OTDR Series e-Manual, D07-00-076P-RevC00 Page 63 of 107
To calibrate the Loss meter to the LS:
Note: For more information on patchcords, see 6.6.2 Fiber Patchcord.
1. Connect the LS to the OPM using a patch cord.
2. Tap the green dB button.
3. Go to OLS and select the laser wavelength or Loop mode. The wavelength should match
the light source wavelength, unless Wave ID is available.
4. Press Set to record the 0.00 dB point. A reference point is established and the calibrated
LS can be connected to the far-end of the fiber to measure the loss.
• dB/dBm: Switches between dB and dBm measurement units.
• Set: Sets the reference value for the current wavelength.
• Enter: Edits reference values.
• Hold: Freezes the last power or loss reading on the screen. Hold appears on the white
screen when tapped. Tap Hold again to unfreeze it.
• Save: Records instantaneous power or loss readings in the Results tab. Up to 12
measurements can be logged in the Results tab. The Save button must be used to
record these individual readings (e.g. same cable at different wavelength). Use the
Folder button to save the complete set of results. This is useful when measuring
multiple fibers or testing one fiber with multiple wavelengths.
Note: If your device is equipped with a built-in clock, the saved measurement result will
have a time stamp.
• Zero: Recalibrates the OPM to zero value for when measurement conditions change
significantly. When in doubt, perform this procedure prior to making any measurements.
For example, when you are testing in cold outdoor temperatures and then move testing
inside to a heated building.
Note: Put cover over OPM test port BEFORE recalibrating.
To Next Page
Loading...
