SR715/720 LCR METER
xiii
SENA(?) {i}
Set (query) LCR Status Enable register to value i (0-255).
S
TAT? {i}
Query LCR Status byte. If i is included, only bit i is queried.
STATUS BYTE DEFINITIONS
SERIAL POLL
bit
name
usage
STATUS BYTE
0
Ready
The SR7XX is ready to perform a measurement.
1 unused
2 unused
3
LCR
An unmasked bit in the LCR status register has been set.
4
MAV
The GPIB output queue is non-empty
5
ESB
An unmasked bit in the standard status byte has been set.
6
RQS/MSS
SRQ (Service Request)bit.
7
No Command There are no unexecuted commands in the input queue
STANDARD EVENT
bit
name
usage
STATUS BYTE
0
OPC
Set by the OPC command when all measurements are
complete
1
unused
2
Query Error
Set on output queue overflow (Too many responses waiting
to be transmitted.)
3
unused
4
Execution err
Set by an out of range parameter, or non-completion of some
command due a condition such as an incorrect operating
mode.
5
Command err Set by a command syntax error, or unrecognized command
6
URQ
Set by any key press
7
PON
Set by power on
LCR
bit
name
usage
STATUS BYTE
0
Math Error
Set on a floating point error.
1
A/D Error
Set when an A/D conversion fails.
2
Overload
Set when the gain stage is overloaded.
3
Underrange
Set when a measurement is below the nominal range of
values for the present range.
4
Overrange
Set when a measurement is above the nominal range of
values for the present range.
5
Out of Range
Set when the unit is unable to make a valid measurement on
the current range.
6
unused
7
mem err
the stored settings were invalid on power up.
