Table of Contents
Advertisement
3 Specifications and Regulations
Compliance
N O T E
68
and resetting the attenuation or power level. The repeatability is
defined as ± half the difference between the highest and the lowest
measured attenuation or power level over the repeated changing and
resetting of the attenuation or power level.
Figure 43
Repeatability
Conditions: Constant operating conditions. Operating in power setting
mode requires zeroing prior to measurement.
Resolution
The smallest possible increment or decrement in Attenuation Setting
Mode or Power Setting Mode.
Return loss
The ratio between the incident power and the power reflected back from
the instrument into the input fiber, expressed in dB.
Conditions: As specified. (For attenuators: applicable to both ports
with fiber cables with high quality connectors in perfect optical
condition on both attenuator ports and the respective second port
terminated (zero reflectance).)
Measurement: With return loss meter and non-coherent source of
applicable wavelength.
The measurement result includes internal reflections in the instrument, such as
reflections from both attenuator ports.
Keysight N77xx Series
Advertisement
Table of Contents
