Agilent Technologies E5100A, Programming Manual, Page: 323 / 373

G
Option 022
Overview
This option enables you to control metal deposition during a deposition process of crystal
resonators .
Metal deposition is used during a manufacturing to adjust the frequency of a crystal resonator .
The resonant frequency of a crystal resonator becomes lower as deposition proceeds . E5100A/B
OPT . 022, as described in Figure G-1 , monitors the phase at a specied frequency f
1
and
outputs preset data to the I/O port when the measured phase goes under 0 (or any value you
specify as you wish).
E5100A/B OPT . 022, then, moves its focus to the next frequency f
2
and performs another
measurement. When the measured phase reaches the specied value again, it outputs dierent
data to the I/O port. This output to the I/O port controls the amount of metal deposition to
achieve ecient and accurate metal deposition. This option's function is called the Trap
Function because it awaits the phase to match the preset phase at a certain frequency .
Figure G-1. The Trap Function
Option 022 G-1