OPERATING INSTRUCTIONS AND SPECIFICATIONS NI 9403E 32-Channel, TTL Digital Input/Output Module
This document describes how to use the National Instruments 9403E and includes dimensions, pin assignments, and specifications for the NI 9403E. 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 ni.com/info and enter cseriesdoc for information about C Series documentation.
NI 9403E Dimensions The following figure shows the dimensions of the NI 9403E. 73.4 (2.89) 58.4 (2.30) 66.0 (2.60) 0.0 (0.00) 26.7 (1.05) 0.0 (0.00) Figure 1. NI 9403E Dimensions in Millimeters (Inches) © National Instruments Corp.
Connecting the NI 9403E The NI 9403E has a 37-pin DSUB connector that provides connections for the 32 digital input/output channels. DIO16 DIO17 DIO18 DIO19 DIO20 DIO21 DIO22 DIO23 COM COM DIO24 DIO25 DIO26 DIO27 DIO28 DIO29 DIO30 DIO31 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 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 Figure 2.
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.
Refer to Figure 3 for an illustration of several types of digital devices connected to the NI 9403E. DIO0 as Input Dev 1 TTL Signal DIO1 as Input +5 V Dev 2 +5 V LED COM DIO2 as Output NI 9403E Dev 3 Figure 3. Connecting Digital Devices to the NI 9403E NI 9403E Operating Instructions and Specifications 6 ni.
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.
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.
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)......
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.
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.
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 ............
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 .......
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.
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.
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.
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