OPERATING INSTRUCTIONS AND SPECIFICATIONS
NI 9403E
32-Channel, TTL Digital Input/Output Module
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NI 9403E Dimensions
The following figure shows the dimensions of the NI 9403E.
73.4 (2.89)
0.0 (0.00)
Figure 1. NI 9403E Dimensions in Millimeters (Inches)
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Connecting the NI 9403E
The NI 9403E has a 37-pin DSUB connector that provides
connections for the 32 digital input/output channels.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
DIO0
DIO1
DIO2
DIO3
DIO4
DIO5
DIO6
DIO7
COM
COM
DIO8
DIO9
DIO10
DIO11
DIO12
DIO13
DIO14
DIO15
RSVD
DIO16
DIO17
DIO18
DIO19
DIO20
DIO21
DIO22
DIO23
COM
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
COM
DIO24
DIO25
DIO26
DIO27
DIO28
DIO29
DIO30
DIO31
Figure 2. NI 9403E Pin Assignments
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Each channel has a DIO pin to which you can connect a digital
input or output device. The 32 DIO channels are internally
referenced to COM, so you can use any of the four COM lines as a
reference for the external signal.
You can independently configure each DIO channel in software for
input or output. The DIO channels have Schmitt trigger inputs and
are compatible with 5 V TTL logic devices. Each input channel
has hysteresis for improved performance with noisy and
non-monotonic input signals. Each channel also has a pull-down
resistor and includes overvoltage, overcurrent, and short-circuit
protection. Refer to the Specifications section for more information
about input thresholds and overvoltage protection. Refer to the
Overcurrent/Short-Circuit Protection section for more
information about overcurrent and short-circuit protection.
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Refer to Figure 3 for an illustration of several types of digital
devices connected to the NI 9403E.
DIO0 as Input
TTL Signal
Dev 1
DIO1 as Input
COM
+5 V
Dev 2
+5 V
LED
DIO2 as Output
Dev 3
NI 9403E
Figure 3. Connecting Digital Devices to the NI 9403E
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Overcurrent/Short-Circuit Protection
The overcurrent protection allows only a specified amount of
current through the output channels to protect the NI 9403E from
short circuits. If the NI 9403E goes into an overcurrent state, the
module sets all the DIO channels to high impedance for
approximately 280 milliseconds. When the channels are in this
state, the NI 9403E can accept new line direction configuration and
output state data but cannot pass valid input data to the software.
After the protection period, the NI 9403E automatically recovers to
the latest direction configuration and output state. If the
overcurrent condition still exists, the module again sets the
channels to high impedance. This cycle continues until the
overcurrent condition is removed. Refer to the Specifications
section for more information about the maximum output current.
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
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ni.com/info and enter cseriesdoc for information about
C Series documentation.
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.
Specifications
The following specifications are typical for the range –40 to 85 °C
unless otherwise noted. All voltages are relative to COM unless
otherwise noted.
Input/Output Characteristics
Number of channels..........................32 DIO channels
Input/output type...............................TTL, single-ended
Default power-on line direction........Input
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Digital logic levels
Input
Voltage .................................–0.25 to 5.25 V
High, VIH..............................2.2 V min
Low, VIL ...............................0.8 V max
Hysteresis, VH......................0.2 V min
Output
High, VOH.............................5.2 V max
Sourcing 100 μA ...........4.75 V min
Sourcing 2 mA...............4.4 V min
Low, VOL
Sinking 100 μA .............0.1 V max
Sinking 2 mA.................0.26 V max
Input current (0 V ≤ Vin ≤ 4.5 V)...... 250 μA max
Module output current1.....................64 mA max
Input capacitance ..............................30 pF
1 Module output current is the maximum guaranteed current that the module can drive
from all the I/O lines without going into an overcurrent state.
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Timing
Input
Setup time1...........................10 ns min
Hold time2 ............................60 ns min
Output
Propagation delay3 ...............330 ns max
Channel-to-channel skew4 ...265 ns max
1 Setup time is the amount of time input signals must be stable before reading from the
module.
2
Hold time is the amount of time input signals must be stable after initiating a read
from the module.
3
Propagation delay is the amount of time after writing to the module that the output
signals become valid.
4
Channel-to-channel skew is the amount of time between the first output signal
updating and the last output signal updating.
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Update/transfer time1
cRIO-9151 R Series
Expansion chassis ................8 μS max
All other chassis...................7 μS max
Direction change time1 ...............18 μS max
Overvoltage protection
Channel-to-COM.............................. 30 V max on up to
8 channels at a time;
however, continued use at
this level will degrade the life
of the module.
1 The update/transfer and direction change times are valid when the module is used in
a CompactRIO system. When used in other systems, driver software and system
latencies impact these times.
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MTBF ...............................................763,325 hours at 25 °C;
Bellcore Issue 2, Method 1,
Case 3, Limited Part Stress
Method
Note Contact NI for Bellcore MTBF specifications
at other temperatures or for MIL-HDBK-217F
specifications.
Power Requirements
Power consumption from chassis
Active mode ...............................1 W max
Sleep mode .................................25 μW max
Thermal dissipation (at 70 °C)
Active mode ...............................1 W max
Sleep mode .................................25 μW max
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Physical Characteristics
If you need to clean the module, wipe it with a dry towel.
Weight...............................................47 g (1.7 oz)
Safety
Safety Voltages
Connect only voltages that are within the following limits.
Channel-to-COM.............................. 30 V max on up to
8 channels at a time,
Measurement Category I
Isolation
Channel-to-channel ....................None
Channel-to-earth ground
Continuous...........................60 VDC,
Measurement Category I
Withstand .............................1,000 Vrms, verified by a 5 s
dielectric withstand test
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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 9403E to signals or use
for measurements within Measurement Categories II,
III, or IV.
Safety Standards
This product meets the requirements of the following standards of
safety for electrical equipment for measurement, control, and
laboratory use when installed in a suitable enclosure:
•
•
IEC 61010-1, EN 61010-1
UL 61010-1, CSA 61010-1
Note For UL and other safety certifications, refer to the
product label or the Online Product Certification section.
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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.
Environmental
National Instruments C Series modules are intended for indoor use
only but may be used outdoors if installed in a suitable enclosure.
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 85 °C
Storage temperature
(IEC 60068-2-1, IEC 60068-2-2) .....–40 to 85 °C
Operating humidity
(IEC 60068-2-56)..............................10 to 90% RH,
noncondensing
Storage humidity
(IEC 60068-2-56)..............................5 to 95% RH,
noncondensing
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Maximum altitude.............................2,000 m
Pollution Degree (IEC 60664)..........2
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 NI and the
Environment 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.
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Waste Electrical and Electronic Equipment (WEEE)
EU Customers At the end of the life cycle, all products
must be sent to a WEEE recycling center. For more
information about WEEE recycling centers and National
Instruments WEEE initiatives, visit ni.com/
environment/weee.
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Where to Go for Support
The National Instruments Web site 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.
National Instruments corporate headquarters is located at
11500 North Mopac Expressway, Austin, Texas, 78759-3504.
National Instruments also has offices located around the world to
help address your support needs. For telephone support in the
United States, create your service request at ni.com/support
and follow the calling instructions or dial 512 795 8248. For
telephone support outside the United States, contact your local
branch office:
Australia 1800 300 800, Austria 43 662 457990-0,
Belgium 32 (0) 2 757 0020, Brazil 55 11 3262 3599,
Canada 800 433 3488, China 86 21 5050 9800,
Czech Republic 420 224 235 774, Denmark 45 45 76 26 00,
Finland 358 (0) 9 725 72511, France 01 57 66 24 24,
Germany 49 89 7413130, India 91 80 41190000,
Israel 972 3 6393737, Italy 39 02 41309277, Japan 0120-527196,
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Korea 82 02 3451 3400, Lebanon 961 (0) 1 33 28 28,
Malaysia 1800 887710, Mexico 01 800 010 0793,
Netherlands 31 (0) 348 433 466, New Zealand 0800 553 322,
Norway 47 (0) 66 90 76 60, Poland 48 22 3390150,
Portugal 351 210 311 210, Russia 7 495 783 6851,
Singapore 1800 226 5886, Slovenia 386 3 425 42 00,
South Africa 27 0 11 805 8197, Spain 34 91 640 0085,
Sweden 46 (0) 8 587 895 00, Switzerland 41 56 2005151,
Taiwan 886 02 2377 2222, Thailand 662 278 6777,
Turkey 90 212 279 3031, United Kingdom 44 (0) 1635 523545
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