BNC 1201 - 6 1/2 Digit Digital Multimeter - Manual (Page 128)

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-148 Character not allowed
A discrete parameter was received but a character string or a numeric
parameter was expected.
-151 Invalid string data
An invalid character string was received.
-158 String data not allowed
A character string was received but not allowed for the command.
-160~-168 Block data errors
Block data is not acceptable.
-170~-178 Expression errors
The meter does not accept mathematical expression.
-211 Trigger ignored
A Group Execute Trigger (GET) or *TRG was received but the trigger was
ignored.
-213 Trigger deadlock
A trigger deadlock occurs when the trigger source is BUS and a READ?
Command is received
-214 Init Ignored
An INITiate command was received but could not be executed because a
measurement was already in progress. Send a device clear to halt a
measurement in progress and place the meter in the “idle” state.
-221 Settings conflict
This error can be generated in one of the following situations:
Situation 1: You sent a CONFigure or MEASure command with
autorange enabled and with a fixed resolution.
Situation 2: You turned math on and then changed to a math operation
that was not valid with the present measurement function.