Aide sur DATASHEET

[invitec35bc9ea]

bonjour,
je cherche à comprendre ces deux datasheets. certaines caracteristiques sont claires, d'autres le sont moins.

INPUT
ADC Resolution (Analog AAF): 24 bits
Sample Resolution (Digital AAF): 32 bit floating point
Coupling: AC/DC, Diff., SE, ICP
Anti-alias Filters: 100 dB protection, all ranges
Dynamic Range: 110 dB
Input Ranges: 0.1, 1.0, 10.0 V Full Scale
Input Impedance: 100 kΩ symmetric for Diff.; 100 kΩ with 50Ω shield to GND for SE
Max Input Voltage: 80vPeak, 2.5vRmsShield (SE)
CMRR: 60 dB (typical), f<40 kHz
Amplitude Accuracy: +/- 0.020dB (0.2%FS) at 1kHz for 15degC < T < 40degC
Amplitude Ripple: (Digital AAF) - 0.005dB for 0 < f < fS / 2.56
Amplitude Droop: (Analog AAF) - 0.005dB at 5kHz; 0.010dB at 25kHz; 0.050dB at 49kHz
Residual Offset: +/- 0.1% FS AND not larger than 3mvDC
Phase Accuracy: 0.05deg to 0.5deg for DC to 40kHz
Crosstalk between Inputs: <-100 dB
Crosstalk between inputs and source:< -90 dB
THD: 100 dB @ 1 kHz
Minimum SampleRate: less than 1Sps
Maximum SampleRate: 204.8 kHz
Maximum useful Frequency: 40 kHz standard, 93 kHz optional
Frequency Accuracy: 25ppm
Time Accuracy: 25ppm
TACHO
Max. Frequency: 200 kHz
Input Range: +/-24 V FS
Adjustable threshold, holdoff, prescaling

FREQUENCY MEASUREMENT
Frequency Span
Frequency Range: 150kHz to 1300 MHz
Setting Modes: Centre frequency plus Span,
or Start plus Stop frequencies
Maximum Span: 1299.85 MHz
Minimum Span: 320 kHz, or Zero Span with
demodulation
Setting Resolution: 1 kHz at any frequency
Setting Accuracy: Reference Frequency Accuracy
for Start, Stop & Centre
(Zero-Span) frequencies
Reference Frequency Accuracy
Initial Accuracy: Better than ± 10 ppm at 20 oC
Stability: Better than ± 10 ppm
over 10 oC to 30 oC
Ageing: Better than ± 3 ppm per year
Phase Noise
Phase Noise: Typically -100dBc/Hz at 100kHz
offset at 500MHz
Resolution Bandwidth
RBW: Selectable 280 kHz or 15 kHz
Video Filtering: Selectable independently of RBW
setting
Markers
No. of Markers: One, Two (or None)
Marker Resolution: 0.1 kHz at all frequencies
Marker Accuracy: 1/320th of Span ± 0.1kHz plus reference
frequency accuracy.
Readout: The frequencies at the marker
points and the frequency difference
are displayed
AMPLITUDE MEASUREMENT
Amplitude Range
Display Range: 80 dB
Reference Level: Selectable as -20 dBm or 0dBm
Amplitude Accuracy
Ref. Level
Accuracy:
Better than ± 1 dB at 50MHz
(20oC ± 5oC)
Flatness: Better than ± 1.5 dB over 0.5MHz
to 1300MHz
Linearity: Better than ± 1 dB over 50dB from
reference level
Noise Floor: Better than -90 dBm average displayed
noise floor
(reference level = -20 dBm, RBW
= 15 kHz)
Distortion and Spurii
3rd Order Intermod.:< –60dBc for two signals at 10dB
below reference level (500MHz
and 501MHz)
Harmonic: < –60dBc at 10dB below reference
level (100MHz)
1st & 2nd Image: <– 55dBc, typically <– 60dBc
Residual Spurii: Below noise floor
Markers
No. of Markers: One, Two (or None)
Resolution: 0.1 dB
Readout: The level at the marker points and
difference are displayed.
SWEEP
Sweep Method: Peak detection for 320 points per
sweep. The amplitude and frequency
of the peak level found
within each sub-span is stored
(sub-span = span/320).
Sweep Time: Set automatically by Span and,
RBW.
Sweep Modes: Normal (continuous), Single, Peak
Hold, Average (2 to 256).
Sweep Control: Run and Stop buttons. Peak-hold
and Average are reset whenever
Run is pressed.
SIGNAL INPUT
Input Connector: SMA connector, 50

VSWR: 1.5 : 1 typical
Maximum Level: + 20 dBm

ADC Resolution (Analog AAF): 24 bits

resolution du convertisseur analogique numerique

Sample Resolution (Digital AAF): 32 bit floating point

quelle difference avec ce qui percede?

Coupling: AC/DC, Diff., SE, ICP

Diff et ICP, je comprends. les autres pas trops

Anti-alias Filters: 100 dB protection, all ranges

?

Dynamic Range: 110 dB

?

Input Ranges: 0.1, 1.0, 10.0 V Full Scale

plage de tensions acceptées?

Input Impedance: 100 kΩ symmetric for Diff.; 100 kΩ with 50Ω shield to GND for SE

impedence d'entrée. comment ça se fait que ça change d'un couplage à un autre?

Max Input Voltage: 80vPeak, 2.5vRmsShield (SE)

tensions max

CMRR: 60 dB (typical), f<40 kHz

?

Amplitude Accuracy: +/- 0.020dB (0.2%FS) at 1kHz for 15degC < T < 40degC

?

Amplitude Ripple: (Digital AAF) - 0.005dB for 0 < f < fS / 2.56

?

Amplitude Droop: (Analog AAF) - 0.005dB at 5kHz; 0.010dB at 25kHz; 0.050dB at 49kHz

?

Residual Offset: +/- 0.1% FS AND not larger than 3mvDC

?

Phase Accuracy: 0.05deg to 0.5deg for DC to 40kHz

?

Crosstalk between Inputs: <-100 dB

?

Crosstalk between inputs and source:< -90 dB

?

THD: 100 dB @ 1 kHz

?

Minimum SampleRate: less than 1Sps

?

Maximum SampleRate: 204.8 kHz

?

Maximum useful Frequency: 40 kHz standard, 93 kHz
optional

freq max

Frequency Accuracy: 25ppm

?

Time Accuracy: 25ppm

?

TACHO
Max. Frequency: 200 kHz
Input Range: +/-24 V FS

freq et tensions max

Adjustable threshold, holdoff, prescaling

?
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[invitec35bc9ea]

FREQUENCY MEASUREMENT
Frequency Span
Frequency Range: 150kHz to 1300 MHz
Setting Modes: Centre frequency plus Span,
or Start plus Stop frequencies
Maximum Span: 1299.85 MHz
Minimum Span: 320 kHz, or Zero Span with
demodulation
Setting Resolution: 1 kHz at any frequency
Setting Accuracy: Reference Frequency Accuracy
for Start, Stop & Centre
(Zero-Span) frequencies
Reference Frequency Accuracy
Initial Accuracy: Better than ± 10 ppm at 20 oC
Stability: Better than ± 10 ppm
over 10 oC to 30 oC
Ageing: Better than ± 3 ppm per year
Phase Noise
Phase Noise: Typically -100dBc/Hz at 100kHz
offset at 500MHz
Resolution Bandwidth
RBW: Selectable 280 kHz or 15 kHz
Video Filtering: Selectable independently of RBW
setting
Markers
No. of Markers: One, Two (or None)
Marker Resolution: 0.1 kHz at all frequencies
Marker Accuracy: 1/320th of Span ± 0.1kHz plus reference
frequency accuracy.
Readout: The frequencies at the marker
points and the frequency difference
are displayed
AMPLITUDE MEASUREMENT
Amplitude Range
Display Range: 80 dB
Reference Level: Selectable as -20 dBm or 0dBm
Amplitude Accuracy
Ref. Level
Accuracy:
Better than ± 1 dB at 50MHz
(20oC ± 5oC)
Flatness: Better than ± 1.5 dB over 0.5MHz
to 1300MHz
Linearity: Better than ± 1 dB over 50dB from
reference level
Noise Floor: Better than -90 dBm average displayed
noise floor
(reference level = -20 dBm, RBW
= 15 kHz)
Distortion and Spurii
3rd Order Intermod.:< –60dBc for two signals at 10dB
below reference level (500MHz
and 501MHz)
Harmonic: < –60dBc at 10dB below reference
level (100MHz)
1st & 2nd Image: <– 55dBc, typically <– 60dBc
Residual Spurii: Below noise floor
Markers
No. of Markers: One, Two (or None)
Resolution: 0.1 dB
Readout: The level at the marker points and
difference are displayed.
SWEEP
Sweep Method: Peak detection for 320 points per
sweep. The amplitude and frequency
of the peak level found
within each sub-span is stored
(sub-span = span/320).
Sweep Time: Set automatically by Span and,
RBW.
Sweep Modes: Normal (continuous), Single, Peak
Hold, Average (2 to 256).
Sweep Control: Run and Stop buttons. Peak-hold
and Average are reset whenever
Run is pressed.
SIGNAL INPUT
Input Connector: SMA connector, 50

VSWR: 1.5 : 1 typical
Maximum Level: + 20 dBm

je ne comprends quasiment rien.
merci

[alayn91]

Bonjour,

Ouf !!

Voir les fichiers joints.

Les premières specs semblent appartenir à un analyseur de spectre BF, par FFT.

Les secondes semblent correspondre à un analyseur de spectre RF, ancienne génération.

Si questions, il y a, elles devront être pertinentes et correstement formulées.

Salutations.
Alain.

[invitec35bc9ea]

Merci alayn91,
au final je ne m'interesse qu'au premier analyseur. d'ailleur à quoi à tu reconnu que c'etait un analyseur de frequence, et pas juste une carte d'acquisition?
quelle difference entre resolution CAN et resolution echantillon? je croyais qu'un CAN est justement un echantilloneur/ bloqueur non?
c'est quoi un coublage AC/DC et asysmetrique?

Filtres anti-repliement: 100 dB, sur toutes les gammes.

les 100dB ça represente quoi?

Gamme dynamique: 100 dB.

gamme dynamique de 100dB, ça veut dire quoi?

Gammes d’entrée: 0.1, 1.0, 10V pleine échelle.

ça c'est clair

Impédance d’entrée: 100 kΩ symétrique différentiel, 100 kΩ avec 50 Ω à la masse pour l’asymétrique;

j'attends de voir ce que c'est que les couplage symetrique et asymetrive pour dire si j'ai bien compris ou pas.

Tension d’entrée max: 80V crète, 2.5 V eff blidage( asymétrique)

2.5 V eff blidage( asymétrique) j'ai pas compris

Taux de rejection du mode commun: 60 dB typique, f< 40 kHz.
Précision en amplitude: +/- 0.020dB(0.2% pleine echelle) à 1 kHz, pour 15°C < T < 40°C.
Ondulation d’amplitude: (filtre anti-repliement numérique): 0.005dB pour 0 < f échantillonage/256.
Perte d’amplitude(filtre anti-repliement analogique): 0.005dB à 5kHz; etc.
Tension décalge résiduelle: +/- 0.1% pleine échelle et inférieure à 3mV continu.
Précision de phase: 0.05 degré à 0.5 degré du continu à 40 kHz.
Diaphonie entrées: <-100dB.
Distorsion harmonique totale: 100bD @ 1 kHz.

Désolé mais je n'ai rien compris à tout ça

Vitesse d’échantillonnage minimum: < 1 échantillon/s.
Vitesse d’échantillonnage max: 204.8 kHz.
Fréquence utile max: 40 kHz standard, 93 kHz en option.

c'est clair

Précision en fréquence: 25 ppm(part per million=E10-6)
Précision temporelle: 25 ppm.

pas vraiment saisi

Fréquence max: 200 kHz.
Gamme d’entrée: +/- 24 V pleine échelle.

c'est clair.

Déclenchement, interdiction de déclenchement, mise à l’échelle réglables.

pas trops.

merci

[A voir en vidéo sur Futura]

[alayn91]

Bonjour,

Réponses.

Salutations.
Alain.

[invitec35bc9ea]

bonsoir Alyn91, desolé de n'avoir donné réponse plus tot. je n'avais meme pas internet etant donné les circonstances.
d'abord je voulais te dire ma gratitude pour toute ton aide. ces derniers temps j'ai eu quelques soucis de santé, j'avais donc d'autres priorités. je dois encore régler ces soucis, et en revenant en pleine forme, j'espère, j'éplucherais tous tes précieux manuscrits.
merci