EXFO EPM-500 Power Meter - Manual (Page 33)

EPM-500/ELS-500/EOT-500 28
Replacing Battery
Your unit requires one Li-Ion battery.
To replace the battery:
1. Turn off the unit (if the AC adapter is plugged in, you may replace the battery
while unit is on).
2. Open the battery compartment door located at the back of the unit.
3. Replace the battery, respecting the polarity.
4. Close the battery compartment door.
Recalibrating the Unit
Manufacturing and service center calibrations are based on the ISO/IEC 17025
Standard, which states that calibration documents must not contain a
recommended calibration interval, unless this has been previously agreed upon
with the customer.
Validity of specifications depends on operating conditions. For example, the
calibration validity period can be longer or shorter depending on the intensity of use,
environmental conditions and unit maintenance. You should determine the
adequate calibration interval for your unit according to your accuracy requirements.
Under normal use, EXFO recommends calibrating your unit every year.
Note: The FlexCare warranty program includes Calibration/Verification
packages (see Service and Repairs on page 38).
To view the last calibration date (EOT-500 and EPM-500 only):
1. From normal operating mode, hold down
and
for a few seconds. The unit displays the first
embedded software version.
2. Press until you reach the calibration date (and
version) of the power meter.
3. Press to return to normal mode.
W
ARNING
Do not throw batteries into fire or water and do not short-circuit
the batteries’ electrical contacts. Do not disassemble.