8712ES, 8712ET: 300 kHz to 1.3 GHz 8714ES, 8714ET: 300 kHz to 3.0 GHz Internal synthesized source with 1 Hz resolution ES Models have built-in S-Parameter Test Set ET Models have built-in Transmission/Reflection Test Set The 8712/14ES features an S-parameter test set with full two-port vector-error correction, providing complete and accurate measurements of device S-parameters. Two independent channels can measure and display two parameters such as S21 (transmission) and S11 (reflection) in a variety of formats including delay and SWR, on retangular, polar or Smith-chart displays. The 8712/14ET features a built-in transmission/reflection test set with a full range of magnitude and phase measurements. Two independent channels can measure and display two device parameters, such as transmission and reflection response, in a variety of formats including complex impedance, SWR, and delay, on rectangular, polar or Smith-chart displays. These analyzers also employ advanced vector-error-correction techniques to enhance measurement accuracy.