Agilent Technologies 86121A, User Manual, Page: 200 / 240

Specifications—FAST Update Mode 7
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9
Specifications—FAST Update Mode
Each laser line is assumed to have a linewidth (includ-
ing modulation sidebands) of less than 10 GHz.
All specifications apply when the instrument is in the
following modes:
•
FAST
update mode unless noted. Refer to “To change the
measurement speed” on page 3-8 .
• Configured to measure narrowband devices. Specifica-
tions do not apply when the instrument is configured to
measure broadband devices. Refer to “To measure
broadband devices and chirped lasers” on page 3-4 .
Wavelength
Range 1270–1650 nm
Absolute accuracy
(lines separated by
≥
30 GHz)
±
3 ppm (
±
0.005 nm at 1550 nm,
±
0.004 nm at
1310 nm)
Differential accuracy (characteristic)
±
2 ppm
Minimum resolvable separation a
(characteristic)
20 GHz (0.16 nm at 1550 nm, 0.11 nm at
1300 nm)
Display resolution 0.001 nm
a. Signals of equal amplitude. For lines that are separated by less than 30 GHz, wavelength accuracy is
reduced.