Stanford Research Systems SR865A, Operation Manual

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148 Programming Chapter 4
SR865A DSP Lock-in Amplifier
Status Reporting Commands
CLS
The CLS command clears all status registers. The status enable registers are NOT
cleared.
ESE(?) { j, } { i }
The ESE i command sets the
standard event enable register
to the decimal value i
(0 – 255). The ESE j, i command sets bit j (0 – 7) to i (0 or 1). The ESE? command
queries the value (0 – 255) of the standard event enable register. The ESE? j command
queries the value (0 or 1) of bit j.
Example
ESE 17 Set bits 0 and 4 in the standard event enable register
ESE 4, 1 Set bit 4 in the standard event enable register
ESE? Returns decimal value of the standard event enable register
ESE? 4 Returns bit 4 of the standard event enable register
ESR? { j }
The ESR? command queries the value of the
standard event status byte
. The value
is returned as a decimal number from 0 to 255. The ESR? j command queries the value
(0 or 1) of bit j (0 – 7). Reading the entire byte will clear it while reading bit j will clear
just bit j.
Example
ESR? Returns decimal value of the standard event status byte
ESR? 4 Returns bit 4 of the standard event status byte
SRE(?) { j, } { i }
The SRE i command sets the
serial poll enable register
to the decimal value i (0 –
255). The SRE j, i command sets bit j (0
–
7) to i (0 or 1). The SRE? command queries
the value (0
–
255) of the serial poll enable register. The SRE? j command queries the
value (0 or 1) of bit j.
Example
SRE 12 Set bits 0 and 3 in the serial poll enable register
SRE 3, 1 Set bit 3 in the serial poll enable register
SRE? Returns decimal value of the serial poll enable register
SRE? 3 Returns bit 3 of the serial poll enable register
STB? { j }
The STB? command queries the value of the
serial poll status byte
. The value is
returned as a decimal number from 0 to 255. The STB? j command queries the value
(0 or 1) of bit j (0 – 7). Reading this byte has no effect on its value.