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PDF N4374B Data sheet ( Hoja de datos )
| Número de pieza | N4374B | |
| Descripción | 4.5 GHz Single-Mode Lightwave Component Analyzer | |
| Fabricantes | Agilent(Hewlett-Packard) | |
| Logotipo | .gif "Agilent(Hewlett-Packard)"){kind=logo} |
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Agilent
N4374B
4.5 GHz Single-Mode
Lightwave Component Analyzer
for CATV and Radio over Fiber
Data Sheet
www.DataSheet4U.com
1 page  
Definitions
Explanation of terms
Generally, all specifications are valid at the stated operat-
ing and measurement conditions and settings, with uninter-
rupted line voltage.
Specifications (guaranteed)
Describes warranted product performance that is valid under
the specified conditions.
Specifications include guard bands to account for the ex-
pected statistical performance distribution, measurement
uncertainties changes in performance due to environmental
changes and aging of components.
Typical values (characteristics)
Characteristics describe the product performance that is
usually met but not guaranteed. Typical values are based on
data from a representative set of instruments.
General characteristics
Give additional information for using the instrument. These
are general descriptive terms that do not imply a level of
performance.
Responsivity
For electro-optical devices (e.g. modulators ) this describes
the ratio of the optical modulated output signal amplitude
compared to the RF input amplitude of the device.
For opto-electrical devices (e.g. photodiodes) this describes
the ratio of at the RF amplitude at the device output to the
amplitude of the modulated optical signal input. .
Relative frequency response uncertainty
Describes the maximum deviation of the shape of a mea-
sured trace from the (unknown) real trace. This specification
has strong influence on the accuracy of the 3-dB cut-off fre-
quency determined for the device under test.
Absolute frequency response uncertainty
Describes the maximum difference between any amplitude
point of the measured trace and the (unknown) real value.
This specification is useful to determine the absolute re-
sponsivity of the device versus modulation frequency.
Frequency response repeatability
Describes the deviation of repeated measurement without
changing any parameter or connection relative to the aver-
age of this measurements.
Minimum measurable frequency response
Describes the average measured responsivity when no mod-
ulation signal is present at the device under test. This repre-
sents the noise floor of the measurement system.
Definition of LCA input and output names
www.DataSheet4U.com
LCA electrical port A
LCA electrical port B
LCA optical output LCA optical input
5
5 Page 
Specifications for opto-electrical measurements at 1550 nm
N4374B system with network analyzer
E5071C -245
(O/E mode)
Specifications are valid under the stated measurement conditions.
With external optical source input all specifications are typical [f2][f6][f7]
For wavelength:
(1550 ±20) nm (option -101, 102)
System performance
Relative frequency
response
uncertainty[f2]
DUT response
≥ -36 dB(A/W) [f1]
Absolute frequency
response uncertainty
≥ -46 dB(A/W)
DUT response
≥ -36 dB(A/W) [f1]
Frequency response DUT response
repeatability (typ.) [f2] ≥ -46 dB(A/W) [f1]
Minimum measurable frequency
response (noise floor ) [f2] [f3] [f5]
Phase uncertainty
(typ.) [f2][f4]
DUT response
≥ -36 dB(A/W) [f1]
Group delay uncertainty
10 MHz to 50 MHz 50 MHz to 0.7 GHz 0.7 GHz to 4.5 GHz
±0.5 dBe typ.
±0.5 dBe typ.
±0.7 dBe
(±0.5 dBe [f8] )
±0.5 dBe typ.
±0.8 dBe
(±0.6 dBe [f8] )
±0.6 dBe typ.
±1.2 dBe typ
±2.0 dBe
(±1.2 dBe [f8] )
±2.1 dBe
(±1.2 dBe [f8] )
±0.02 dBe
-83 dB(A/W) typ.
±0.02 dBe
-92 dB(A/W)
±0.03 dBe
-90 dB(A/W)
- ±1.0°
Derived from phase uncertainty, see section
“Group delay uncertainty”.
Example: ±1.0° → ±8 ps (0.5 GHz aperture)
±1.0°
[f1] For DUT response max. +10 dB (A/W).
[f2] For +4 dBm average output power from LCA optical output
[f3] IFBW = 100 Hz.
[f4] 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).
[f5] Average value over frequency range.
[f6] After CW responsivity and user calibration with external source.
[f7] Requires option -101 or -102.
[f8] Typical with internal source.
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| Páginas | Total 18 Páginas | |
| PDF Descargar | [ Datasheet N4374B.PDF ] | |
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