Stanford Research Systems SR860, Operation Manual

Page: 164 / 222

146 Programming Chapter 4
SR860 DSP Lock-in Amplifier
Interface Commands
*
RST
The
*
RST
command resets the SR860 to its default configurations. The communications
setup is not changed. All other modes and settings are set to their default conditions and
values. This command takes some time to complete. This command resets any data scan
in progress. Data stored in the buffers will be lost. See page 64 for a complete list of
setting values that result from
*
RST
.
*
IDN?
The
*
IDN?
query returns the SR860's device identification string. This string is in the
format
Stanford_Research_Systems,SR860,000111,v1.23
In this example, the serial number is 000111 and the firmware version is 1.23.
*
TST?
The
*
TST? query always returns “0”.
*OPC(?)
The
*
OPC command sets the Operation Complete bit within the Standard Event Status
register (see page 152).
Querying
*
OPC?
Always returns a “1”, but does not affect the Standard Event Status
register.
LOCL(?) { i }
The
LOCL
command sets the local/remote function. If i=0 the SR860 is set to LOCAL, if
i=1 the SR860 will go REMOTE, and if i=2 the SR860 will go into LOCAL LOCKOUT.
The states duplicate the GPIB local/remote states.
In the LOCAL state both command execution and keyboard input are allowed.
In the REMOTE state command execution is allowed but the keyboard and knob are
locked out except for the [LOCAL] key which returns the SR860 to the LOCAL state.
In the LOCAL LOCKOUT state all front panel operation is locked out, including the
[LOCAL] key.
The
REMOTE
indicator is directly above the [LOCAL] key and is on when the unit is in
REMOTE or LOCAL LOCKOUT.
The Overide Remote mode must be set to Off in order for the front panel to be locked
out. If Overide Remote is On, then the front panel is active even in the REMOTE state.
Example
LOCL 1 Set the unit to REMOTE