Filter Commands - Stanford Research Systems SR124 Operation And Service Manual

4 – 12
IGND(?) z
Example:
ICPL(?) z
Example:

4.4.6 Filter commands

TYPF(?) z
Example:
QFCT(?) z
Example:
IFFR(?) f
Example:
IFTR(?) g
Example:
Input shield grounding
Set (query) the input shield grounding to z (FLOAT 0, GROUND 1) .
IGND 1
Input coupling
Set (query) the input source coupling to z (AC 0, DC 1) .
ICPL 1
Input filter type
Set (query) the input filter configuration
HIGHPASS 1, LOWPASS 2, NOTCH 3, FLAT 4) .
TYPF FLAT
Input filter Q-factor
Set (query) the input filter Q-factor to z (Q1 0, Q2 1, Q5 2, Q10 3,
Q20 4, Q50 5, Q100 6, QENBW 7 ) .
The 10%-ENBW filter mode is set by QFCT QENBW.
QFCT Q5
QFCT?
2
Input filter frequency
Set (query) the input filter frequency to f , in Hz. The default value
is IFFR 1000.00.
The allowed range is 2.0 to 110000.0 (2 Hz
IFFR 1000
Input filter frequency trim
Set (query) the input filter frequency trim value to g . The default
value is IFTR 0.
The parameter g can range from 999
units.
IFTR -128
Remote Operation
to z (BANDPASS 0,
f 110 kHz).
g 999, in dimensionless
SR124 Analog Lock-In Amplifier