Stanford Research Systems SR865A, Operation Manual

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112 Programming Chapter 4
SR865A DSP Lock-in Amplifier
ICUR(?) { 1MEG | 100MEG | i }
The ICUR i command sets the current input gain to 1 MΩ (1 μA) (i=0) or 100 MΩ
(10 nA) (i=1).
Example
ICUR 100MEG
Set the current input gain to 100 MΩ
(10 nA)
ICUR 1
ICUR?
Returns the current input gain i
ILVL?
The ILVL? query returns the signal strength indicator from lowest (0) to overload (4).
Example
ILVL? Returns the signal strength indication
SCAL(?) { i }
The
SCAL i
command sets the sensitivity according to the table below.
i sensitivity i sensitivity
0 1 V [ μA ] 15 10 μV [pA]
1 500 mV [nA] 16 5 μ V [pA]
2 200 mV [nA] 17 2 μ V [pA]
3 100 mV [nA] 18 1 μ V [pA]
4 50 mV [nA] 19 500 nV [fA]
5 20 mV [nA] 20 200 nV [fA]
6 10 mV [nA] 21 100 nV [fA]
7 5 mV [nA] 22 50 nV [fA]
8 2 mV [nA] 23 20 nV [fA]
9 1 mV [nA] 24 10 nV [fA]
10 500 μ V [pA] 25 5 nV [fA]
11 200
μ
V [pA] 26 2 nV [fA]
12 100 μ V [pA] 27 1 nV [fA]
13
50 μV
[pA]
14 20 μV [pA]
Example
SCAL 6 Set the sensitivity to 10 mV [nA]
SCAL? Returns
the sensitivity i