Language Reference

PDLSCALE

PDLSCALE Auto-scale displayed signal during PDL measurement.

N O T E

Only for use with HP 71451B Option 003, Swept Polarization Dependent Loss (PDL) Kit.

Example

240 OUTPUT 723;"PDLSCALE;"

Perform auto-scale .

Description The PDLSCALE command automatically scales the displayed signal during a polarization dependent loss (PDL) measurement.

Prior to initializing the PDL measurement, the PDLSCALE command positions the peak of trace A to the reference level and selects the scaling (that is, dB/division) based upon the minimum signal level of trace A.

After the PDLINIT command is executed, the PDLSCALE command positions the peak of trace B (that is, the maximum-hold signal) to the reference level and selects the scaling based upon the minimum point in trace C (that is, the minimum-hold signal).

After the PDLCALC command is used, the PDLSCALE command positions the peak of trace A as a result of trace B minus trace C by selecting the maximum dB/division which keeps the maximum signal below the top graticule.

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