Fluke RPM4 manual L2 / L3, LLn =limit, Limit

RPM4™ OPERATION AND MAINTENANCE MANUAL

L2 / L3

Purpose	Read or set the type of program command format to use (classic or enhanced).
Command	“L2”enables “classic” mode
	“L3”enables “enhanced” mode
Defaults	“L2”		(Classic mode)
Remarks	The user can select the type of remote command format using these simplified commands.
	There is no query format. This format must agree with the format sent to the RPM4. This
	command is a replacement for the “MSGFMT” command.
Example	Cmd sent:		“L3”
(enhanced)	Query reply:		“L3”		(No reply if IEEE-488)
Example	Sent:		“L2”
(classic)	Reply:		“L2”
See Also	“MSGFMT”
	4.3, 3.5.2.3
LLn
Purpose	Read or set the lower pressure limit for the active range and measurement mode (negative
	gauge or differential measurement mode only).
Command	“LLn	limit”
Classic	“LLn =limit”
Optional Suffix	“n”		The active Q-RPT is assumed if no suffix is given.
			‘1’	Specify the Hi Q-RPT if the Hi and Lo Q-RPTs are NOT OFF and the HL
				Q-RPT is not active.
				Specify the HL Q-RPT if the Hi and Lo Q-RPTs are OFF
			‘2’	Specify the Lo Q-RPT if the HL Q-RPT is not active and measurement
				mode is not differential.
			‘3’	Specify the HL Q-RPT if the HL Q-RPT is active.
Arguments	"limit”:		The lower pressure limit for the current pressure range in the specified Q-
			RPT’s current unit of measure unit and measurement mode. Value is always
			a negative value of gauge pressure.
Remarks	Negative gauge and differential modes in RPM4 have a lower limit. If the pressure is less
	than the lower limit, the pressure display flashes. This feature should always be used to
	prevent accidental over (under) pressure of a device under test.
Example	Cmd sent:		“LL	-4”
(enhanced)	Reply:		“-4 kPa g”		(no reply if IEEE-488)
Example	Cmd sent:		“LL?	-4”
(enhanced)	Reply:		“-4 kPa g”
Example	Sent:		“LL=-4”
(classic)	Reply:		“-4 kPa g”
Errors	ERR# 6:		The limit argument is invalid.
	ERR# 10		The suffix is invalid
	ERR# 23		The mode must be negative gauge to specify a lower limit.
See Also	“UL”, “MMODE”
	3.4.4,	3.3.3
LOCAL
Purpose	Returns control to the RPM4 front panel.
Command	“LOCAL”
Classic	“LOCAL”
Remark	The REMOTE program message can lock the front panel out completely. The user can return
	to local operation by sending the LOCAL program message, sending the IEEE-488 ‘GTL’
	command (if in enhanced format), or by cycling RPM4 power.
Example	Cmd sent:		“LOCAL”
(enhanced)	Reply:		“LOCAL”		(no reply if IEEE-488)
Example	Cmd sent:		“LOCAL?”
(enhanced)	Reply:		“LOCAL”
Example	Sent:		“LOCAL”
(classic)	Reply:		“LOCAL”
See Also	“REMOTE”

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