1261B User Manual
Racal Instruments
Ó
1995
Using The Enhanced Monitoring System 4-47
-4 The EMS programmable interrupt timer has failed its
self test.
-5 One section of the EEPROM has failed its
verification. Some data in the EEPROM may be
corrupt.
-6 The real-time clock has failed its self-test. Date and
Time functions will not work properly. Time stamps
for alarm conditions will not be recorded properly.
If any non-zero error code is returned, a description of the failure
is placed on the error queue. The cause of the error may be
read using the command:
SYST:ERR?
This command may be sent over the RS-232 or the VXIbus
interface. The EMS will reply with an error message with the
form:
-330,”Self-test failed;<self-test failure description>”
The <self-test failure description>s, and their meanings, are
described below:
ROM checksum failed (is XXXX, s/b YYYY)
This error is returned when the ROM checksum has
failed (*TST? returns -1). The computed checksum is
shown as four hexadecimal digits, represented by XXXX.
The stored checksum is shown as four hexadecimal
digits, represented by YYYY.
PS Voltage Sensors: +5V -5.2V -2V +24V -24V +12V -12V
This error is returned when the Power Supply voltage
sensors for one or more of the power supplies has failed.
All seven power supplies are shown in this example.
Only the failing supplies will be shown when this error
occurs. This message may be returned if the *TST?
command returns a value of -3.
PS Current Sensors: +5V -5.2V -2V +24V -24V +12V -12V
This error is returned when the Power Supply current
sensors for one or more of the power supplies has failed.
All seven power supplies are shown in this example.
Only the failing supplies will be shown when this error
occurs. This message may be returned if the *TST?
command returns a value of -3.
Fan Speed Sensors: Fan#1 Fan#2 Fan#3
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