Stanford Research Systems SR865A Operation Manual page 148

130 Programming
SCNENBL 1
SCNENBL?
SCNRUN
The
SCNRUN
scan is already running.
SCNPAUSE
The
SCNPAUSE
already paused.
SCNRST
The SCNRST
paused). This sets the scan parameter to its begin value but does not start a scan.
SCNSTATE?
The SCNSTATE?
running (2), paused (3) or done (4). This is a query only command.
SCNFREQ(?) [ BEGin | END | j ] { , f { HZ | KHZ | MHZ } }
The SCNFREQ j, f
of f will be rounded to 6 digits or 0.1 mHz, whichever is greater. The value of f is limited
to 1 mHz ≤ f ≤ 4 MHz.
Example
SCNFREQ BEG, 1234
SCNFREQ 0, 1.234 KHZ
SCNFREQ? 0
SCNAMP(?) [ BEGin | END | j ] { , v { NV | UV | MV | V } }
The SCNAMP j, v
value of v will be rounded to 3 digits or 1 nV, whichever is greater. The value of v is
limited to 1 nV ≤ v ≤ 2.0 V.
Example
SCNAMP END, 1.23
SCNAMP 1, 1230 MV
SCNAMP? 1
SCNDC(?) [ BEGin | END | j ] { , v { NV | UV | MV | V } }
The
SCNDC j, v
v will be rounded to 3 digits or 0.1 mV, whichever is greater. The levels may be
programmed from −5.00 V to +5.00 V.
Example
SCNDC BEGIN, -1.23
SCNDC 0, -1230 MV
SR865A DSP Lock-in Amplifier
Returns the scanning off/on state i
command starts or resumes the scan. This command has no effect if the
command pauses the scan. This command has no effect if the scan is
command resets the scan, regardless of its current state (running or
query returns the current state of the scan, off or disabled (0), reset (1),
command sets the begin (j=0) or end (j=1) frequency to f. The value
Set the begin frequency to 1.234 kHz
Returns the begin frequency
command sets the begin (j=0) or end (j=1) ref amplitude to v. The
Set the end reference amplitude to 1.23 V
Returns the end reference amplitude
command sets the begin (j=0) or end (j=1) ref dc level to v. The value of
Set the begin reference dc level to −1.23 V
Chapter 4