25
Display Description
TRANSMITTING
Displayed when the LOG key is pressed.
(table continued)
TIME OUT ERROR!
Displayed momentarily when the meter is unable to send out data
through the GPIB or the RS232 port.
LOG
Indicates that the data logging option has been enabled.
RESTORE
LAST SETTINGS
Î
INITIALIZE
Î
Displayed during power-up, enabling the user either to restore the
last settings used or to initialize the meter.
OFFS STORED
Displayed momentarily when the Setup function was successfully
completed in Absolute or Relative Power mode.
Troubleshooting
If any problem described in this section persists, contact JDS Uniphase or your local
representative.
All backreflection measurement is affected by the loss before the DUT and by reflections before
and after the DUT.
Loss Before the DUT
When a DUT is connected to the meter, the loss from the connectors affects the backreflection
reading. Because the light is exiting from the meter and then returning, it goes through the
connectors twice; consequently, the loss effect is doubled. If the loss is close to 0.15 dB, its
effect is compensated automatically by the meter. If the loss differs substantially from 0.15 dB,
follow the setup procedures described in the
Setting Up the Meter for Loss and Power
Measurements
section.
Reflections Before the DUT
When a device is connected to the RX3 meter, the reflections from the connectors affect the
backreflection readings. The front panel FC/APC connection should have BR
0
no higher than
-25 dB in order to provide backreflection to -40 dB. To ensure that the meter automatically
compensates for these backreflections, follow the instructions in the
Setting Up the Meter for
Loss and
Power Measurements
section, and ensure that the backreflections do not change
from the time of the setup.
Reflections After the DUT
When making a backreflection measurement, the fiber after the DUT must be terminated to
eliminate reflections from the end of the fiber. For best accuracy when making very low
backreflection measurements, terminate near the DUT to eliminate reflections from the fiber
itself.
Front-Panel Connectors
Follow the maintenance procedure described in the
Maintaining the Meter
section to ensure
that the internal pigtail connectors are clean and properly connected to the hinged door of the
output module.
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
Summary of Contents for RX3 Series
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