User guide

If you see only a straight line, ensure that the pattern generator is not disabled and
that it is set up to generate a pattern (e.g. PRBS).
N4876A Status LEDs
This following section explains about the different LEDs that are available on the
front panel of the N4876A 28 Gb/s Multiplexer 2:1.
Table 35
LED Name Description
Output Signals the state of the output amplifier
Constantly off when output is disabled
(0.0V)
Constantly green when output is enabled
(user defined levels)
Flashing orange when an overload
condition has been detected
Constantly orange during boot phase of
the instrument
Activity Flashes green when instrument is
accessed on the remote interfaces
Constantly orange during boot phase of
the instrument
Solving Problems 9
Agilent J-BERT N4903B High-Performance Serial BERT 517