Keysight Technologies N4374B, Руководство пользователя

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Specifications
140
Keysight
N4374B Lightwave Component Analyzer, User’s Guide
Specifications for optical to optical measurements at 1310 nm (OO mode)
N4374B system with E5071C -245 networrk analyzer
Specifications are valid under the stated measurement
conditions and after user calibration with LCA optical output
set to maximum average power (+4dBm).
• At optical input 1 (”+7 dBm max”). At optical input 2 (”+17
dBm max”), specifications are typically the same for 10 dB
higher incident average and modulated optical power.
• For external source optical input all specifications are typical
(requires option -100, -102, after CW responsivity and user
calibration with external source, for +4dBm average output
power from LCA optical output)
• For wavelength
(1310 ±20) nm (option -100, 102).
System performance 10 MHz to 50 MHz 50 MHz to 0.7 GHz 0.7 GHz to 4.5 GHZ
Relative
frequency
response
uncertainty
a
DUT response
¥ -13 dBe
(
¥ -6.5 dBo)
b
±0.25 dBe (typ.)
(±0.125 dBo) (typ.) ±0.25 dBe
(±0.125 dBo) ±0. 25 dBe
(±0.125 dBo)
Absolute
frequency
response
uncertainty
a
DUT response
¥ -13 dBe
(
¥ -6.5 dBo)
b
±1.0 dBe typ.
(±0.5 dBo typ.) ±1.0 dBe
(±0.5 dBo) ±1.0 dBe
(±0.5 dBo)
Frequency
response
repeatability
(typ.)
a
DUT response
¥ -13 dBe
(
¥ -6.5 dBo)
b
±0.02 dBe ±0.02 dBe ±0.02 dBe
Minimum measurable frequency
Response (noise floor)
c d e
-76 dBe
(-38 dBo) -82 dBe
(-41 dBo) -80 dBe
(-40 dBo)
Phase
uncertainty
(typ.)
a d
DUT response
¥ -13 dBe
(
-6.5 dBo)
b
- ±0.5° ±0.5°
Group delay uncertainty Derived from phase uncertainty, see “Group delay uncertainty ” on page 143.
Example: ±1.0°
±8 ps (0.5 GHz aperture)
a
For +4 dBm average output power from LCA optical output.
b
For DUT response m6 dBm (+4dBo) gain
c
IFBW = 100 Hz
d
Except phase wrap aliasing (example: a DUT group delay of 5 ns (1 m cable length) requires a wavelength step size of ¤ 0.2 GHz to avoid phase
wraps).
e
Average value over frequency range