Keysight Technologies 8163A/B Programming Manual page 144

4 Measurement Operations & Settings
command: [:SOURce[n]][:CHANnel[m]]:MODUlation:EXTernal:AM[:LEVel]?
syntax: [:SOURce[n]][:CHANnel[m]]:MODUlation:EXTernal:AM[:LEVel]?<wsp>
description: Returns the amplitude modulation level in %.
parameters: Optional:
response: The current amplitude modulation level or the minimum, maximum, or default amplitude modulation level.
example: sour1:modu:ext:am? +2.00000000E+000
affects: 81950A only
Notes
144
[MIN|MAX|DEF]
MIN - minimum programmable value
MAX - maximum programmable value
DEF - default value
8163A/B, 8164A/B & 8166A/B Mainframes Programming Guide