provides connections for the stepper motor signals,
a motor DC power supply, COM, and chassis ground. Refer to
Figure 2 for the pin assignments.

Caution To ensure EMC compliance, special

considerations are required for all cable connections.
Refer to the Cable Requirements for EMC Compliance
section.

Note You must use 2-wire ferrules to create a secure

connection when connecting more than one wire to a
single terminal on the NI 9503 screw terminal.

Caution Do not turn on or plug in the motor DC power

supply until the screw-terminal connector is fully
inserted.

NI 9503 User Manual and Specifications | © National Instruments | 11

Figure 2. NI 9503 Connections

Phase A+
Phase A–
Phase B+
Phase B–
Reserved
Reserved
Reserved
COM
Vsup
(Chassis Ground)

0
1
2
3
4
5
6
7
8
9

12 | ni.com | NI 9503 User Manual and Specifications

Motor Power Signals

The Phase A± and Phase B± signals power the stepper motor.
Figure 3 shows a typical bipolar stepper motor connection.

Figure 3. Typical Bipolar Stepper Motor (2-Phase Type) Connection

Red

Blue

Yellow

White

Phase A+
Phase A–
Phase B+
Phase B–

Phase A+
Phase A–
Phase B+
Phase B–
Reserved
Reserved
Reserved
COM
Vsup

0
1
2
3
4
5
6
7
8
9

Caution The stepper motor terminals on this drive are

energized when the module is enabled. Do not connect
wires to or disconnect wires from the NI 9503 when it
is enabled.

Use a multiconductor cable with an overall shield and conductors
of 20 AWG or larger for the motor power cable.

NI 9503 User Manual and Specifications | © National Instruments | 13

The NI 9503 contains a highly efficient power stage. Two-phase
stepper motors come in 4-, 6-, and 8-wire variations. You must wire
the stepper motors in a 4-wire configuration as shown in Figure 3.

Caution Never connect unused stepper motor terminals

to pin 9 (Chassis Ground) or to each other.

When using a 6- or 8-wire stepper motor you must leave unused
lead wires disconnected. Figure 4 shows a 6-wire and an 8-wire
stepper motor.

Figure 4. 6-Wire and 8-Wire Stepper Motors

6-wire 8-wire

14 | ni.com | NI 9503 User Manual and Specifications

A 4-wire motor is the same as a 6-wire motor except that the center
taps (CT) are not brought out. To use a 6-wire motor in a 4-wire
configuration you can isolate the center taps for a series (full coil)
configuration. Series configurations produce the most torque per
amp but have the disadvantage of poorer high-speed performance.

Figure 5. 6-Wire Series Stepper Motor Connection

(Higher Torque, Lower Speed)

Phase A+

NC*

Phase A–

Phase B+

NC*

Phase B–

*NC = Not Connected

Phase A+
Phase A–
Phase B+
Phase B–
Reserved
Reserved
Reserved
COM
Vsup

0
1
2

3

4
5
6
7

8

9

NI 9503 User Manual and Specifications | © National Instruments | 15

You can obtain improved high-speed performance with a 6-wire
motor by using a half-coil configuration shown in Figure 6. This
configuration sacrifices low-speed torque for better high-speed
performance. With this configuration, it is typically not possible to
produce the rated torque of the motor without the risk of the motor
overheating because only half of the windings are used.

Figure 6. 6-Wire Half-Coil Stepper Motor Connection

(Higher Speed, Lower Torque)

Phase A+
Phase A–

NC*

Phase B+

Phase B–

NC*

*NC = Not Connected

16 | ni.com | NI 9503 User Manual and Specifications

Phase A+
Phase A–
Phase B+
Phase B–
Reserved
Reserved
Reserved
COM
Vsup

0
1
2
3
4
5
6
7
8
9

For maximum flexibility, you can connect 8-wire stepper motors

Phase B–

0
1
2
3
4
5
6
7
8
9

Phase A+
Phase A–
Phase B+
Phase B–
Reserved
Reserved
Reserved
COM
Vsup

Phase A+

Phase A–

Phase B+

Orange

Org/Wht

Blk/Wht

Black

Red

Red/Wht
Yel/Wht

Yellow

in series, parallel, or half-coil configurations. Connecting the
windings in a series configuration, as shown in Figure 7, produces
the most torque per amp but has the disadvantage of higher
inductance and poorer high-speed performance.

Figure 7. 8-Wire Series Stepper Motor Connection

(Higher Torque, Lower Speed)

NI 9503 User Manual and Specifications | © National Instruments | 17

Notice that an 8-wire motor wired in a series configuration is
virtually identical to a 6-wire motor and typically has the same
high torque but low-speed characteristics.

Alternatively, you can connect 8-wire stepper motors in a parallel
configuration as shown in Figure 8. This configuration produces
better high-speed performance but requires more current to
produce rated torque.

Figure 8. 8-Wire Parallel Stepper Motor Connection

(Higher Speed, Lower Torque)

Phase A+
Phase A–

Black

Blk/Wht

Org/Wht

Orange

Red

Red/Wht

Yel/Wht

Yellow

Phase B+

Phase B–

Phase A+
Phase A–
Phase B+
Phase B–
Reserved
Reserved
Reserved
COM
Vsup

0
1
2
3
4
5
6
7
8
9

18 | ni.com | NI 9503 User Manual and Specifications

Finally, you can connect 8-wire stepper motors in a half-coil

0
1
2
3
4
5
6
7
8
9

Phase A+
Phase A–
Phase B+
Phase B–
Reserved
Reserved
Reserved
COM
Vsup

Phase B–

Phase A+
Phase A–

Phase B+

NCNC

NC

NC

*NC = Not Connected

configuration as shown in Figure 9. The half-coil configuration
sacrifices low-speed torque for better high-speed performance.
With this configuration, it is typically not possible to produce the
rated torque of the motor without the risk of the motor overheating
because only half of the windings are used.

Figure 9. 8-Wire Half-Coil Stepper Motor Connection

NI 9503 User Manual and Specifications | © National Instruments | 19

Wiring for High Vibration Applications

Ferrule

If an application is subject to high vibration, National Instruments
recommends that you use ferrules to terminate wires to the
detachable screw-terminal connector.

Refer to Figure 10 for an illustration of using ferrules.

Figure 10. 10-Terminal Detachable Screw-Terminal Connector with

Ferrule Terminated Wire

20 | ni.com | NI 9503 User Manual and Specifications

LED Indicators

1 2 3 4

The NI 9503 has four LEDs to display status information.

1 Enabled (green)
2 Vsup (Motor Power) (green)

3 User (yellow)
4 Fault (red)

Enabled

The Enabled LED (green) illuminates when the drive is enabled
and the output power stage is active, and is flashing when the drive
is disabled and the output power stage is inactive. Refer to the

NI 9503 topic in the LabVIEW Help, available by selecting Help»
LabVIEW Help, for information about enabling the drive.

Vsup

The Vsup LED (green) illuminates when the motor DC power
supply is properly connected.

NI 9503 User Manual and Specifications | © National Instruments | 21

User

You can define the User LED (yellow) to meet the needs of your
application. Use the User LED I/O node to turn this LED on and
off. Refer to the NI 9503 topic in the LabVIEW Help, available
by selecting Help»LabVIEW Help, for information about the
NI 9503 User LED I/O node.

Fault

Caution If the Fault LED is lit, determine the cause of

the fault and correct it before enabling the drive.

The Fault LED (red) illuminates when a fault occurs. A fault
disables the drive. Causes for fault are the following:

• Vsup undervoltage

Caution Vsup greater than 40 V will result in damage to

the NI 9503.

• Vsup overvoltage

• Overcurrent

22 | ni.com | NI 9503 User Manual and Specifications

Hot-Swap Behavior

The NI 9503 is always disabled when it is first inserted in the
chassis, regardless of whether Vsup is present or not. You can
enable the drive using the Enable Drive method in software. Refer
to the NI 9503 topic in the LabVIEW Help, available by selecting
Help»LabVIEW Help, for more information about enabling the
drive.

When the NI 9503 is removed from the chassis while it is enabled,
the power to the motor is removed and the motor decelerates to a
stop based on its own friction.

Sleep Mode

This module supports a low-power sleep mode. Support for sleep
mode at the system level depends on the chassis that the module is
plugged into. Refer to the chassis manual for information about
support for sleep mode. If the chassis supports sleep mode, refer
to the software help for information about enabling sleep mode.
Visit

ni.com/info and enter cseriesdoc for information about

C Series documentation.

NI 9503 User Manual and Specifications | © National Instruments | 23

Typically, when a system is in sleep mode, you cannot
communicate with the modules. In sleep mode, the system
consumes minimal power and may dissipate less heat than it does
in normal mode. Refer to the Specifications section for more
information about power consumption and thermal dissipation.

Cable Requirements for EMC Compliance

Select and install cables for the NI 9503 in accordance with the
following requirements:

• Do not tie the motor case to the NI 9503 chassis ground.

• Use only shielded cables to connect the NI 9503 to a motor and
a power supply.

• Terminate the motor and power supply cable shields to the
COM terminal of the NI 9503. In addition, terminate the cable
shields at the other end to either earth ground or the chassis of
the connected motor and/or power supply.

24 | ni.com | NI 9503 User Manual and Specifications

• Install a clamp-on ferrite bead onto both the motor cable and

Motor DC

Power

Supply

Phase A+
Phase A–
Phase B+
Phase B–

COM
Vsup

NI 9503

Shield

Ferrites

Motor

Vsup cable, as shown in Figure 11. Power to the module must
be off when adding ferrites.

Note The wire connecting the motor cable shield to

COM bypasses the ferrite as shown in Figure 11.

Figure 11. NI 9503 Cable Connection

NI 9503 User Manual and Specifications | © National Instruments | 25

Clamp-on ferrites must be connected to the motor cable and Vsup
cable as close to the module as possible with a full turn as shown
in Figure 12. Placing the ferrite elsewhere on the cable noticeably
impairs its effectiveness.

Figure 12. Installing a Ferrite

• Determine the clamp-on ferrite beads to install based on
twice the motor cable and Vsup cable diameter. Order the
appropriate ferrite beads from NI.

26 | ni.com | NI 9503 User Manual and Specifications

NI Part Number Aperture Size mm (inches)

781233-01 7.0 (0.275)

781233-02 10.2 (0.402)

777297-01 13.4 (0.528)

Specifications

The following specifications are typical for the temperature range

-40 to 70 °C unless otherwise noted. All voltages are relative to

COM unless otherwise noted.

Input/Output Characteristics

Motor DC power supply (Vsup) .......+9 to +30 VDC

Minimum phase inductance.............. 1 mH

Maximum phase inductance ............. 20 mH

Type .................................................. PWM

PWM frequency................................ 20 kHz

Current per phase.............................. 3 A RMS

(4.24 A peak)

NI 9503 User Manual and Specifications | © National Instruments | 27

Current reduction .............................. 0% to 99%

(software-selectable)

Microstepping selections .................. x2, 4, 8, 16, 32, 64, 128, 256

(software-selectable)

Vsup capacitance .............................. 750 μF

MTBF ............................................... Contact NI for Bellcore

MTBF specifications.

Drive Protection

Undervoltage..................................... <6 V

Caution Vsup greater than 40 V will result in damage

to the module.

Overvoltage....................................... >32 V

Power Requirements

Power consumption from chassis

Active mode ............................... 500 mW max

Sleep mode ................................. 2.5 mW max

28 | ni.com | NI 9503 User Manual and Specifications

Thermal dissipation (at 70 °C)

Active mode ............................... 1.5 W max

Sleep mode ................................. 2.5 mW max

Physical Characteristics

If you need to clean the module, wipe it with a dry towel.

Note For two-dimensional drawings and

three-dimensional models of the C Series module
and connectors, visit ni.com/dimensions and
search by module number.

Screw terminal wiring

Gauge ......................................... 12 to 24 AWG copper

conductor wire with 10 mm
(0.39 in.) of insulation
stripped from the end

Temperature rating ..................... 85 °C min.

Wires per screw terminal .................. One wire per screw terminal,

two when using 2-wire
ferrule

NI 9503 User Manual and Specifications | © National Instruments | 29

Ferrules ............................................. 0.25 mm2 to 2.5 mm

Torque for screw terminals ............... 0.5 to 0.6 N · m

(4.4 to 5.3 lb · in.)

Connector securement

Securement type ......................... Screw flanges provided

Torque for screw flanges ............ 0.2 N · m (1.8 lb · in.)

Weight............................................... 144 g (5.1 oz)

Safety

Safety Voltages

Connect only voltages that are within the following limits.

2

Channel-to-COM .............................. 0 to +30 VDC max,

Measurement Category I

Isolation

Channel-to-channel .................... None

Channel-to-earth ground

Continuous ........................... 60 VDC,

Measurement Category I

Withstand ............................. 1000 V

, verified by a 5 s

rms

dielectric withstand test

30 | ni.com | NI 9503 User Manual and Specifications

Measurement Category I is for measurements performed on
circuits not directly connected to the electrical distribution system
referred to as MAINS voltage. MAINS is a hazardous live electrical
supply system that powers equipment. This category is for
measurements of voltages from specially protected secondary
circuits. Such voltage measurements include signal levels, special
equipment, limited-energy parts of equipment, circuits powered by
regulated low-voltage sources, and electronics.

Caution Do not connect the NI 9503 to signals or use

for measurements within Measurement Categories II, III,
or IV.

Note Measurement Categories CAT I and CAT O

(Other) are equivalent. These test and measurement
circuits are not intended for direct connection to the
MAINs building installations of Measurement
Categories CAT II, CAT III, and CAT IV.

NI 9503 User Manual and Specifications | © National Instruments | 31

Hazardous Locations

U.S. (UL) .......................................... Class I, Division 2,

Groups A, B, C, D, T4;
Class I, Zone 2,
AEx nA IIC T4

Canada (C-UL) ................................. Class I, Division 2,

Groups A, B, C, D, T4;
Class I, Zone 2,
Ex nA IIC T4

Europe (DEMKO) ............................ Ex nA IIC T4 Gc

Power Supply Requirements

Safety and Hazardous Locations Standards

The NI 9503 is designed to meet the requirements of the following
standards of safety for electrical equipment for measurement,
control, and laboratory use:

• IEC 61010-1, EN 61010-1

• UL 61010-1, CSA 61010-1

• EN 60079-0:2012, EN 60079-15:2010

• IEC 60079-0: Ed 6, IEC 60079-15: Ed 4

32 | ni.com | NI 9503 User Manual and Specifications

• UL 60079-0: Ed 5, UL 60079-15: Ed 3

• CSA 60079-0:2011, CSA 60079-15:2012

Note For UL and other safety certifications, refer to the

product label or the Online Product Certification section.

Electromagnetic Compatibility

This product meets the requirements of the following EMC
standards for electrical equipment for measurement, control,
and laboratory use:

• EN 61326-1 (IEC 61326-1): Class A emissions; Industrial
immunity

• EN 55011 (CISPR 11): Group 1, Class A emissions

• AS/NZS CISPR 11: Group 1, Class A emissions

• FCC 47 CFR Part 15B: Class A emissions

• ICES-001: Class A emissions

Note For the standards applied to assess the EMC of

this product, refer to the Online Product Certification
section.

NI 9503 User Manual and Specifications | © National Instruments | 33

Note For EMC compliance, operate this device with

shielded cabling.

CE Compliance

This product meets the essential requirements of applicable
European directives as follows:

• 2006/95/EC; Low-Voltage Directive (safety)

• 2004/108/EC; Electromagnetic Compatibility Directive
(EMC)

• 94/9/EC; Potentially Explosive Atmosphere (ATEX)

Online Product Certification

Refer to the product Declaration of Conformity (DoC) for
additional regulatory compliance information. To obtain product
certifications and the DoC for this product, visit ni.com/

certification

, search by module number or product line,

and click the appropriate link in the Certification column.

34 | ni.com | NI 9503 User Manual and Specifications

Shock and Vibration

To meet these specifications, you must panel mount the system and
affix ferrules to the end of the screw terminal wires.

Operating vibration

Random (IEC 60068-2-64)......... 5 g

, 10 to 500 Hz

rms

Sinusoidal (IEC 60068-2-6) ....... 5 g, 10 to 500 Hz

Operating shock

(IEC 60068-2-27).............................. 30 g, 11 ms half sine,

50 g, 3 ms half sine,
18 shocks at 6 orientations

Environmental

National Instruments C Series modules are intended for indoor use
only. Refer to the manual for the chassis you are using for more
information about meeting these specifications.

Operating temperature

(IEC 60068-2-1, IEC 60068-2-2) .....-40 to 70 °C

Storage temperature

(IEC 60068-2-1, IEC 60068-2-2) .....-40 to 85 °C

Ingress protection.............................. IP 40

NI 9503 User Manual and Specifications | © National Instruments | 35

Operating humidity

(IEC 60068-2-56).............................. 10 to 90% RH,

noncondensing

Storage humidity

(IEC 60068-2-56).............................. 5 to 95% RH,

noncondensing

Maximum altitude............................. 2,000 m

Pollution Degree (IEC 60664).......... 2

Indoor use only.

Environmental Management

NI is committed to designing and manufacturing products in an
environmentally responsible manner. NI recognizes that
eliminating certain hazardous substances from our products is
beneficial to the environment and to NI customers.

For additional environmental information, refer to the Minimize
Our Environmental Impact web page at

ni.com/environment.

This page contains the environmental regulations and directives
with which NI complies, as well as other environmental
information not included in this document.

36 | ni.com | NI 9503 User Manual and Specifications

Waste Electrical and Electronic Equipment (WEEE)

⬉ᄤֵᙃѻક∵ᶧ᥻ࠊㅵ⧚ࡲ⊩ ˄Ё೑

RoHS

˅

Ё೑ᅶ᠋

National Instruments

ヺড়Ё೑⬉ᄤֵᙃ

ѻકЁ䰤ࠊՓ⫼ᶤѯ᳝ᆇ⠽䋼ᣛҸ

(RoHS)

DŽ݇Ѣ

National Instruments

Ё೑

RoHS

ড়㾘ᗻֵᙃˈ䇋ⱏᔩ

ni.com/environment/rohs_china

DŽ

(For information

about China RoHS compliance, go to

ni.com/

environment/rohs_china

.)

EU Customers At the end of the product life cycle,

all products must be sent to a WEEE recycling center.
For more information about WEEE recycling centers,
National Instruments WEEE initiatives, and compliance
with WEEE Directive 2002/96/EC on Waste and
Electronic Equipment, visit

weee

.

ni.com/environment/

NI 9503 User Manual and Specifications | © National Instruments | 37

Worldwide Support and Services

The National Instruments website is your complete resource for
technical support. At

ni.com/support you have access to

everything from troubleshooting and application development
self-help resources to email and phone assistance from
NI Application Engineers.

Visit

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