Description
The 779624-01 is a part of the PXI Multifunction DAQ category, specifically model PXI-6238. This model is designed for a wide range of applications, offering an impressive set of features tailored for versatile data acquisition tasks. It boasts an isolation feature described as Iso (Cur: 8 AI, 2 AO; 30V: 6 DI, 4 Sourcing DO), enhancing the device’s safety and reliability in various operating environments.
With 16 Analog Inputs (AI), each providing 16 bits of resolution at a sampling rate of 1.25 MS/s, users can expect precise and rapid data capture. Additionally, the unit includes 2 Analog Outputs (AO), allowing for efficient signal output to other devices or systems. The PXI-6238 also features 6 Digital Inputs (DI) and 4 Digital Outputs (DO), with the DOs being sourcing type, further broadening its application scope.
An interesting aspect of the PXI-6238 is its EEPROM, which stores factory-calibration constants, alongside a user-modifiable area for self-adjustment. This flexibility ensures that the device can be finely tuned to meet specific application requirements. In terms of sensor compatibility, this multifunction DAQ supports a wide array, including strain gauges, thermocouples, thermistors, angular encoders, linear encoders, and Resistance Temperature Detectors (RTDs), making it incredibly versatile.
The device integrates a single Analog-to-Digital Converter (ADC), ensuring that analog signals are accurately converted to digital format. Its multiplexers (MUX) are designed to route one AI channel at a time to the ADC, optimizing the conversion process. Moreover, the inclusion of an NI-PGIA (Programmable Gain Instrumentation Amplifier) highlights the device’s capability to ensure maximum ADC resolution utilization, significantly enhancing measurement accuracy and performance.
| Specification | Details |
|---|---|
| Part Number | 779624-01 |
| Category | PXI Multifunction DAQ |
| Model | PXI-6238 |
| Description | Iso (Cur: 8 AI, 2 AO; 30V: 6 DI, 4 Sourcing DO) |
| Analog Inputs (AI) | 16 (16 Bits, 1.25 MS/s) |
| Analog Outputs (AO) | 2 |
| Digital Inputs (DI) | 6 |
| Digital Outputs (DO) | 4 (Sourcing) |
| EEPROM | Factory-calibration constants stored; User modifiable area for self-adjustment |
| Sensors Supported | Strain gauges, Thermocouples, Thermistors, Angular Encoders, Linear Encoders, Resistance Temperature Detectors (RTDs) |
| ADC | One analog-to-digital converter |
| Multiplexers (MUX) | Routes one AI channel at a time to the ADC |
| NI-PGIA | Programmable gain instrumentation amplifier to ensure maximum ADC resolution utilization |
Question 1: What is the sampling rate of the PXI-6238’s AI?
Answer 1: 1.25 MS/s
Question 2: Does PXI-6238 support thermocouples?
Answer 2: Yes, it supports thermocouples.
Question 3: How many analog outputs does PXI-6238 have?
Answer 3: 2 AO
Question 4: What type of EEPROM does PXI-6238 include?
Answer 4: Factory-calibration constants and user area.
Question 5: What isolation feature does PXI-6238 have?
Answer 5: Iso for 8 AI, 2 AO, 6 DI, 4 DO




