Agilent Technologies E1441A AC Amplitude Adjustment 50 Ohms, Table D-15.50 Ohm Adjustment Setup

AC Amplitude Adjustment (50 Ohms)

1.The function generator stores sixteen calibration constants related to 50 Ω output. The constants are calculated from the adjustment value entered. The calibration constants are stored following completion of SETUP 49 and the calibration procedure may be aborted after that point. No calibration constants are stored if the procedures are aborted at any other setup.

2.Use the DMM to measure the resistance of a 50 Ω feedthrough load. Record the measurement for step 3. You can measure the load and cable resistance (recommended procedure) or just the load as shown below.

Figure D-2. 50 Ohm Feedthrough/Cable Resistance Measurement

3.Enter the following SETUP 33 and measure the value of the 50 Ω feedthrough load (and cable). Send the CAL:VALue <measured Ω>

to the function generator. This number will be used to calculate the 50 Ω output amplitude calibration constants.

Table D-15. 50 Ohm Adjustment Setup

	Nominal Input
SETUP	LOAD Z
33	50 Ω	Enter measured value of load.

Note Once the value of the 50 Ω load and cable are entered, use the SAME load and cable for all 50 Ω tests.

4.Use the DMM to measure the function generator ACrms output

voltage for SETUP 34 in the table on the next page. These adjustments use the 50 Ω load and cable measured in step 2 and connected as shown in Figure D-3.

182 Service Procedures Appendix D