4 – 12
Remote Operation
Input shield grounding
IGND(?)
{
z
}
Set (query) the input shield grounding
{
to
z
=
(
FLOAT 0
,
GROUND 1
)
}
.
IGND 1
Example:
Input coupling
ICPL(?)
{
z
}
Set (query) the input source coupling
{
to
z
=
(
AC 0
,
DC 1
)
}
.
ICPL 1
Example:
4.4.6
Filter commands
Input filter type
TYPF(?)
{
z
}
Set (query) the input filter configuration
{
to
z
=
(
BANDPASS 0
,
HIGHPASS 1
,
LOWPASS 2
,
NOTCH 3
,
FLAT 4
)
}
.
TYPF FLAT
Example:
Input filter Q-factor
QFCT(?)
{
z
}
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
Example:
QFCT?
2
Input filter frequency
IFFR(?)
{
f
}
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
≤
f
≤
110 kHz).
IFFR 1000
Example:
Input filter frequency trim
IFTR(?)
{
g
}
Set (query) the input filter frequency trim value
{
to
g
}
. The default
value is
IFTR
0
.
The parameter
g
can range from
−
999
≤
g
≤
+
999, in dimensionless
units.
IFTR -128
Example:
SR124
Analog Lock-In Amplifier
