Error Messages

Error Messages

-231

Data questionable;CAL ERROR ChB

 

Power meter calibration failed on channel B. The most likely cause is

 

attempting to calibrate without applying a 1 mW power to the power

 

sensor.

-231

Data questionable;Input Overload ChA

 

The power input to Channel A exceeds the power sensor’s maximum

 

range.

-231

Data questionable;Input Overload ChB

 

The power input to Channel B exceeds the power sensor’s maximum

 

range.

-231

Data questionable;Lower window log error

 

This indicates that a difference measurement in the lower window has

 

given a negative result when the units of measurement were

 

logarithmic.

-231

Data questionable;Upper window log error

 

This indicates that a difference measurement in the upper window has

 

given a negative result when the units of measurement were

 

logarithmic.

-231

Data questionable;ZERO ERROR ChA

 

Power meter zeroing failed on channel A. The most likely cause is

 

attempting to zero when some power signal is being applied to the

 

power sensor.

-231

Data questionable;ZERO ERROR ChB

 

Power meter zeroing failed on channel B. The most likely cause is

 

attempting to zero when some power signal is being applied to the

 

power sensor.

-241

Hardware missing

 

The power meter is unable to execute the command because either no

 

power sensor is connected or it expects an HP E-series power sensor

 

and one is not connected.

-310

System error;Ch A Dty Cyc may impair accuracy with ECP

 

sensor

 

This indicates that the sensor connected to channel A is for use with

 

CW signals only.

4-8

HP EPM-442A User’s Guide