R&S ZVA8, Service Manual

Page: 300 / 606

R&S ZVA Alignment
1177.5333.02 2.1 E-11
2 Alignment
This chapter describes the alignment of the frequency reference and the recording of correction data
after a board has been replaced.
The following manual alignments or corrections can be performed on the ZVA:

Alignment of the 10-MHz reference oscillator which determines the frequency accuracy of the ZVA .

Alignment of the DC inputs.

Recording the correction values for the generators and the receivers which determine the
measurement accuracy of the ZVA
’s absolute values.
By performing the alignment and recording the correction values, it is possible to ensure that the ZVA is
meeting its specifications by correcting any deviations.
The alignments must be performed within an ambient temperature range of +22 °C to +24 °C after the
appropriate warm-up time.
The ZVA meets its specs and is ready for operation when the alignment has been performed and/or
correction values have been recorded and a system error calibration carried out.
Service Menu
Access to the board-alignment functions is password-protected to prevent unintentional changes to settings.
Entering the password
System
System Config…
Measurement Wizard
►
Print
►
● Internal Reference
External Reference
Preset
GPIB Address…
Service Function…
External Tools
►
Service Function

Enter password 30473035.
The alignment shall be performed only by appropriately trained personnel because
any changes made have a profound effect on the measurement accuracy of the
instrument.
Enter Password:
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