Description
The National Instruments PXI-2720 is a PXI Programmable Resistor Module that is distinguished by its part number 781985-20. It falls under the category of PXI Switches and is designed to facilitate a variety of testing and simulation scenarios. This module features a 10-Channel configuration, each capable of handling a maximum power of 0.25 Watts. It operates with an 8-Bit resolution, enabling precise adjustments in 1Ω steps across a range of 1 to 255 Ω per channel.
The accuracy of the resistors within this module is remarkably high, at 0.5%, with a temperature coefficient of resistance (TCR) of 100 ppm, ensuring reliable performance across various temperatures. Each channel can support a maximum voltage of 60 VDC or 30 VACrms, CAT I (Channel-to-channel and Channel-to-ground), and can carry a current of up to 0.3 Amperes.
The PXI-2720 utilizes Reed relays for its switching mechanism, which have an operating/release time of 250 µs. The relay life expectancy varies with the load; under low power load (<50mW), the relays can perform up to 1 × 108 cycles, while at full power load (<250 mW), they can achieve up to 1 × 106 cycles. This module is equipped with a 37-pin D-SUB connector and 2 × 2 Micro-Fit connector DMM ports for connectivity.
Designed as a 3U, one slot, PXI module, it has a compact form factor suitable for integrating into standard PXI racks. Despite its extensive functionality, the module maintains a modest power consumption of 11 Watts, making it an efficient choice for a wide range of applications where programmable resistance is required.
| Specification | Detail |
|---|---|
| Part Number | 781985-20 |
| Category | PXI Switches |
| Model | PXI-2720 |
| Description | National Instruments PXI-2720 PXI Programmable Resistor Module |
| Channels | 10-Channel |
| Bit | 8-Bit |
| Maximum Power per Channel | 0.25 Watts |
| Resistor Accuracy | 0.5% |
| Temperature Coefficient of Resistance (TCR) | 100 ppm |
| Resolution | 1Ω steps |
| Range | 1 to 255 Ω (per channel) |
| Maximum Voltage | 60 VDC, 30 VACrms, CAT I (Channel-to-channel and Channel-to-ground) |
| Current per Channel | 0.3 Amperes |
| Relay Type | Reed relays |
| Operating/Release Time | 250 µs |
| Relay Life at Low Power Load (<50mW) | 1 × 108 cycles |
| Relay Life at Full Power Load (<250 mW) | 1 × 106 cycles |
| Connectors | 37-pin D-SUB connector, 2 × 2 Micro-Fit connector DMM ports |
| Size | 3U, one slot, PXI module |
| Power Consumption | 11 Watts (
Question 1: What is the resolution of the PXI-2720? Question 2: What’s the accuracy of PXI-2720’s resistors? Question 3: How many channels does the PXI-2720 have? Question 4: What is the maximum voltage per channel for PXI-2720? Question 5: How much power does the PXI-2720 consume? |
