Fluke 1523 Technical Manual page 78

SYSTem:ERRor?
Return a system error message if any are present in the system error queue, otherwise
it returns 0,"No error".
The error queue may contain up to ten messages. The messages are reported in the
order in which they occurred. Reading a message from the queue removes the message
so that the next message can be read. If more than ten errors occur before being read,
the most recent is replaced by -350,"Queue overflow". Possible error messages are
listed in Table 24 on page 76.
SYSTem:PASSword:CDISable
Disable access to password protected commands.
Example: SYST:PASS:CDIS
This command has no response.
SYSTem:PASSword:CENable <pass>
Enable access to password protected commands.
The <pass> parameter is the present password.
SYSTem:PASSword:CENable:STATe?
Return present state of password protection.
The response is 0 if password protection is disabled, or 1 if it is enabled.
SYSTem:PASSword:NEW <pass>
Set new password.
The <pass> parameter is the new password. It can be up to 10 characters in length and
can include any upper case letters, numeric digits, and the underscore ('_').
The default password at time of shipping is 1234.
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Example: SYST:DATE 2000,8,29
Example: SYST:ERR?
Response: 0,"No error"
Example: SYST:PASS:CEN 1234
This command has no response.
Example: SYST:PASS:CEN:STAT?
Response: 0
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