Description
The National Instruments NI-9757 (Part Number: 782079-01) is an Oxygen Sensor Interface Module compatible with Bosch LSU 4.2, LSU 4.9 wideband exhaust oxygen sensors, and four differential narrowband oxygen sensors. It features user calibration capabilities for stoichiometry versus direct momentum tailored to a range of fuel types, with default settings for gas and diesel.
With its ability to provide precise O2 measurement reporting in terms of A/F, F/A, Lambda, and Phi, the module ensures accurate monitoring and analysis. Its heater control circuits are fully functional and protected by fuses to ensure reliability and safety. The module is designed to maintain specified current limitations for switching output channels or sourcing the output load, and it incorporates overcurrent protection that automatically reduces voltage or shuts the module off to prevent damage.
Connection to the module is facilitated through a DB-37 connector, which includes BATT (10) and GND (29) terminals, allowing for a versatile power supply range of 6 V to 32 V, while the operating voltage for LSU 4.x sensors is restricted to 8 V to 16.5 V. The NI-9757 also offers reverse battery protection up to -18 V. In terms of power consumption, the module is economical, requiring a maximum of 100 mA without sensors connected, but capable of supporting sensor heaters with power requirements of up to 12 A when all channels are active.
| Attribute | Specification |
|---|---|
| Part Number | 782079-01 |
| Compatible Sensors | Bosch LSU 4.2, LSU 4.9 wideband exhaust oxygen sensors, and four differential narrowband oxygen sensors |
| Driver Calibration | Allows user calibration of stoichiometry versus direct momentum for various fuel types (gas/diesel default) |
| O2 Measurement Reporting | A/F, F/A, Lambda, Phi |
| Heater Control Circuits | Functional, fuse-protected |
| Output Current Limitation | Specified current for switching output channels or sourcing the output load |
| Overcurrent Protection | Module reduces voltage or shuts off if overcurrent state is detected |
| Connector Terminals | DB-37 connector with terminals BATT (10) and GND (29) |
| Power Supply Range | Accepts power from 6 V to 32 V |
| Operating Voltage for LSU 4.x Sensors | 8 V to 16.5 V |
| Reverse Battery Protection | Up to -18 V |
| Power Consumption (without sensors) | 100 mA maximum |
| Sensor Heaters Power Requirement | Up to 12 A if all channels are in use |
Question 1: What types of oxygen sensors is the NI-9757 interface module compatible with and what are its capabilities regarding heater control circuits and power supply range?
Answer 1: The National Instruments NI-9757 offers user calibration capabilities that allow for adjusting stoichiometry versus direct momentum tailored to a range of fuel types, with default settings specifically for gas and diesel.
Question 2: What calibration capabilities does the National Instruments NI-9757 offer for adjusting stoichiometry in relation to a variety of fuel types?
Answer 2: The National Instruments NI-9757 Interface Module is compatible with Bosch LSU 4.2 and LSU 4.9 wideband exhaust oxygen sensors, as well as four differential narrowband oxygen sensors, and it offers a power supply range of 6 V to 32 V with features like overcurrent protection, reverse battery protection up to -18 V, and fuses for heater control circuit protection.
Question 3: What types of oxygen sensors are compatible with the National Instruments NI-9757 Interface Module, and what are its capabilities in terms of power supply range and protection features?
Answer 3: The National Instruments NI-9757 Oxygen Sensor Interface Module is equipped to interface with Bosch LSU 4.2 and 4.9 wideband oxygen sensors, as well as four differential narrowband sensors, offering precise O₂ measurement and user calibration for various fuel types; it includes safety features like fuse-protected heater control circuits and overcurrent protection to prevent damage, and accommodates a versatile power supply voltage range of 6 V to 32 V for the module, with a specific operating voltage of
Question 4: What types of oxygen sensors is the National Instruments NI-9757 compatible with, and what are its key features for ensuring accurate O₂ measurement and safety?
Answer 4: The NI-9757 interface module is compatible with Bosch LSU 4.2 and LSU 4.9 wideband exhaust oxygen sensors as well as four differential narrowband oxygen sensors, featuring fully functional heater control circuits with fuse protection, and it accommodates a versatile power supply range of 6 V to 32 V.
Question 5: What are the capabilities and safety features of the National Instruments NI-9757 Oxygen Sensor Interface Module, and how does it accommodate different power supply voltage requirements?
Answer 5: The National Instruments NI-9757 is compatible with Bosch LSU 4.2 and LSU 4.9 wideband exhaust oxygen sensors, as well as four differential narrowband oxygen sensors, and it ensures accurate O₂ measurement with user calibration capabilities and reporting in A/F, F/A, Lambda, and Phi terms; for safety, it includes heater control circuits with fuses, overcurrent protection, and reverse battery protection up to -18 V.
