National Instrument GPIB-140A | Interface Bus (GPIB) interface card.

The National Instrument GPIB-140A is commonly referred to as a General Purpose Interface Bus (GPIB) interface card.

· GPIB interface: Following the IEEE 488 standard, it provides a standard GPIB interface that allows computers or other controllers to communicate with instruments with GPIB 

interfaces, such as oscilloscopes, signal generators, spectrum analyzers, etc. It is a parallel interface that supports multiple devices to be connected simultaneously, enabling 

one controller to control and exchange data with multiple instruments.

· Number of device connections: Generally, up to 14 instrument devices can be connected, depending on the specific configuration and load situation on the bus. This multi 

device connectivity capability enables it to have good scalability in testing and measurement systems, allowing users to integrate multiple instruments into one system for 

collaborative work

· The data transmission speed is relatively fast, usually reaching 1 Mbyte/s or higher, which can meet the data transmission needs between most instruments. In data intensive 

measurement and testing applications, it can quickly transmit measurement data and control instructions, improving testing efficiency.

· Support different data transmission modes, including block transmission, byte transmission, etc., making it convenient for users to flexibly choose transmission modes 

according to the needs of different instruments and measurement tasks.

· It has good electrical compatibility and can work stably under different voltages and electrical environments, suitable for various instruments and equipment in laboratories 

and industrial environments. It can ensure the reliability of data transmission in a wide voltage range and electrical noise environment, avoiding data errors or communication interruptions caused by electrical interference.

· Using standard GPIB cables for connection, the cable length can be adjusted as needed, but excessively long cables may affect transmission speed and signal quality. Users 

need to choose the appropriate cable length based on their actual situation.

· Instrument control and automation testing:

· In electronic testing laboratories, it can serve as a core communication interface to connect computers with various testing instruments, enabling remote control and 

automated testing of the instruments. For example, users can use this interface card to control an oscilloscope to collect signal waveforms, control a signal generator to 

generate signals of specific frequencies and amplitudes, and transmit data from multiple instruments to a computer for analysis and processing, achieving automated 

testing processes and improving testing efficiency and accuracy.

· In communication testing, different communication testing instruments (such as spectrum analyzers, network analyzers, etc.) can be integrated into one system, and 

coordinated operation and data exchange between instruments can be achieved through GPIB interface cards, which are used to test the performance of communication 

equipment, such as frequency, bandwidth, power and other parameters of wireless communication equipment.