Stanford Research Systems SR810 Manual page 106

Remote Programming
I {n}
J
K
L m {,n}
M {n}
N {m}
O {n} {,v}
P {v}
Q
R {n}
S {n}
T m {,n}
Change the remote/local status. The SR810 Override Remote mode
can override the I2 command. Use the OVRM command to change
this.
Not implemented. Do not use.
Not implemented. Do not use.
Change the line notch filter status.
Change the reference mode to 2f. This command actually sets the
harmonic detect number to n+1 in order to access harmonics
higher than 2f.
Change the noise bandwidth. This command has no effect on the time
constants. If the S2 command is used to change the display to
Xnoise then the N m command changes the effective ENBW with
which the output noise will be reported when queried using the Q
command. The N command only affects the response to Q and only
if the S2 command is used first.
Change the X offset. Remember, v is an input voltage (not a percentage)
for the SR510.
Change the reference phase shift. The value of v is limited to -
360.0≤v≤729.99. The phase shift is also defined differently for the
SR810. Check the sense of phase rotation if your application is
phase sensitive.
Read the output value in Volts. When the current input is selected, the
output is returned in Amps.
Change the reference input mode.
Change the Output displays. The SR810 only responds if n=0 (X) or
n=2 (Xnoise).
Change the time constant.
If m=1, then T1,n sets the time constant from 1 ms (n=1) to 30 ks
(n=16). Time constants greater than 30 s are available only if the
detection frequency is below 200 Hz. The time constant slope is not
changed. The T1 query returns a maximum value of 11, even if the
time constant is greater than 100 s.
If m=2:
T2,0 changes the slope to 6 dB/oct, time constant not changed.
T2,1 changes the time constant to 100 ms with 12 dB/oct slope.
T2,2 changes the time constant to 1 s with 12 dB/oct slope.
Use the T2,n command to change the filter slope, then use T1,n to
select the time constant.
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