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RM3 SERIES BACKREFLECTION METER
USER’S MANUAL
10112341 Rev 002 Page 31 of 39
Display Description
the model number (XXXX) and the software version (Y.Y).
STABILIZING
Displayed momentarily during the power-up sequence as the initial
internal reference measurements are made.
BR=-XX.XdB
Backreflection mode.
P=-XX.XXdBm
Power mode.
P=-XX.XXdB rel
Relative Power mode.
*
Displayed when the BR value is within the last 5 dB of range if using
BR
0
, or from -60 to -75 dB if not using BR
0
.
B
Low battery.
<
P or BR is lower than the minimum value.
>
P is greater than the maximum value.
BRo STORED=-XX.X
Displayed momentarily when the BR value (-XX.XdB) is being stored
as BR
0
.
ID STORED
Displayed momentarily when measuring I
D
.
TOO MUCH LIGHT
Displayed momentarily if the I
D
value is too high.
INPUT LOW
Displayed momentarily when the laser power is too low.
INPUT HIGH
Displayed momentarily when the laser power is too high.
SOURCE UNSTABLE
Displayed momentarily when the laser power is unstable.
1.3 BR CAL= X.X
Indicates the backreflection user calibration value at 1.3 µm (1.3 µm
is taken as an example).
1.5 BR CAL= X.X
Indicates the backreflection user calibration value at 1.5 µm.
1.3 PW CAL= X.XX
Indicates the power user calibration value at 1.3 µm.
1.5 PW CAL= X.XX
Indicates the power user calibration value at 1.5 µm.
Calibrating the Meter
Caution
Devices with malfunctioning lasers must be returned to the manufacturer for
calibration.
Annual calibration of the meter by JDS Uniphase is recommended. This section outlines how
to do periodic adjustments to ensure the accuracy of backreflection, loss, and power
measurements. Use only the calibrated jumper for all calibration procedures.