Keysight Technologies 86120B, User Manual

Page: 239 / 273

237
Specifications and Regulatory Information
Specifications
Selectivity
Two lines input separated by
≥
100 GHz (characteristic)
25 dB (characteristic)
Two lines input separated by
≥
30 GHz (characteristic) 10 dB (characteristic)
Input Power
Maximum displayed level (sum of all lines)
+10 dBm
Maximum safe input level (sum of all lines) +18 dBm
Maximum Number of Laser Lines Input 100
Input Return Loss
With flat contacting connectors 35 dB
With angled contacting connectors (Option 022) 50 dB
Measurement Cycle Time
Normal update mode (characteristic) 1.0 s (1 measurement-per-second)
Fast update mode (characteristic) 0.33 s (3 measurements-per-second)
Measurement Applications
Signal-to-Noise, channel spacing 200 GHz (characteristic)
>35 dB (0.1 nm noise bandwidth), lines above
–25 dBm
Signal-to-noise with Averaging, modulated lasers, 100 averages,
channel spacing 200 GHz (characteristic) >35 dB (0.1 nm noise bandwidth) lines above -
25 dBm
Coherence Length (characteristic) Fabry-Perot lasers, 1 to 200 mm coherence
length, accuracy
±
5%, 0.75s cycle time