Description
The National Instruments NI-9757 is a C Series Oxygen Sensor Interface Module designed for powertrain control components. It has been notably crafted to interface seamlessly with Bosch LSU 4.2 or LSU 4.9 wideband exhaust oxygen sensors as well as four differential narrowband oxygen sensors, providing a versatile solution for oxygen sensing needs.
It is important to note that there was an error in the provided part number within the description. The correct part number for this module is 782079-01, not the initially stated 159081A-01L. This correction ensures accuracy in identification and procurement.
The NI-9757 module delivers outputs for oxygen measurement in various forms, including Air/Fuel Ratio (A/F), Fuel/Air Ratio (F/A), Lambda, and Phi, making it a comprehensive tool for analyzing and controlling powertrain systems. Additionally, the module is equipped with functional, fuse-protected heater control circuits, which are critical for the operation of the oxygen sensors.
The power source range for the NI-9757 is quite broad, accepting input voltages from 6 V to 32 V. However, the operating range specifically for LSU 4.x sensors is narrower, at 8 V to 16.5 V. This specificity ensures that the sensors operate within their optimal voltage range for accurate measurements.
Protection features of the NI-9757 include reverse battery protection up to -18 V, safeguarding the module against incorrect power supply connections. The power consumption of the module without sensors connected is capped at a maximum of 100 mA, demonstrating efficient energy use. When all channels are in use, the maximum sensor heater current can reach up to 12 A, providing ample power for sensor operation.
In summary, the National Instruments NI-9757 module is a sophisticated component for interfacing with wideband and narrowband oxygen sensors, offering detailed outputs, efficient power use, and protective features for reliable operation in powertrain control systems.
| Specification | Details |
|---|---|
| Part Number | 159081A-01L (Incorrect in description, correct part number: 782079-01) |
| Model | NI-9757 |
| Category | Powertrain Control Components |
| Description | National Instruments NI-9757 C Series Oxygen Sensor Interface Module |
| Compatible Sensors | Bosch LSU 4.2 or LSU 4.9 wideband exhaust oxygen sensors and four differential narrowband oxygen sensors |
| O2 Measurement Outputs | A/F, F/A, Lambda, and Phi |
| Heater Control Circuits | Functional, fuse-protected |
| Power Source Range | 6 V to 32 V |
| Operating Range for LSU 4.x Sensors | 8 V to 16.5 V |
| Protection | Reverse battery protected to -18 V |
| Power Consumption without Sensors | 100 mA maximum |
| Max Sensor Heater Current | 12 A if all channels in use |
Question 1: What is the correct part number for the NI-9757 module?
Answer 1: 782079-01
Question 2: Which Bosch sensors can the NI-9757 interface with?
Answer 2: Bosch LSU 4.2/4.9 wideband and differential narrowband.
Question 3: What is the operating voltage range for LSU 4.x sensors with NI-9757?
Answer 3: 8 V to 16.5 V
Question 4: What outputs does the NI-9757 provide?
Answer 4: A/F, F/A, Lambda, and Phi.
Question 5: What protection feature does the NI-9757 include?
Answer 5: Reverse battery protection up to -18 V.
