Keysight M8290A Getting Started Manual page 51

Keysight M8290A Getting Started Guide
External local oscillator input and output (Option 800)
LO input wavelength range
LO input power range
LO output power
1 128 samples are unavailable, resulting in 511872 samples per channel effectively
available.
2 Valid at EVM = 32.5% for 32 GBaud DP-QPSK corresponding to raw BER = 1E-3,
boost mode off.
3 At maximum laser power.
4 Adjusted baseband frequency range available for signal analysis.
5 Valid at the following reference conditions
• Sampling rate 92 GSa/s
• Optical continuous wave signal at optical input port
• Signal power > 0 dBm
• Optical frequency is offset by 2.5 GHz from local oscillator frequency
• Vector analyzer I-Q spectrum span set to 12.5 GHz
• QPSK demodulation
• 10 Gbaud symbol rate
• PolStokesAlign set to "Single Polarization"
• KFPhaseTrack with carrier phase variance set to 1E-4
• Result length set to 500 symbols
• Raised cosine filter selected as reference filter
• 25° C ±5 K environmental temperature
6 Valid at reference conditions as stated above, except for:
• Optical frequency is offset by 10 GHz from local oscillator frequency
• Vector analyzer I-Q spectrum span set to 50 GHz
• 40 Gbaud symbol rate
Table 5 M8292A Modular Optical Modulation Analyzer specifications (Continued)
Trigger input
Input range
Threshold
Range
Resolution
Specifications
1527.60 to 1570.01 nm
–3 dBm to +17 dBm
> +9 dBm
Typical values
–4 V to +4 V
–4 V to +4 V
10 mV
100 mV
6
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