Lakeshore Learning Materials 647 - Manual (Page 61)

Lake Shore Model 647 Magnet Power Supply User’s Manual
Options & Accessories 6-3
6.2.4 Operation
To access field monitoring, press Function Menu,
then Next Menu. Function Menu 2 displays. Press the
FIELD Function key to display the Field Measurement
screen. The Menu window returns to displaying the
Output values.
The following are valid Field Measurement entries:
READING: <OFF> or <ON>
Field Reading Status.
CHANGE PROBE SETTING
Change Field Probe Settings. Press either of the Data
Entry up or down keys to display the Field Probe
Setting screen to the right.
The cursor up and down keys move the line indicator
( → ). The up and down arrow icon indicates
parameters that can only be changed using the Data
Entry up and down arrows. When there are <ON> or
<OFF> indicators, the Data Entry up and down arrows change the status. The following are valid Field Probe
Setting entries:
UNITS: T or kG
Field Units. The Up or down Numeric Entry keys scroll between the units: T (tesla) or kG (kilogauss).
The default is kG.
SETTING CHANGE DONE
Field Probe Setting Change Done. The Up or down Numeric Entry keys exit the Field Probe Setting
screen and return to the Field Measurement screen.
NOTE: The entries below change probe calibration. Do not change unless probe is actually being
calibrated.
CALIBRATE PROBE:
mV/kG: +XXX.XXX
Field Probe Sensitivity. Each Hall Probe comes with a mV/kG sensitivity. Use any numeric entry mode to
change the value from 0 to 999.999.
ZERO RDG: <OFF> or <ON>
Field Probe Zero Reading. Connect the Hall Probe and place it in zero magnetic field. Press a Data Entry
up or down arrow key to zero the probe. The display changes to <ON> to indicate an active field probe
zero reading. When the field probe zero is complete, the display returns to <OFF>.
6.2.5 Remote Operation Commands
Below is a list of IEEE-488 commands that control Model 6476 remote operation.
BFLD? Magnetic Field Query
Input: BFLD?
Returned: A number between ±999.9999.
Remarks: Returns nine characters plus up to two terminators.
BUNI Program Magnetic Field Units
Input: BUNI [units] where [units] = kG for kilogauss, or T for tesla (10 kilogauss).
Remarks: The initial status is kG. Verify there is a space between the command and units parameter.
F IE L D M E A S U R E M E N T :
R E A D IN G : <O N >
¤ C H A N G E P R O B E S E T T IN G ¥
O U T P U T :
- 0 .0 0 A
+ 0 .0 0 V
L O C
+ 12 .5 0 0 T
*
- 0 .0 0 A
+ 0 .0 0 V
L O C
F IE L D P R O B E S E T T IN G :
¤ U N IT S
S E T T IN G C H A N G E D O N E
C A L IB R A T E P R O B E
m V / kG
Z E R O R D G
O U T P U T :
: T E S L A
: + 0 .8 0 0
: <O F F >
¥
¥
¥ *