Specifications

Description
The Calibration Routines
The Cal System softkey accesses the calibration routines for the Phase
Lock Loop path and the HP 11848A.
These calibration routines generate CALDATALO and CALDATAHI for
the system, and the nominal voltages (VNOMS) for setting the
HP 11848A's internal sources. The following is a list of the calibration
capabilities provided for the system:
• Calibration of the HP 11848A Phase Noise Interface measurement
paths (Cal to 100 kHz and Cal to 40 MHz).
• Calibration of the center frequencies of the HP 11848A Internal
Sources (VNOMS).
• Evaluation of the Calibration Data currently in memory (Eval. Cal-
data). This function accesses a display that allows selection of specific
paths within the HP 11848A Interface. (Operation of this display is
the same as for 11848A Control described in this chapter). The Eval.
Caldata function allows you to evaluate the corrections for each mea-
surement path independently, or together. This routine does not actu-
ally change the HP 11848A switch positions, it only simulates changes
using the measured caldata.
• Management of the Calibration Data (Manage Caldata). This function
provides for STORING, LOADING, and CLEARING the calibration
data (CALDATALO, CALDATAHI, and VNOMS) for the mass media
denned in the System Configuration Table.
3048A Sys Chk 5-45