Agilent Technologies E4980A Service Manual page 144

Error Messages
Error number: 28
Operation that requires option 001 is performed in a model not having the power amp/DC
bias option (option 001).
28 DC bias unit connection changed
The connection with the 42841A has been changed. Cycle the power of the 42841A, then
preset the E4980A.
27 DC bias unit disconnected
The 42841A is not connected. Confirm the connection to the 42841A.
20 DC bias unit powered down
The 42841A is switched off. Turn on the switch.
63 DC source off, Turn DC source on
DC source sweep is performed with the DC source function OFF. Set the DC source
function to ON.
E
10 Exceeded AC+DC limit
The amount of the voltage level exceeds 42V peak. Lower the DC voltage or AC voltage
setting.
-200 Execution error
An error associated with execution has been generated for which this instrument cannot
specify the error message. This code indicates that an error associated with execution
defined in 11.5.1.1.5, IEEE488.2 has occurred.
-123 Exponent too long
The magnitude of the exponent was larger than 32000.
-178 Expression data not allowed
Expression data is not allowed.
-170 Expression error
Expression is improper.
F
1070 Fan failed
Cooling fan hardware failure is detected. When this error occurs, contact Agilent
Technology's Sales and Service Office or the company from which you bought the device.
21 Fixture circuit defective
A fault has occurred in a circuit to absorb back-emf of the 42842A/B. Confirm the
connection to the 42842A/B.
24 Fixture cover open
The protective cover of the 42842A/B is open. Close the cover.
23 Fixture OPEN det. defective
The opening and closing detection sensor of the 42842A/B protective cover detects an
144 Appendix D