Stanford Research Systems SR860, Руководство по эксплуатации

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148 Programming Chapter 4
SR860 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.