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Output Port
The output port of the Backreflection Meter is equipped with an ultra-low backreflection APC
connector. To prevent damage to the output port connector, a measurement jumper must be
used for all measurements, even for measuring a component with an APC connector.
Internal Light Sources
The Backreflection Meter can be equipped with two internal laser sources. These are
thermoelectrically cooled for added stability and are modulated at 10 kHz. Fast changes in
ambient temperature can cause a source to become unstable. If this occurs, the meter
automatically switches to a measuring mode in which P
frequently than every minute and the message "Source Unstable" is displayed. The light source
power is monitored, and the meter returns to the standard measurement mode when the source
has stabilized.
Hybrid Jumpers
The Backreflection Meter is supplied with a hybrid measurement jumper and a hybrid calibrated
jumper. The measurement jumper has an APC connector at the input end. The other end on the
standard measurement jumper is PC, but by changing measurement jumpers this end is user-
selected, to be compatible with the input connector of the DUT. The calibrated jumper has an
APC connector at the input end and a PC connector at the output end.
Use the measurement jumper for measurement purposes only; use the calibrated jumper for
calibration purposes only. The calibrated jumper has a label attached to it identifying it as the
calibrated jumper.
Coherence Length
Reflected light from multiple reflections can change the backreflection measured by the
Backreflection Meter. This variation typically shows up as noise or drift in the signal. The
internal light source is designed to have low coherence length (typically less than 10 cm). Thus,
interference effects are typically seen only between very closely spaced components such as
non-contacting connectors.
Electrical Requirements
The Backreflection Meter is supplied with a rechargeable battery. When fully charged, the
battery provides up to eight hours of operation at room temperature. For laboratory use, use the
Backreflection Meter with the power cord. The letter B is shown on the Backreflection Meter
front panel display when the battery power is low.
Key Features
•
Backreflection measurements to -75 dB for single mode model (-40 dB for multi mode
model)
•
Power measurements to -80 dBm for single mode model (-60 dBm for multi mode model)
•
Convenient foot pedal for data logging
•
MCTS application software
•
Built-in light sources at 850, 980, 1310, 1480, 1550, 1625, or 1650 nm
•
Compensation for extraneous backreflection for accurate backreflection measurements
•
User-calibration mode
•
RS232 serial and IEEE 488 GPIB parallel interface
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
and P
are measured more
in
dark
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