4 Error Messages
150 E4418B Power Meter User’s Guide
–178 Expression data not allowed
A legal expression data was encountered but not allowed by the power meter at this point.
For example SYST:LANG (5+2).
–211 Trigger ignored
Indicates that <GET> or *TRG or TRIG:IMM was received and recognized by the device
but was ignored because the power meter was not in the wait for trigger state.
–213 Init ignored
Indicates that a request for a measurement initiation was ignored as the power meter was
already initiated.
For example, INIT:CONT ON
INIT.
–214 Trigger deadlock
TRIG:SOUR was set to HOLD or BUS and a READ? or MEASure? was attempted,
expecting TRIG:SOUR to be set to IMMediate.
–220 Parameter error;Frequency list must be in ascending order.
Indicates that the frequencies entered using the MEMory:TABLe:FREQuency
command are not in ascending order.
–221 Settings conflict
This command occurs under a variety of conflicting conditions. The following list gives a few
examples of where this error may occur:
•If the READ? parameters do not match the current settings.
•If you are in fast mode and attempting to switch on for example, averaging, duty cycle or
limits.
•Trying to clear a sensor calibration table when none is selected.
–221 Settings conflict;DTR/DSR not available on RS422
DTR/DSR is only available on the RS232 interface.
–222 Data out of range
A numeric parameter value is outside the valid range for the command. For example,
SENS:FREQ 2KHZ.
–224 Illegal parameter value
A discrete parameter was received which was not a valid choice for the command. You may
have used an invalid parameter choice.
For example, TRIG:SOUR EXT.
–226 Lists not same length
This occurs when SENSe:CORRection:CSET[1]|CSET2:STATe is set to ON
and the frequency and calibration/offset lists do not correspond in length.
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