JDS Uniphase RM3750 user manual Specifications, Parameter Specification Single-mode Multimode

RM3 SERIES BACKREFLECTION METER

USER’S MANUAL

Specifications

The following optical specifications describe the warranted characteristics of the unit ( Table 3). Supplementary specifications describe the typical non-warranted performance of the unit (Table 4).

Table 3: Optical Specifications

Parameter				Specification
			Single-mode			Multimode
Operating wavelength	980,	1310,		1480, 1550,	850, 1310 nm
	1625, or 1650 ±10 nm				±20 nm
Fiber Type				single* -mode1060
	9/125		µm		multimode
	(5/125			Flexcor
	for the 980 nm)				50/125µmor62.5/125µm
Detector type	mm diameter InGaAs				3 mm diameter InGaAs
Range					to –40 dB1
backreflection	0 to -75 dB
power	0 to -80 dBm				3 to -60 dBm
Absolute accuracy	±1.0 dB 2,3					dB 4
backreflection					±1.
power	±0.		dBm	typical at -10	±0.	dBm typical at -10
	dBm5,6				dBm6
Relative accuracy	±0.4 dB 3				±0.7 dB 4
backreflection
power	±0.05 dB (<5 dB loss),				±0.15 dB (>5 dB loss) 6,7
	±0.15 dB (>5 dB loss) 5
Output connector type	Panel-mounted,
	low-backreflection APC
Remote interface	RS232 or IEEE 488 (GPIB)

1Reduced backreflection accuracy in the last 10dB of range based on termination effectiveness. Depending on the measurement setup, measurements with lower levels are possible at reduced accuracy.

2User-calibration supported.

3For a typical application, add ±0.4 dB for readings between -60 and -67 dB. Add ±0.8 dB for readings between -67 and -72 dB. Add ±1.5 dB for readings between -72 and -75 dB.

4Following the user-calibration procedure at the recommended interval. For simple reflections, such as flat-end connectors.

5Add ±0.1 dB between -70 and -80 dBm.

6Immediately after performing a dark measurement.

7Add ±0.1 dB between 0 to 3 dBm and between –35 and –40 dBm.

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