SOFTWARE DESCRIPTION
O
VERVIEW
Figure 8 shows the main window of the LockIn program, which appears when the program is
opened. For checking the actually detected values, the two meters are used. Basic input parameters
(frequency, amplitude, offset phase and harmonic) can be selected in the right part of the window.
Parameters, which concern the input stage (time constants, RollOff, and input gain) are chosen in
the left part of the window.
The frequency is either the internal frequency (black numbers) or the detected external frequency
from the reference input (grey numbers).
The menu line allows typical Windows functions, while the button in the function line open new
windows with specific functions.
F
UNCTIONS
IN
THE
M
ENU
L
INE
F
ILE
Exit
- Exit the program
O
PTION
•
overload
Overload occurs, when the dc input signal exceeds the full scale sensitivity for the selected range.
This full scale sensitivity is 7 V
rms
for high reserve, 700 mV
rms
for normal reserve and 70 mV
rms
for
low reserve. With this option can be selected whether a beep and/or a color change is shown in case
of overload.
•
ext. reference
For LockIn-amplifier versions with PLL (Phase locked loop), the reference frequency can be either
Manual Anfatec PCI-Lockin Amplifier AMU5.0 – Rev. 1.01
Page 15 (34)
Figure 8: Main window of the LockIn program with description of the functions.
