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N4374B Datasheet(PDF) 9 Page - Agilent(Hewlett-Packard) |
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N4374B Datasheet(HTML) 9 Page - Agilent(Hewlett-Packard) |
9 / 18 page 9 Specifications for electro-optical measurements at 1550 nm N4374B system with network analyzer E5071C -245 Specifications are valid under the stated measurement conditions. 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 wavelength: (1550 ±20) nm (option -101, 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 DUT response ≥ -18 dB(W/A) [f1] ±0.5 dBe typ. ±0.7 dBe (±0.5 dBe typ.) ±0.8 dBe (±0.6 dBe typ.) ≥ -38 dB(W/A) ±0.5 dBe typ. ±0.5 dBe typ ±0.6 dBe typ. Absolute frequency response uncertainty DUT response ≥ -18 dB(W/A) [f1] ±1.3 dBe typ ±2.2 dBe (±1.3 dBe typ.) ±2.2 dBe (±1.3 dBe typ.) Frequency response repeatability (typ.) DUT response ≥ -38 dB(W/A) [f1] ±0.02 dBe ±0.02 dBe ±0.02 dBe Minimum measurable frequency response (noise floor ) [f2] [f4] -100 dB(W/A) typ. -103 dB(W/A) -103 dB(W/A) Phase uncertainty (typ.) [f3] DUT response ≥-38 dB(W/A) [f1] - ±1.0° ±1.0° Group delay uncertainty Derived from phase uncertainty, see section “Group delay uncertainty”. Example: ±1.0° → ±8 ps (0.5 GHz aperture) [f1] For DUT optical peak output power ≤ +7 dBm. [f2] IFBW = 100 Hz. [f3] Except phase wrap aliasing (example: a DUT group delay of 5 ns (1 m cable length) requires a frequency 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. (E/O mode) |
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