56 cHAPTER 6: Computer Interface Operation
Model 425 Gaussmeter
RDGMODE? Measurement Mode Query
Input RDGMODE?[term]
Returned <mode>,<filter>,<band>[term]
Format n,n,n (refer to command for description)
RDGMNMX? Maximum and Minimum Reading Query
Input RDGMNMX?[term]
Returned <min>, <max>[term]
Format ±nnn.nnnE±nn, ±nnn.nnnE±nn
Remarks This command is included to support compatibility with the Model 455 and Model
475 gaussmeters—in the Model 425, this query will always return zero for the mini-
mum value
RDGMX? Maximum Reading Query
Input RDGMX?[term]
Returned <max>[term]
Format ±nnn.nnnE±nn
Remarks Returns the most recent maximum field reading
RDGREL? Relative Reading Query
Input RDGREL?[term]
Returned <relative reading>[term]
Format ±nnn.nnnE±nn
Remarks Returns the relative field reading
REL Relative Mode Command
Input REL <off/on>[term]
Format n
<off/on> Specifies Relative mode off or on: 0 = Off, 1 = On
Example REL 1[term]—relative mode turned on
REL? Relative Mode Query
Input REL?[term]
Returned <off/on>[term]
Format n (refer to command for description)
RELAY Relay Control Parameter Command
Input RELAY <mode>,<alarm type>[term]
Format n,n
<mode> Specifies relay mode: 0 = Off, 1 = On, 2 = Alarm
<alarm type> Specifies the input alarm type that activates the relay when
the relay is in alarm mode: 1 = Low alarm, 2 = High Alarm,
3 = Both Alarms
Example RELAY 2,1[term]—relay activates when low alarm activates
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