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132
Programming
Data Transfer Commands
OUTR? [ DAT1 | DAT2 | DAT3 | DAT4 | j ]
The
OUTR? j
The value of j (0–3) corresponds to the
DAT4
Example
OUTR? DAT2
OUTR? 1
OUTP? [ j ]
The
OUTP? j
selects the parameter according to the table below. The enumeration strings may be used
instead of the integer value j.
The parameter list is
j
0
1
2
3
4
5
6
7
8
Example
OUTP? 1
OUTP? Y
SNAP? [ j, k ] { , l }
The
SNAP?
SNAP?
time. This is important when the time constant is very short. Using the
commands will result in time delays, which may be greater than the time constant,
between reading X and Y.
The
SNAP?
j, k, l select the lock-in parameters as listed above (see
may be used instead of the integer values for j, k, l.
Example
SNAP? 0,1,4
SNAP? X, Y, IN1
SR865A DSP Lock-in Amplifier
query returns the value of data channel j.
(orange) data channels.
Returns the value of data channel 2 (blue)
query returns the value of a single lock-in parameter. The argument j
enumeration parameter
X
X output
Y
Youtput
R
R output
θ output
THeta
IN1
Aux In1
IN2
Aux In2
IN3
Aux In3
IN4
Aux In4
XNOise
Xnoise
Returns the value of Y
query returns the values of 2 or 3 parameters at a single instant. For example,
is a way to query values of X and Y (or R and θ) which are taken at the same
command requires at least two arguments and at most three. The arguments
Returns the values of X, Y and Aux In1
(green),
(blue),
DAT1
DAT2
j
enumeration
9
YNOise
10
OUT1
11
OUT2
12
PHAse
13
SAMp
14
LEVel
15
FInt
16
FExt
OUTP?
Chapter 4
(yellow) and
DAT3
parameter
Ynoise
Aux Out1
Aux Out2
Reference Phase
Sine Out Amplitude
DC Level
Int. Ref. Frequency
Ext. Ref. Frequency
OUTP?
or
OUTR?
). The enumeration strings
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