Stanford Research Systems SR865A, Operation Manual

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Commands xv
SR865A DSP Lock-in Amplifier
SR865A Status Bytes
Serial Poll Status Byte
bit name usage
0 unused
1 unused
2 ERR An enabled bit in the error status byte has been set
3 LIA An enabled bit in the LIA status byte has been set
4 MAV The interface output buffer is non-empty
5 ESB An enabled bit in the standard status byte has been set
6 SRQ SRQ (service request) has occurred
7 unused
Standard Event Status Byte
bit name usage
0 OPC Operation complete
1 INP Input queue overflow
2 unused
3 QRY Output queue overflow
4 EXE A command cannot execute correctly or a parameter is out of range
5 CMD An illegal command is received
6 URQ Set by any user front panel action
7 PON Set by power-on
LIA Status Word
bit name usage
0 CH1OV CH1 output overload
1 CH2OV CH2 output overload
2 unused
3 UNLK External reference or Chop unlock detected
4 RANGE Input range overload detected
5 SYNCF Sync filter frequency out of range
6 SYNCOV Sync filter overload
7 TRIG Set when data storage is triggered
8 DAT1OV Data Channel 1 output overload
9 DAT2OV Data Channel 2 output overload
10 DAT3OV Data Channel 3 output overload
11 DAT4OV Data Channel 4 output overload
12 DCAPFIN Display capture to USB stick completed
13 SCNST Scan started
14 SCNFIN Scan completed