JDS Uniphase RX3 Series, User Manual

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3
Caution
To prevent damage to the output port connectors, always use the
measurement jumper for all measurements, even when measuring
components with a FC/APC connector.
Internal Light Sources
The RX3 meter can be equipped with two internal laser sources. These are thermoelectrically
cooled for added stability and can be run in both Modulated Laser mode and CW LED mode.
Modulated Laser mode is used for backreflection and power measurements. CW LED mode is
used for power measurements only. In CW LED mode, the laser is run below threshold to
provide a very low coherence length source that is mostly unpolarized.
Hybrid Jumpers
The RX3 meter is supplied with one hybrid measurement jumper and one hybrid calibrated
jumper. The measurement jumper has an FC/APC connector at the input end and an FC/PC
connector at the output end. The user can select other hybrid measurement jumpers with with
other connector types on the output end to provide an end compatible with the input connector
of the DUT. The calibrated jumper has an FC/APC connector at the input end and an FC/PC
connector at the output end.
The FC/APC connectors on both types of hybrid jumpers are connected to the output port of the
meter.
Use the measurement jumper for measurement purposes only; use the calibrated jumper for
calibration purposes only.
Coherence Length
Reflected light from multiple reflections can change the backreflection measured by the meter.
This variation shows up as noise or drift in the signal. The internal light source is designed to
have low coherence length (usually less than 10 cm) in Modulated Laser mode. Thus,
interference effects typically are seen only between very closely spaced components, such as
non-contacting connectors.
Key Features
SM and MM available
Measurements at 850, 1310, 1480, 1490, 1550, 1625, or 1650 nm
Integrated switch included in the calibration
Multidisplay mode
Applications
SM fiber connectors and component testing
Ribbon fiber measurements
MM fiber connector testing
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