B-type LXI (LAN eXtensions for Instrument) arbitrary waveform generator

Abstract

The invention relates to a circuit of a B-type LXI (LAN eXtensions for Instrument) bus arbitrary waveform generator, in particular to a B-type LXI arbitrary waveform generator, which comprises a B-type LXI interface module, an arbitrary waveform generator function module and an LED indicating module. The B-type LXI interface module comprises an embedded processor circuit, an IEEE 1588 trigger management circuit, a FLASH storage circuit, a DDR (double date rate) dynamic storage circuit and an LAN (local area network) interface communication circuit. The arbitrary waveform generator function module comprises a bus interface circuit, an SDRAM (synchronous dynamic random access memory) storage circuit, an FPGA (field programmable gate array) control circuit, a time generation circuit, a DAC (digital to analog converter) conversion circuit, a filter circuit, a direct-current biasing circuit, an attenuator circuit, a high and low gain circuit and a calibration circuit, and one end of the bus interface circuit is connected with the B-type LXI interface module. The B-type LXI bus arbitrary waveform generator is based on the LXI bus standards.

Description

technical field [0001] The invention relates to a class B LXI bus arbitrary waveform generator circuit. Background technique [0002] Agilent and VXI Technology Corporation proposed a new instrument bus-LXI (LAN eXtensions for Instrumentation) in 2004. LXI instruments do not need a special backplane bus chassis and zero-slot controller, and directly use the standard LAN interface of a general-purpose PC, which greatly reduces development and application costs. And LAN is the industry's most stable and open industry standard with the longest life cycle and is still developing. It is easy for manufacturers to transplant existing instrument products to the LAN platform. The measurement and control system provides convenience. At the same time, the LXI bus standard defines the precise time synchronization function based on IEEE1588, and introduces the concept of time-based triggering for the first time in the field of test and measurement, making it easy to build a real-time t...

AI Technical Summary

Problems solved by technology

In this case, most of the existing signal sources cannot meet this demand

Especially in the distributed measurement and control system, the test instrument is required to have the function of remote program control. The existing buses such as GPIB, PCI / PXI, etc. cannot meet the requirements very well. The arbitrary waveform generator system of the LXI bus solves the standard ripple Arbitrary waveform generation, high signal bandwidth, easy to build distributed measurement and control systems, etc.

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