User manual

Operation
33
Hold
Pressing the Hold button toggles between freezing the
power reading and associated indicators on the LCD, and
displaying live measurements.
Button
Functions
Auto
Pressing the Auto button instructs the FieldMaxII-TO to
select the best measurement range for the incoming
signal.
Zero
Pressing the Zero button causes the analog circuitry to
zero its internal settings by running a zero cycle. If Auto
Ranging is not active, the meter will zero the currently-
selected range. If Auto Ranging is active, the meter will
zero all available ranges for the attached sensor. When a
zero procedure is in process, no other button events are
queued or activated until the procedure ends. The zero
procedure is immediately terminated if the sensor is
disconnected or if an error is encountered.
Normally, the Zero button is pressed with the laser
blocked from the connected sensor. If a finite power
level is present at the sensor, the instrument will attempt
to null it out. A bad zero fault code appears if a given
power input is too large to null on the sensitive ranges.
If the bad zero fault code appears:
• Press any soft button to dismiss the error