Gain And Time Constant Commands - Stanford Research Systems SR124 Operation And Service Manual

4.4 Commands
NCHD(?) g
Example:

4.4.7 Gain and time constant commands

SENS(?) z
Example:
RMOD(?) z
Example:
SR124 Analog Lock-In Amplifier
Input filter notch depth trim
Set (query) the input filter notch depth trim value to g . The default
value is NCHD 0.
The parameter g can range from 999
units.
NCHD?
125.000000000
Input sensitivity
Set (query) the full-scale input sensitivity setting to z . Allowable
values are:
z Value Full-scale
sensitivity
100 nV
S100NV 0
200 nV
S200NV 1
500 nV
S500NV 2
1 V
S1UV 3
2 V
S2UV 4
S5UV 5 5 V
10 V
S10UV 6
20 V
S20UV 7
50 V
S50UV 8
100 V
S100UV 9
S200UV 10 200 V
See ISRC command discription for a discussion of sensitivity when
configured for current inputs.
SENS?
S100UV
Reserve mode
Set (query) the input sensitivity setting to z (HIGH 0, NORMAL 1,
LOWNOISE 2) .
RMOD 1
g 999, in dimensionless
z Value Full-scale
sensitivity
500 V
S500UV 11
1 mV
S1MV 12
2 mV
S2MV 13
5 mV
S5MV 14
10 mV
S10MV 15
S20MV 16 20 mV
50 mV
S50MV 17
100 mV
S100MV 18
200 mV
S200MV 19
S500MV 20 500 mV
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