User`s guide

MAC III Mode 11
Agilent 5500 SPM User’s Guide 185
respect to the drive signal (they will remain
orthogonal to each other). This feature is
useful, for example, to maximize the real
component of the drive signal in KFM
mode. The default value is 0.
Sum External Drive Select this box to add a signal from the AUX
input to the lock-in drive signal. By default
the box not selected.
Y Component from AUX Select this box to add a signal from the AUX
input to the Y component of the lock-in
drive signal. This option essentially converts
the lock-in to an A/D converter, providing a
quick method for measuring an external
signal. By default the box is not selected.
Note that when the box is selected, the
channel will no longer function as a lock-in
since its input value is overridden.
Outputs Tab
The Output tab options set the routing paths between the MAC III
physical and internal connections.
Figure 123 Advanced AC Mode Controls window: Outputs tab