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responses (even empty ones) are terminated with an empty line (a line with no symbols
except a newline symbol in it).
When using, for example, a telnet client to control the unit, it is enough just type com-
mands and press enter to send the command.
6.2.2 Protocol Errors
Below is a list of possible errors and their explanations. They can be retrieved using
tSYSTem:ERRor[:NEXT]?
-100,"Command error" . This is the generic syntax error for devices that cannot
detect more specific errors. This code indicates only that a Command Error defined
in IEEE-488.2, 11.5.1.1.4 has occurred.
-102,"Syntax error" . An unrecognized command or data type was encountered.
-105,"GET not allowed" . A Group Execute Trigger was received within a program
message (see IEEE-488.2, 7.7).
-108,"Parameter not allowed" . Parameter given for command which does not
have any parameters.
-109,"Missing parameter" . Command requiring parameter(s) is issued without
them.
-112,"Program mnemonic too long" . Protocol keyword too long. All keywords are
less than 12 characters long.
-113,"Undefined header" . The header is syntactically correct, but it is undefined for
this specific device; for example, BXYZ is not defined for any device.
-120,"Numeric data error" . Number format is not recognized.
-129,"Numeric data out of range" . Numeric parameter value is invalid.
-140,"Character data error" . This error, as well as errors 141 through –149, is
generated when parsing a character data element. This particular error message is
used when the device cannot detect a more specific error.
-141,"Invalid character data" . Either the character data element contains an invalid
character or the particular element received is not valid for the header.
-148,"Character data not allowed" . Character data detected when number is
expected.
-150,"String data error" . String. This error as well as errors –151 through –159 is
generated when parsing a string data element. This particular error message is used
when the device cannot detect a more specific error.
-151,"Invalid string data" . A string data element was expected, but was invalid for
some reason (see IEEE-488.2, 7.7.5.2); for example, an END message was received
before the terminal quote character.
6.2 Protocol
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