Agilent Technologies 4294A Service Manual download pdf (Page 237)

228 Appendix C

Error messages

Order of Alphabet

138 DCBIAS CONSTANT OPERATION FAILED

When the DC bias mode was constant voltage (VOLT CONSTANT) or constant current

(CURRRENT CONSTANT), the actual DC bias output did not converge to the set DC

voltage value or DC current value, or it exceeded the set voltage limit or current limit. If a

DUT needs time to be stabilized after DC bias is applied, specify the point delay. If

necessary, change the voltage limit value or the current limit value.

139 DCBIAS LEVEL MONITOR NOT VALID

When the DC bias level monitor was not on, you attempted to execute the command to turn

on the marker DC voltage level monitor or the marker DC current level monitor

(MKRMON DCV or MKRMON DCI) and, as a result, the command was ignored. Before

turning on the marker DC voltage level monitor or the marker DC current level monitor,

turn on the corresponding DC bias level monitor (command: BMON VOLT or BMON

CURR).

137 DCBIAS OVERLOAD

When the DC bias was applied, DC current that exceeded the setting of the DC bias range

(<1mA, <10mA, or <100mA) was supplied from the bias source, or the overcurrent limit

circuit of the DC bias source operated. Increase the setting of the DC bias range, or

decrease the level of the applied DC bias.

99 DELTA MARKER OFF

When the delta marker was not displayed, you attempted to execute a function that needed

the display of the delta marker and, as a result, the command was ignored. For example,

when the delta marker was not displayed, a command corresponding to the MKRD?SPAN

key (MKRDSPAN) was sent. Before executing a function using the delta marker, first

display the delta marker (command: DMKR ON).

118 DEVICE TYPE IS NOT DOS

The execution of write access to the mass storage could not be executed because the format

type of the mass storage was not DOS.

37 DISPLAY BUFFER IS FULL

The use of the DRAW or MOVE command of HP Instrument BASIC made 4294A’s

display buffer full. Further write to the display buffer is impossible.

194 EEPROM WRITE FAIL

A write error was detected in the memory (EEPROM) to store the OPEN, SHORT, and

LOAD data for the four-terminal pair extension setting. Contact your local Agilent

Technologies sales office or the company you purchased this instrument from.

-200 Execution error

A comprehensive execution error occurred for which the 4294A could not detect further

details of the error. This error code simply indicates the occurrence of an execution error

that is defined in IEEE488.2,11.5.1.1.5.

-123 Exponent too large

The absolute value of the exponent exceeds 32,000. (Refer to IEEE488.2,7.7.2.4.1.)

-178 Expression data not allowed

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