Agilent Technologies 8504B, User Manual

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FINAL TRIM SIZE : 7.5 in x 9.0 in
Specications and Regulatory Information
Specications
Return Loss Measurement Range
Description The return loss range species the range of reection levels that can be
measured. Reections that are larger than 10 dB , for example 5 dB , may
be inaccurate due to receiver saturation. Reections smaller than 80 dB ,
for example 85 dB , may be less accurate due to instrument noise oor
limitations . At 1550 nm, the 80 dB specication applies only over the 0 to
100 mm mirror position range with dispersion correction enabled. (Refer to
\T o turn chromatic dispersion correction on and o" in Chapter 2 to learn
how to enable the correction data.) The measurement range is degraded
due to dispersion eects over the 100 mm to 400 mm range . Refer to
\Characteristics" in this chapter to see a display of the noise oor .
Specication
Return Loss Measurement Range
1
1300 nm source: 10 to 80 dB
1550 nm source: 10 to 80 dB
2
1 Specication applies after 50 averages and minimum span. F or 1300 nm, the minimum span is 1 mm. F or 1550 nm, the minimum
span is 1.2 mm. Dispersion correction must be enabled when using the 1550 nm source .
2 Specication applies over the mirror position range from 0 to 100 mm.
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