HP 8530A Operating And Programming Manual page 336

active parameter
The data format that you get out of the formatted array depends on the Domain you are in
and the display mode you are using:
LOG MAG LIN MAG
4 5 4 5
The
units will match those you selected for the display (dB or linear).
PHASE
4 5
The units will match those you selected for the display (dB
or linear).
HP 8530A the Keyword Dictionary
HP 8530A the Keyword Dictionary
if
HP 8530A the Keyword Dictionary
HP-IB Programming 18-7