3.2
Dynamic reserve and overloads
3 – 5
Table 3.2: Maximum input signals before Input Filter overload
Sensitivity
Maximum
High Res.
Normal
Low Noise
input (RMS)
100 nV
14.5 mV
200 nV
14.5 mV
500 nV
14.5 mV
100 nV
1
µ
V
14.5 mV
200 nV
2
µ
V
14.5 mV
500 nV
5
µ
V
14.5 mV
100 nV
1
µ
V
10
µ
V
14.5 mV
200 nV
2
µ
V
20
µ
V
14.5 mV
500 nV
5
µ
V
50
µ
V
14.5 mV
1
µ
V
10
µ
V
100
µ
V
14.5 mV
2
µ
V
20
µ
V
200
µ
V
14.5 mV
5
µ
V
50
µ
V
500
µ
V
14.5 mV
10
µ
V
100
µ
V
1 mV
14.5 mV
20
µ
V
200
µ
V
2 mV
14.5 mV
50
µ
V
500
µ
V
5 mV
14.5 mV
100
µ
V
1 mV
10 mV
145 mV
200
µ
V
2 mV
20 mV
145 mV
500
µ
V
5 mV
50 mV
145 mV
1 mV
10 mV
100 mV
1.28 V
2 mV
20 mV
200 mV
1.28 V
5 mV
50 mV
500 mV
1.28 V
10 mV
100 mV
1.28 V
20 mV
200 mV
1.28 V
50 mV
500 mV
1.28 V
100 mV
1.28 V
200 mV
1.28 V
500 mV
1.28 V
be used to optimize out of band rejection. However, to recover the
signal of interest, no stage in the signal path can be permitted to
overload.
Table 3.2 gives the maximum sinewave input (in Vrms) that can be
applied to the signal input without overloading the pre-gain signal
chain, which preceeds the input filter. For signals passed by the
input filter (all signals, when in
Flat
filter type), Table 3.3 gives the
maximum sinewave inputs that can be applied to the signal input
without overloading any part of the AC signal path including the
PSD (mixer).
SR124
Analog Lock-In Amplifier
