Ceyear 1465 Series, Руководство по программированию

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5 Error Description
5.1 Error information
122
FIFO overload Only for digital-based band interface: High external input sampling rate.
Input overload Signal power of RF input port is out of specified range.
No reference The signal generator does not detect any required external reference single
input.
OVEN OCXO has not reached the working temperature. Generally, after turning on
the machine for several minutes, OCXO will enter normal working condition
and the error message will disappear.
No ALC Excess power or no power.
Loss of lock of
reference loop
The signal generator‘s internal loop signal involves loss of lock.
Loss of lock of decimal
loop
The signal generator‘s fractional loop signal involves loss of lock.
Loss of lock of high
purity loop
The signal generator‘s fractional loop signal involves loss of lock.
Loss of lock of YO
The signal generator‘s YO loop signal involves loss of lock.
5.1.2.2 Remote error messages
1) Format and description of error information
Under the remote control mode, the error information will be recorded in the error/event queue of the
status re
porting system. The error information can be queried with the command ―SYSTem:ERRor?‖,
and the format is as follows:
―<Error code>, "<Error information in error queue>; <Detailed description of error information>‖
E.g.:
―-110, "Data out of Range; Inputted Parameter out of Lower Bound.‖
The information of the negative error code defined in SCPI standard will not be described in details here.
2) Type of error information
Each error corresponds to only one type of error message. The following classification describes the
types of error messages (8257):

Query error (
–499 to –400):
Instrument output queue control detects the message exchange
protocol error described in IEEE 488.2, Chapter 6. Now the event state register‘s query error bit
(bit2) is set (refer to IEEE 488.2, 6.5 for details). Now data can not be read successfully from output
queue.

Device-specific error
（
-399 to
–300, 201 to 703, and 800 to 810
） ：
Instrument operation fails,
which may be caused by abnormal hardware/firmware state, and this error code is often used in
instrument self test. Now the event state register‘s instrument feature error bit (bit3) is set.

Execution error (-299 to
–200):
Indicates that the device has encountered an error during the
measurement process. Now the even
t state register‘s execution error bit (bit4) is set.

Command error (-199 to
–100):
The instrument detects syntactic error during command parsing,
which is caused by incorrect command format. Now the event state register‘s command error bit
(bit5) is set.