Agilent Technologies E1441A user service Table D-10.Distortion Verification, Appendix D

Distortion Verification

This test checks the Harmonic Distortion at selected frequencies and harmonics. This test requires the use of a spectrum analyzer with dynamic range, frequency range, and resolution bandwidth adequate for the measurement.

Select each function generator output in the table below. Use a spectrum analyzer connected to the function generator output. Set the fundamental frequency reference to 0 dB and measure the 2nd through 5th harmonic frequencies relative to this reference. This test is a 50 Ω output termination test.

Table D-10. Distortion Verification

							Measurement
		Agilent E1441A
							harmonic
	Function	Out	Ampl	Freq	Fundamental	2nd	3rd	4th	5th	Amt below
		Terma								reference
O	Sine wave	50 Ω	1.1 Vrms	20.00 kHz	reference	40 kHz	60 kHz	80 kHz	100 kHz	> 70 dB
O	Sine wave	50 Ω	1.1 Vrms	100.00 kHz	reference	200 kHz	300 kHz	400 kHz	500 kHz	> 60 dB
O	Sine wave	50 Ω	1.1 Vrms	1.00 MHz	reference	2 MHz	3 MHz	4 MHz	5 MHz	> 45 dB
O	Sine wave	50 Ω	1.1 Vrms	15.00 MHz	reference	30 MHz	45 MHz	60 MHz	75 MHz	> 35 dB

a.The E1441A has a fixed output impedance of 50 Ω on the "Output" terminal. Use the OUTPut:LOAD 50 INFinity MIN MAX command to set the output termination. HIGH Z assumes no load on output. 50 Ω assumes a 50 Ω

± 0.1 Ω load on output.

Appendix D Service Procedures 173