Anritsu Company VectorStar ME7848A-0172 Manuale di avvio rapido - Pagina 13
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O/O Measurements
These measurements require de-embedding of both O/E and E/O devices and the pattern should be obvious
from the previous subsections. The O/O measurements described here are slightly different from those one
might conduct with optical power meters or optical spectrum analyzers in that the system monitors what
happens to the RF envelope. Broadband insertion loss results will be similar unless the O/O device has some
bandwidth-limiting properties that affect the envelope. Optical return loss is not corrected in this
measurement so fiber end preparation/care can have more of an effect. In all of the measurements, absolute
insertion phase has little meaning because of the (usually) very large electrical lengths represented by the
optical components. Group delay (a frequency derivative of phase) or deviation from linear phase are more
often the angular metrics of most interest.
In addition to the VectorStar Calibration and Measurement Guide, additional white papers (such as Wideband
Optical Modulator and Detector Characterization, available on the Anritsu website) and application notes are
available that discuss this measurement class.
5.
Regulatory Compliance
European Union
• EMC 2014/30/EU, EN61326-1:2013
• CISPR-11/EN 55011 & IEC/EN 61000-4-2/3/4/5/6/8/11
• Low Voltage Directive 2014/35/EU
• Safety EN61010-1:2010
• RoHS Directive 2011/65/EU & 2015/683: applies to instruments with CE marking placed on the market
after July 22, 2017.
Australia and New Zealand
• RCM AS/NZS 4417:2012
1.
Under the influence of radiated RF signal frequencies of 421, 439, 441, 451, and 459 MHz, the system may exhibit minor
performance degradation.
ME7848A QSG
1
PN: 10410-00777 Rev. B
5. Regulatory Compliance
QSG-13