National Instruments NI 9754 User manual

USER MANUAL
NI 9754
NI Powertrain Controls Engine-Synchronous TTL Output Module
Contents
Introduction .............................................................................................................................. 2
Pinout........................................................................................................................................ 2
Powering the Module................................................................................................................ 3
Platform Compatibility ............................................................................................................. 3
ESTTL Outputs......................................................................................................................... 4
Digital Output Characteristics ..................................................................................................4
Physical Specifications and Characteristics ............................................................................. 4
Compliance and Certifications ................................................................................................. 5

2|ni.com |NI 9754 User Manuall
Introduction
The National Instruments 9754 Engine-Synchronous TTL (ESTTL) Output Module provides
eight channels of high-speed digital output that can be used for engine synchronous signaling
and control of external drive circuits.
Features:
• Sends commands to external custom driver circuits or smart actuators with built-in driver
circuits
• 200 ns output resolution
• 8-channel TTL output
• LabVIEW FPGA support for high-speed engine-synchronous, multi-pulse fuel or spark
control
Pinout
Figure 1. NI 9754 Pin Assignments
COM
NC
COM
COM
NC
COM
COM
NC
COM
COM
NC
COM
COM
DO 0
NC
DO 1
DO 2
NC
DO 3
DO 4
NC
DO 5
DO 6
NC
DO 7
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25

NI 9754 User Manual |© National Instruments |3
Powering the Module
The NI 9754 requires power from the CompactRIO backplane male high density D-SUB 15-pin
(HD15) connector, which mates with the female HD15 connector on the NI 9754. This power
source provides a regulated 5 V and ground to various digital logic functions within the NI 9754.
The CompactRIO 5 V source is active whenever the CompactRIO or R Series Expansion
Chassis is properly powered. You can power the NI 9754 only at the HD15 connector by
plugging it into a CompactRIO or R Series Expansion Chassis.
Platform Compatibility
NI Powertrain Control modules require a hardware support system to function. You cannot use
the modules independently or interfaced with third-party devices at the backplane HD15
connector. NI Powertrain Control modules are compatible with the following National
Instruments platforms:
• CompactRIO, which consists of a CompactRIO controller, chassis, or integrated
controller/chassis.
• NI PXI, which consists of any NI PXI chassis, NI PXI RT controller, and NI PXI-78xxR
R Series FPGA card. The NI Powertrain Control modules insert into an NI R Series
expansion chassis. Connect an NI R Series expansion chassis to the NI PXI FPGA card
using a SHC68-68-RDIO cable.
Note NI Powertrain Control modules are not compatible with the National
Instruments CompactDAQ chassis.
You can use NI Powertrain Control modules with NI cRIO-911x, NI cRIO-907x, and NI R Series
Expansion systems under the following conditions:
• Leave one empty chassis slot between NI Powertrain Control modules and other
NI modules.
• Maintain an ambient system operating temperature of 0 °C to 45 °C.
Note Typical specifications of National Instruments modules might not apply when
used in a system with NI Powertrain Control modules.
Note National Instruments guarantees warranted specifications for all National
Instruments modules except thermocouple modules when used in a system with
NI Powertrain Control modules.
Note National Instruments recommends the NI 9214 for thermocouple
measurements in CompactRIO systems using NI Powertrain Control modules.
Note NI Powertrain Control modules do not support Scan Interface mode,
auto-detection, or ID mode.

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ESTTL Outputs
Each TTL output channel has a DO pin to connect a device that accepts a digital command signal
from 0 V to 5 V. The eight output channels are internally referenced to COM, so you can use
any of the nine COM lines as a reference for the external signal. Each channel has a pull-down
resistor and includes overcurrent, overvoltage, and short-circuit protection.
Overcurrent Protection
The NI 9754 allows only a specified amount of current for switching output channels or sourcing
the output load. If the NI 9754 goes into an overcurrent state by exceeding the specified
maximum switching frequency or the output load, the power supply begins to drop in voltage
until it completely turns off or the overcurrent condition is removed. When the NI 9754 is in this
state, it can accept new output state data.
Overvoltage Protection
The TTL outputs of the NI 9754 are temporarily protected from +/-30 V one channel at a time.
Continued exposure to overvoltage conditions will degrade the life of the NI 9754.
Digital Output Characteristics
Digital Output Logic Levels at 10 mA loads
High ..................................................................4.0 V to 5.0 V
Low ................................................................... 0.1 V to 0.4 V
Physical Specifications and Characteristics
Weight ...............................................................170 g
Maximum Altitude............................................2000 m
Maximum Ambient Temperature......................70 ºC
Operating Humidity ..........................................10% to 90% RH, noncondensing
Pollution Degree ...............................................2
Ingress Protection .............................................IP40
For indoor use only.
If you need to clean the module, wipe it with a dry towel.

NI 9754 User Manual |© National Instruments |5
Safety Guidelines
Caution Do not operate the NI 9754 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.
Compliance and Certifications
Safety
This product meets 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
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
Caution When operating this product, use shielded cables and accessories.
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)
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.

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