Stanford Research Systems SR865A, Operation Manual

Page: 164 / 221

146 Programming Chapter 4
SR865A DSP Lock-in Amplifier
Interface Commands
RST
The RST command resets the SR865A 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 SR865A's device identification string. This string is in the
format
Stanford_Research_Systems,SR865A,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 Sta ndard Event Status
register.
LOCL(?) { i }
The LOCL command sets the local/remote function. If i=0 the SR865A is set to LOCAL,
if i=1 the SR865A will go REMOTE, and if i=2 the SR865A will go into LOCAL
LOCKOUT. The states duplicate the GPIB local/remote states. The
LOCL command is
not recognized on the RS-232 remote interface.
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 SR865A 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.