Technical data
iu
 the PROTECT
position.
Troubleshooting 5-3
module.
 Verify that it is 
wrihprotect
 switch on the left side of
the 
and/or
 IF sections.
Refer to 2001 ILLEGAL CMD.
Refer to 2001 ILLEGAL CMD.
Refer to 2001 ILLEGAL CMD.
Check the 
maim&me
master,
can
 be isolated by substituting
and
 module.
The problem 
commaud,
 a problem internal to the module, or
an open cable between the master 
sending
 such a
can
 be
caused by the master element  
encounters
a command it does not recognize. This 
when
 the module  
occurs
EAROM
UNPROTECTED
ROM CHECK
The programmed checksum of the ROM does not
ERROR
agree with the computed checksum.
This error  
Tabfe
 5-2. HP 70903A Error Messages
Error Number
Message
Meaning
2001
ILLEGAL
CMD
2002
2006
2009
ILLEGAL
PARAMETER
PARAMETER
OUT OF RANGE
PRQTCOL
ERROR
nsuaBy
 catastrophic to operation of the module.
70903A
 hardware. An error indicates that some
of the hardware is not functioning properly. Measurement accuracy may be impaired.
Hardware Broken Errors
These error codes are generated by hardware or firmware failures within the module and are
to
2999
6000
to
6999
7000
to
7999
instrument is used incorrectly. This usually
Hardware Warning Errors
These error codes report the status of the HP 
Warning
Hardware Broken
Usage/Operating Errors
Usage and operating errors are generated when an
occurs during remote operations.
2000
Usage/Operatiug
Hardware 
an
 HP 70903A are listed in this section. The
messages are grouped by functional category; each category has its own series  of 
numbers.
Refer to the installation and verification manual 
for the system master for a complete list of
all system error-messages.
Table 5-l. Error Message Grouping
Error Messages
Spectrum-analyzer error-messages generated by 










