Agilent Technologies E3633A User Manual (English)

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Chapter 4 Remote Interface Reference

Status Reporting Commands

See diagram ‘‘SCPI Status System’’, on page 91 in this chapter for detailed

information of the status register structure of the power supply.

SYSTem:ERRor?

This query command reads one error from the error queue. When the front-panel

ERROR annunciator turns on, one or more command syntax or hardware errors have

been detected. A record of up to 20 errors can be stored in the power supply’s error

queue. See ‘‘Error Messages’’ for a complete listing of the errors in chapter 5.

• The first error returned is the first error that was stored. When you have read all

errors from the queue, the

ERROR annunciator turns off. The power supply beeps

once each time an error is generated.

• If more than 20 errors have occurred, the last error stored in the queue (the most

recent error) is replaced with -350, ‘‘Too many errors’’. No additional errors are

stored until you remove errors from the queue. If no errors have occurred when

you read the error queue, the power supply responds with +0, ‘‘No error’’.

• The error queue is cleared when power has been off or after a *CLS (clear status)

command has been executed. The *RST (reset) command does not clear the error

queue.

• All errors are cleared when you exit the menu or let the display time out for about

30 seconds.

STATus:QUEStionable:CONDition?

This command queries the Questionable Status condition register to check CV or CC

mode of the power supply. The power supply returns a decimal value which

corresponds to the binary-weighted sum of all bits in the register. These bits are not

latched. If ‘‘0’’ is returned, the power supply is in output off or unregulated state. If

‘‘1’’ is returned, the power supply is in the CC operating mode and if ‘‘2’’ is returned,

the power supply is in the CV operating mode. If ‘‘3’’ is returned, the power supply

is in failure.

STATus:QUEStionable?

This command queries the Questionable Status event register. The power supply

returns a decimal value which corresponds to the binary-weighted sum of all bits in

the register. These bits are latched. Reading the event register clears it.

STATus:QUEStionable:ENABle <enable value>

This command enables bits in the Questionable Status enable register. The selected

bits are then reported to the Status Byte.

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General

Output Current Range	0 to 3 A
Operating Temperature Range	0 to 50 °C
Storage Temperature Range	-40 to 70 °C
Ripple and Noise (Vp-p)	Voltage: <2 mV
Current Ripple and Noise (20 Hz to 20 MHz)	<500 μA
Voltage Programming Accuracy	0.05% + 10 mV
Current Programming Accuracy	0.1% + 5 mA
Ripple and Noise (rms)	≤ 350 µV