Fluke 5500A Operator's Manual page 219

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ISR?
IEEE-488
(Instrument Status Register query) Returns contents of the Instrument Status Register.
Response: <value> (decimal equivalent of the 16 bits, 0 to 32767)
Example: ISR? returns 4108
Return decimal 4108 if bits 12 (SETTLED), 3 (IBOOST), and 2 (VBOOST) are set to 1.
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LIMIT
IEEE-488
(Limit command) Set the maximum permissible output magnitude, negative and
positive, for voltage and current, which is saved in the 5500A non-volatile memory.
(While saving configuration data in the non-volatile memory, a period of about 2
seconds, the 5500A does not respond to remote commands.) Both negative and positive
values must be entered. Once set, the 5500A Calibrator retains the limit settings until
either another limit is entered, or the FORMAT SETUP command resets the limits (and
all other defaults) to the factory settings (+1000 V, +11 A). See the FORMAT command.
The magnitude of the limit has the following effect on different waveforms:
dc
ac (sinewave)
ac (non-sinewave)
ac (with dc offset)
Parameters: <positive value>,<negative value>
Example:
LIMIT 100V, -100V
Limit the voltage output to +100 V dc, 100 V ac rms, 300 V peak-to-peak, 240 V peak.
Example:
LIMIT 1A, -1A
Limit the current output to +1 A dc, 1 A ac rms, 3 A peak-to-peak.
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LIMIT? IEEE-488
(Limit query) Returns the programmed output magnitude limits for voltage and current.
Response: <positive value voltage>,<negative value voltage>,
<positive value current>,<negative value current>
Example: LIMIT? returns 1000.0000,-1000.0000,11.0000-11.0000
Return the present value of the voltage and current limits (reset values shown).
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RS-232 Sequential
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RS-232 Sequential
magnitude of limit
magnitude of limit (rms)
magnitude of limit x 3 (peak-to-peak)
magnitude of limit x 2.4 (absolute peak) (volts only)
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RS-232 Sequential
Summary of Commands and Queries
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Overlapped Coupled
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Overlapped Coupled
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Overlapped
Coupled
Remote Commands
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