Keysight / Agilent / HP 8981B Vector Modulation Analyser Vector Modulation Analyser HP_8981B 8981B TMG Test Equipment
Keysight / Agilent / HP

Keysight / Agilent / HP 8981B Vector Modulation Analyser

Keysight / Agilent / HP logo

Keysight / Agilent / HP 8981B Vector Modulation Analyser

The HP 8981B vector modulation analyser (and HP 8780A/8782B vector signal generators) can be used to adjust and troubleshoot I/Q modulators, demodulators, and I/Q modulated signals used in digital mobile radio, microwave radio, and the transmission of digital video. The analysers can be connected to the I/Q outputs of a demodulator in a receiver, or to IF test points. Once connected, the 8981B displays constellations, EYE diagrams, and vector diagrams of digital modulation formats such as QPSK, 16QAM, 64QAM, and 256QAM. The analyser also makes statistical measures of system quality such as closure, lock angle error, and quadrature error. Through these "constellation analysis" techniques, transmission quality can be measured and monitored to detect degradations in the transmission link before link bit error rates reach unacceptable levels.
[HP_8981B]
Exec Time: 0.089872 Seconds Memory Usage: 4.073608 Megabytes