JDS Uniphase RM3750 user manual Calibrating the Meter, Stabilizing

	RM3 SERIES BACKREFLECTION METER
	USER’S MANUAL
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
	BR0, or from -60 to -75 dB if not using BR0.
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 BR0.
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.

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