Agilent Technologies e4419b Standard Uncertainty uxi, Table A-1 Standard Uncertainty Results

Measurement Uncertainty Analysis – Instrument Accuracy Test

Measurement Introduction

Standard Uncertainty u(xi):

Table A-1 shows the standard deviation of the 30 readings from the DUT at various power levels.

Table A-1: Standard Uncertainty Results

Power Level	Standard Deviation of 30	Conversion to Linear Units
	Readings	Standard Uncertainty
u(X(-25)) 3.162uW	0.0132dB	0.0097uW
u(X(-20)) 10uW	0.0038dB	0.009uW
u(X(-15)) 31.62uW	0.0013dB	0.0095uW
u(X(-10)) 100uW	0.0015dB	0.035uW
u(X(-5)) 316.2uW	0.0004dB	0.03uW
u(X(0)) 1mW	0.0003dB	0.00007mW
u(X(5)) 3.16227mW	0.0003dB	0.00022mW
u(X(10)) 10mW	0.0003dB	0.000690mW
u(X(15) 31.62277mW	0.0003dB	0.0022mW
u(X(20)) 100mW	0.0004dB	0.0092mW

The distributions are all normal.

3458A DMM Uncertainty:

The uncertainty of the voltage measured by the 3458A is:

Error = (ppm of reading + ppm of range) + (factory traceability) + (temperature coefficient)

Conditions: 1 Year Calibration and temperature variance +/-5°C with ACAL on dc volts.

Reference: 3458A Operating Manual Appendix A

Factory Traceability: From 6ppm to 0.5ppm Standard Uncertainty depending on range.

Agilent E4416A/E4417A Service Guide A-5