Lake Shore Model 420 Gaussmeter User’s Manual
A-10
Appendix A
B6.0 HALLCAL.EXE PROGRAM
The HALLCAL.EXE program interfaces customer attached Hall generators to the Model 420 Gaussmeter.
(See the Software License Agreement behind the title page of this manual.) Because of the many intricacies
of proper calibration, the Customer must accept responsibility for measurement accuracy.
Requirements:
•
Lake Shore Model 420 Gaussmeter (connected via RS-232 to the computer's COM1 port).
•
Lake Shore Model MCBL-6 Cable Assembly.
•
IBM or compatible CPU.
•
Hall generator meeting the sensitivity ranges given below.
•
Hall generator calibration or sensitivity constant and serial number.
1.
Set the Lake Shore Model 420 Gaussmeter to 300 Baud (see Paragraph 3.11).
2.
Insert the 5.25-inch disk and type the default drive (
A:
or
B:
).
3.
Type
HALLCAL
to execute the HALLCAL.EXE program.
4.
The program prompts for the Probe serial number. Type any combination of 6 letters or numbers. Press
Enter
when done.
5.
The program prompts for the probe type. Enter “
0
” for Hall generators with sensitivities between 5.6 and
10.4 mV/kG (@ 100 mA current). Enter “
1
” for Hall generators with sensitivities between 0.56 and 1.04
mV/kG (@ 100 mA current).
6.
The program prompts for the Calibration Constant. Enter the magnetic sensitivity in mV/kG at a control
current of 100 mA. Remember to account for the Gaussmeter 420
Ω
input impedance when calculating the
proper load resistor to install.
7.
The program displays all values entered along with designated F keys:
F1:
Probe Serial Number - ABC123
F10:
Program
Probe
F2:
Probe Type - 0
Esc:
Exit
Program
F3:
Calibration Constant - X.XXX
To change any parameter, press the appropriate F key and type in the new value. When everything
appears correct, press F10 to program the probe.
8.
It takes about 20 seconds to program the probe. After the probe is programmed, press
Esc
to exit the
program.
Summary of Contents for 420
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