PPM-350B
5
3 Getting Started with Your
PPM-350B PON Power
Meter
Turning the Unit On and Off
When you turn the PPM-350B PON Power Meter off, it saves the current mode
(Pass/Fail or Normal) and threshold set. On models supporting relative-power
measurement, unit and reference values are also kept in memory.
Note:
Offset nulling values are always returned to factory settings.
To turn the unit on:
Press
. The unit displays
EXFO
for a few seconds and vertical bars move at the
top of the display, indicating the initialization is in progress. You may use your unit
immediately under normal conditions. The unit is in Pass/Fail or Normal mode,
depending on which mode was used last time.
To turn the unit off:
From Pass/Fail or Normal modes (not threshold selection mode or correction factor
mode), hold down
a few seconds.
I
MPORTANT
If you remove batteries (and the AC adapter is unplugged), the unit
will turn off
without saving the above values
.
If batteries are low (and the AC adapter is unplugged), the unit will
save the above values and turn off.
Batteries in use
(with level;
blinking when
weak)
Status
Signal (wavelength)
Power level
Reference values displayed
(models supporting this
feature)
Display
Auto-off activated
AC adapter plugged in
Units
Correction factors displayed
Threshold selection mode
activated
Correction
factor not
equal to 0 dB
