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Lake Shore Model 480 Fluxmeter User’s Manual
Basic Operation 4-3
KEYPAD DEFINITION (Continued)
Coil Cal: Calibrates a user’s coil with a standard magnet or other known magnetic
environment.
Set Percent: Assigns a scale factor to enable readings in percent units. Press and hold to view or
manually set the percent scale factor.
Alarm Setup: Configures alarm feature for the display and alarm relays.
Alarm On/Off: Turns alarm feature On or Off.
Local: Returns instrument to local operation after the IEEE-488 interface has put it in
remote mode.
Interface: Selects the IEEE-488 address and terminators and serial interface baud rate.
Filter: Configures the display filter which averages readings so environmental noise does
not show up on the display. Press and hold to select DC resolution.
Analog Out: Selects corrected analog output operating mode. There is no user control of monitor
output.
Escape: Terminates a setting function without changing the existing parameter value. Press
and hold to reset instrument to default values.
Up Arrow: Chooses between parameter values during setting operations.
Down Arrow: Chooses between parameter values during setting operations.
Enter: Completes setting functions and returns to normal operation. Press and hold to lock
or unlock keypad.
4.5 GENERAL KEYPAD OPERATION
There are three basic keypad operations:
1. Direct Operation: The key function occurs upon pressing the key. Peak Reset , Peak Hold ,
Reading Reset , AC/DC , Local , and Alarm On/Off operate directly when the key is pressed.
2. Setting Selection: Users select from a list of settings. Range , Drift Adjust , Units , Coil Select ,
Address , Alarm Setup , and Baud display setting options when pressed. Use the up and down
arrow keys as appropriate, then press Enter to accept the change or Escape to return to the old
selection.
3. Data Entry: Users enter numeric data with the data entry keys. Data entry keys include numbered
keys, the positive/negative sign ( +/- ) key, and the decimal point ( . ) key. The Coil Setup , Alarm
Setup , Coil Cal , Set Percent , and Analog Out keys use data entry.
Use the data entry keys to enter the number value, then press the Enter key to accept the new data
and advance to the prefix field. Use the

or

keys to select the appropriate prefix and press the
Enter key again to complete the operation. Press the Escape key any time before the operation is
complete to return to the old value.
Units prefixes of µ, m, _ (no prefix), k, or M are allowed for most coil parameters and field settings.
Not all prefixes make sense for every parameter, but they are left active to ensure the most
flexibility for the user. If it is unclear which prefix to use, set the prefix to _ for no prefix, and the
instrument unit shown on the setting screen will be used.