Fluke 5502A - Page 214

5502A
Operators Manual
6-22
LIMIT
Sequential Overlapped
Coupled
IEEE-488 RS-232
x x xx
x
(Limit command) Sets the maximum permitted output magnitude, negative and positive,
for voltage and current, which is kept in the Calibrator non-volatile memory. (While
saving configuration data in the non-volatile memory, a period of about 2 seconds, the
Calibrator does not respond to remote commands.) Negative and positive values must be
recorded. When set, the Calibrator keeps the limit settings until another limit is recorded,
or the FORMAT SETUP command resets the limits (and all other defaults) to the factory
settings (±1020 V, ±20.5 A). See the FORMAT command.
The magnitude of the limit has this effect on different waveforms:
dc magnitude of limit
ac (sine wave) magnitude of limit (rms)
ac (non-sine wave) magnitude of limit x 3 (peak-to-peak)
ac (with dc offset) magnitude of limit x 2.4 (absolute peak) (volts only)
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.
LIMIT?
Sequential Overlapped
Coupled
IEEE-488 RS-232
x x xx
x
(Limit query) Shows the programmed output magnitude limits for voltage and current.
Response: <positive value voltage>,<negative value voltage>,
<positive value current>,<negative value current>
Example: LIMIT?
shows 1020.0000,-1020.0000, 20.5000, −20.5000
Shows the current value of the voltage and current limits (reset values shown).
LOCAL
Overlapped CoupledIEEE-488 RS-232 Sequential
x x xx x
(Local command) Puts the Calibrator into the local condition, clearing the remote
condition (see the REMOTE command) and front panel lockout (see the LOCKOUT
command). This command duplicates the IEEE-488 GTL (Go To Local) message.
Parameter: (None)
Example: LOCAL
Set the instrument into the local condition, clearing the remote condition and front panel
lockout (if enable).
LOCKOUT
Overlapped CoupledIEEE-488 RS-232 Sequential
x x xx x
(Lockout command) Puts the Calibrator into the lockout condition when in remote
control (see the REMOTE command). This means no local operation at the front panel is
permitted during remote control. To clear the lockout condition, use the LOCAL
command. This command duplicates the IEEE-488 LLO (Local Lockout) message.
Parameter: (None)
Example: LOCKOUT