Circuit Description - HP 3455A Operating And Service Manual

Section VIII THEORY OF OPERATION Model 3455A
external input voltage to the internal reference volt- cal switching circuitry. The following paragraphs describe
age times the range factor (Ky). circuit operation for the various auto-cal measurements.
8-22. Circuit Description. 8-24. 10 V de Input Offset Error Measurement. Figure 8-6
3455-B-4531
3455-B-453!
OPERATIONAL
ATTENUATOR
Figure 8-7. 1 V de Input Offset Error Measurement.
8.4