Lake Shore Model 475 Gaussmeter User’s Manual
4-24
Operation
The alarm may be configured to use the magnitude of the field reading only (ignoring the sign), or to include the sign
and treat the readings algebraically.
To configure the alarm for magnitude or algebraic mode,
press and hold
the
Alarm
key for approximately 4 seconds.
The following alarm setup screen appears as a prompt for using the alarm in magnitude or algebraic mode.
Sel ec t Wi t h ° ®
Al a r m Ma g n i t u d e
Use the
s
or
t
key to select from Magnitude or Algebraic. Press
Enter
to accept the new selection and continue to the
next setting screen. Press
Escape
to cancel the new selection and return to the normal display.
When the alarm feature is used to detect an error condition an active alarm state is expected when the field reading is
higher than the high alarm setpoint or below the low alarm setpoint. This operation is achieved by setting the
inside/outside parameter to outside. It is called outside because the alarm is active when the reading is outside the range
of the two setpoints. During magnet testing or sorting it is often desirable to have the alarm active when the field reading
is inside or between the two setpoints. This operation is achieved by setting the inside/outside parameter to inside.
To configure the Alarm inside/outside setting, continue from the magnitude/algebraic mode screen or
press and hold
Alarm
and then press
Enter
until the following screen appears as a prompt for selecting the inside/outside setting.
Sel ec t Wi t h ° ®
Al a r m I n s i d e
Use the
s
or
t
key to select from Inside or Outside. Press
Enter
to accept the new selection and continue to the next
setting screen. Press
Escape
to cancel the new selection and return to the normal display.
The following images demonstrate different combinations of Inside/Outside with Magnitude or Algebraic measurements.
