3.3
Input filter details
3 – 7
10
-2
10
-1
10
0
10
1
10
2
-60
-50
-40
-30
-20
-10
0
10
Band Pass
Normalized frequency (f/f
0
)
Filt
er r
esponse (dB)
Q = 1
2
5
10
20
50
100
Figure 3.1: The SR124 band pass input filter gain
10
-2
10
-1
10
0
10
1
10
2
-60
-50
-40
-30
-20
-10
0
10
High Pass
Normalized frequency (f/f
0
)
Filt
er r
esponse (dB)
Q = 1
2
5
10
20
50
100
Figure 3.2: The SR124 high pass input filter gain
SR124
Analog Lock-In Amplifier
