N4691B Просмотр технического описания (PDF) - HP => Agilent Technologies
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N4691B Datasheet PDF : 20 Pages
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Specifications for electro-optical measurements at 1310 nm
N4375B system with network analyzer
N5230C -225
N5242A -200
N5242A -400
(E/O mode)
Specifications are valid under the stated measurement conditions.
At optical input 1 (“+ 7 dBm max”). At optical input 2 (“+ 17 dBm max”), specifications are typicaly the same for
10 dB higher incident average and modulated optical power.
For wavelength:
(1310 ±20) nm (option -100, 102).
System performance
Relative frequency
response uncertainty
DUT response
≥ -22 dB(W/A) [f1]
Absolute frequency
response uncertainty
≥ -32 dB(W/A)
≥ -42 dB(W/A)
DUT response
≥ -22 dB(W/A) [f1]
Frequency response
repeatability (typ.)
DUT response
≥ -22 dB(W/A) [f1]
≥ -32 dB(W/A)
≥ -42 dB(W/A)
Minimum measurable frequency
response (noise floor ) [f2] [f4]
Phase uncertainty
(typ.) [f3]
DUT response
≥ -42 dB(W/A) [f1]
Group delay uncertainty
0.05 GHz to 0.2 GHz 0.2 GHz to 0.7 GHz 0.7 GHz to 20 GHz
±0.7 dBe typ.
±0.7 dBe typ.
±0.8 dBe typ.
±0.7 dBe
(±0.5 dBe typ.)
±0.5 dBe typ.
±0.6 dBe typ
±0.7 dBe
(±0.5 dBe typ.)
±0.5 dBe typ.
±0.6 dBe typ.
±1.7 dBe typ
±2.2 dBe
(±1.5 dBe typ.)
±2.2 dBe
(±1.5 dBe typ.)
±0.1 dBe
±0.1 dBe
±0.19 dBe
-60 dB(W/A)
±0.1 dBe
±0.1 dBe
±0.15 dBe
-86 dB(W/A)
±0.12 dBe
±0.12 dBe
±0.17 dBe
-86 dB(W/A)
-
±2.0°
Derived from phase uncertainty, see section
“Group delay uncertainty”.
Example: ±2.0° → ±8 ps (1 GHz aperture)
±2.0°
[f1] For DUT optical peak output power ≤ +7 dBm.
[f2] IFBW = 10 Hz.
[f3] 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). Excluding a
constant group delay offset of <±0.3 ns typ. (cable length uncertainty < ±0.06 m). A constant group delay offset leads to a phase offset ∆φ = 360° × ∆GD × fmod
(in deg).
[f4] Average value over frequency range
8
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