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Keysight N4391A/N4392A Optical Modulation Analyzer, Getting Started
5
Technical Specifications
Data acquisition (for Keysight 90000-X and 90000-Q series oscilloscopes)
Sample rate
Up to 80 GSa/s on each channel
Data acquisition bandwidth
16/20/25/32 GHz upgradable
Jitter between channels
Typ 700 fs
Noise
0.6 mV rms @ 10 mV range, 32 GHz bw
ADC resolution
8 bit/16 bit (interpolated)
Sample memory per channel
Up to 2 Gs/channel
Local oscillator (guaranteed specification if not mentioned otherwise)
Option -500, 501
Option -510
Wavelength range
Option 500
1527.6 to 1565.5 nm (196.25 to 191.50 THz)
1528 nm to 1630 nm
Option 501
1570.0 to 1608.8 nm (190.95 to 186.35 THz)
Minimum wavelength step
25 GHz
1 pm
Tuning time/sweep speed
< 30 s
50 nm/s
Absolute wavelength accuracy
±
22 pm
±
20 pm,
±
5 pm typical
Stability (short term)
100 kHz
100 kHz
Sidemode suppression ratio
50 dB typical
≥
50 dB
RIN
−
145 dB/Hz (10 MHz to 40 GHz) typical
−
145 dB/Hz (0.1 to 6 GHz) typical
High resolution spectrometer
Maximum frequency span
31.25/40/50/62.5 GHz
LO wavelength range
1528 nm to 1630 nm
Image suppression
> 35 dB
Number of FFT points
409601
Minimum RBW (record length 10^6 points)
4 kHz
Signal to noise ratio
60 dB @ 7.5 dBm signal input power
Frequency accuracy
Absolute
±
5 pm
Summary of Contents for N4391A
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