| Variables | startfreq | Initial frequency (minimum 10 Hz) |
| endfreq | Final frequency | |
| numfreq | Number of logarithmically spaced frequencies | |
| maxamplitude | Optional maximum amplitude (um) | |
| offset | Optional offset (um) | |
| Description | This command applies a suite of frequencies to the focus lens position system in an 'closed loop' mode and performs a 'Bode' analysis on the resulting data. This command can take several seconds depending upon the number of frequencies specified. | |