SR715/720 LCR METER
xiii
SENA(?) {i} Set (query) LCR Status Enable register to value i (0-255).
STAT? {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.
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