Event Register is a read only register. Bits in an event register are set
depending on the state of the power supply.
An event register is cleared after its value was queried or by sending *CLS
command.
A *RST command does not clear event registers.
When an event register is queried, the power supply returns a decimal value,
which is the binary – weighted sum of all bits of the register.
An Enable Register defines which bits from the corresponding event register
are logically Ored to form the coresponding bit in the Status Byte.
An enable register is readable and writable.
An enable register is not cleared after quering it, or by *CLS command.
Questionable Status Register
The Questionable Status Register contains bits which give an indication of the
quality of different parameters. A set bit indicates that the associated parameter
is of questionable quality.
Bit 0 -Voltage
- is set when the voltage becomes unregulated.
- indicates that the power supply is / was in constant current mode
Bit 1 -Current
- is set when the current becomes unregulated.
- indicates that the power supply is / was in constant voltage mode
Bits 2..8 -Not used
- always set to 0
Bit 9 -Overvoltage
- is set when over voltage protection circuit has tripped
Bits 10..15 -Not used
- always set to 0
Questionable Status Event Register is cleared by:
-
-
*CLS command
-
-
quering event register, using STATus:QUEStionable? Command
Questionable Status Enable Register is cleared by:
-
-
STATus:QUEStionable:ENABle 0 command
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