Description
The product in question is a C Series Voltage and Current Input Module, identified by part numbers 781068-01, 785040-01, 781068-02, and 199272C-01L. Manufactured by National Instruments, this module is designed to cater to a wide range of data acquisition and measurement needs.
It features 16 analog input channels, which are evenly divided between 8 voltage and 8 current inputs. This design allows for versatile data collection from various sensors and signals. The voltage range capability of this module is ±10.2 V, while the current range is ±21.5 mA, offering a broad spectrum for measurement.
Remarkably, this module boasts a high resolution of 24 bits, ensuring precise data acquisition. It is capable of a maximum sample rate of 500 Samples per second (S/s), which is suitable for many moderate-speed signal capturing applications.
From an electrical standpoint, the voltage input impedance is exceptionally high, greater than 1 GΩ, minimizing the load on the measured circuit. Conversely, the current input impedance is approximately 85 Ω, optimized for current sensing applications. Another notable feature is its noise rejection capability at 50/60 Hz, which is crucial for achieving accurate measurements in environments with electrical noise.
For connectivity, this module supports terminal connections via a 37-pin DSUB and a 36-pin Spring Terminal, providing flexibility in wiring and installation. It accommodates a wire gauge range from 26 AWG to 16 AWG, allowing for a variety of wire sizes to be used. The module weighs 5.7 oz with the Spring Terminal and 5.1 oz with the DSUB connector, making it a lightweight addition to any setup.
Lastly, it is designed to operate within a wide temperature range of -40 to 70 °C, ensuring reliable performance under extreme conditions. This combination of features makes the C Series Voltage and Current Input Module an essential tool for engineers and researchers who demand high accuracy, flexibility, and reliability in their measurement systems.
| Specification | Details |
|---|---|
| Part Numbers | 781068-01, 785040-01, 781068-02, 199272C-01L |
| Module Type | C Series Voltage and Current Input Module |
| Manufacturer | National Instruments |
| Channels | 16 analog input channels (8 voltage and 8 current) |
| Voltage Range | ±10.2 V |
| Current Range | ±21.5 mA |
| Resolution | 24 bit |
| Maximum Sample Rate | 500 S/s |
| Voltage Input Impedance | >1 GΩ |
| Current Input Impedance | ~85 Ω |
| Noise Rejection | 50/60 Hz |
| Terminal Connections | 37-pin DSUB, 36-pin Spring Terminal |
| Wire Gauge Range | 26 AWG to 16 AWG |
| Weight (Spring Terminal / DSUB) | 5.7 oz / 5.1 oz |
| Operating Temperature | -40 to 70 °C |



