9.3.4 P
ARAMETRIC
S
WEEP
(O
NLY
USBL
OCKIN
)
With the example
Parameter_sweep.py
, a
linear voltage ramp is created at an AUX Channel
using the DLL function SetLockinAUX(Channel,
Input, Voltage). “Channel”defines which Aux
output is used. “Input” defines which signal will be
displayed: In → 0; X → 10; Y → 11; R → 12; Phi
→ 13.
Basically, this examples shows how to investigate
I(V)- and dI/dV-curves with a lockin amplifier. Two
graphs display In(AUX) and R(AUX) as result. Fig.
53 Shown the result one obtains if a diode is
taken as device under test, which is quite
illustrative due to the non-linear I(V) curve of a
diode.
Manual Anfatec PCI-Lockin Amplifier AMU2.4 – Rev. 1.10 dated 30/09/20
Page 61 (70)
Figure 56: Bode plot of a 50 kHz, 20 mV oscillation analyzded with the lockin
amplifier.
Figure 57: Output graphs of the Parameter_Sweep.sce
taken with a diode as device under test. For better
understanding of the circuitry, please refer to “
.
