Description

NI  PXI-2570  PXI relay module

Basic parameters:
Number of channels: 40.
Relay type: Single-pole double-throw (SPDT) latch relay.
Switching bandwidth: 40MHz.
Maximum switching voltage: 100V between channels and between channels and ground.
Pulse withstand voltage: It can withstand a pulse voltage of up to 500V.

Working environment
Operating temperature range: 0°C to 55°C.
Storage temperature range: -20°C to 70°C.
Vibration during operation: Within the frequency range of 5 to 500Hz, the random vibration during operation is 0.31gRMS.
Non-operational vibration: Within the frequency range of 5 to 500Hz, the random vibration during non-operation is 2.46gRMS.

Functional features: It has an automatic scanning function, capable of downloading up to 32,000 associated lists. It traverses the lists through event-triggered loops without the intervention of the host processor. If digital filtering is disabled, trigger pulses with a width of less than 150ns can be sensed, and close synchronization with other devices can also be achieved through hardware triggering.

Compatible software: Programming control can be carried out using the NI-SWITCH driver (IVI compatible), and it is compatible with software such as Visual Basic, C/C++, LabVIEW, Measurement Studio and LabWindows/CVI.
Certification: Complies with UL and CE standards, and the measurement category is Class I.

Application
Satellite thermal control system testing: In the testing of satellite thermal control systems, PXI high-density and high-precision resistance modules can be used to simulate the temperature sensors inside the satellite. The PXI-2570 module can be used for signal path switching. By connecting the resistance modules of different channels with the measurement equipment, it simulates 36 aerostatic thermal regulators with a temperature range from -80 ℃ to + 55℃, helping to test the response of the thermal control system to different temperatures and ensuring the normal operation of the satellite thermal control system.

Single-board test of the brake control unit of EMU: In the single-board test of the brake control unit (BCU) of EMU, a data acquisition system based on PXI bus can be adopted, among which the PXI-2570 module can play the role of switch switching. Through software control, it can cooperate with the data acquisition board card to output analog, digital and other signals to each circuit board of the BCU, providing working excitation for the circuit boards. At the same time, it participates in the switching of the signal acquisition path and helps complete 17 test items in 10 major categories such as conduction tests and voltage measurements for various single boards such as power boards and interface boards. Realize the functional test and fault diagnosis of the BCU single board.