Agilent Technologies B2902 Service Manual download pdf (Page 288)

5- 2 Agilent B2900 SCPI Command Reference, Edition 2

Error Messages

This chapter shows the error code/messages returned from Agilent B2900 when any

error occurred during a SCPI program is executed.

Error messages are classified by error number as listed in the following table.

Negative error numbers (command error, execution error, device-dependent error,

query error) are standard SCPI errors.

Positive error numbers are B2900 specific errors, not standard SCPI errors.

When B2900 is in the remote control state, the occurrence of an error (except for

error number 0 or emergency error) sets the corresponding bit in the standard event

status register. An emergency error sets the corresponding bit in the emergency

status register.

If an error occurs, the error number and message are placed in the error queue,

which can be read by the :SYSTem:ERRor? query command. Then the

front-panel ERR indicator turns on. Errors are cleared by reading them. When all

errors are read from the queue, the errors are cleared and the ERR indicator turns

off. Errors are retrieved in the FIFO (first-in-first-out) order. The first error returned

is the first error that was stored.

The error queue is also cleared by the common command *CLS, and when power is

turned on. The error queue is not cleared by the *RST command. For these

commands, see and

Chapter 3.

If more errors have occurred than can fit in the buffer, the last error stored in the

queue (the most recent error) is replaced with -350, “Error queue overflow”. No

additional errors are stored until removing errors from the queue. If no errors have

occurred when reading the error queue, the instrument responds with +0, “No error”.

Error range Error category

Standard event status

0 No error

-100 to -199 Command error bit5

-200 to -299 Execution error bit4

-300 to -399 Device-dependent error bit3

-400 to -499 Query error bit2

1 to 32767 B2900 specific error bit3

1 ... 287 288 289 ... 326

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Agilent Technologies B2902 Service Manual Page 288