Atec Anritsu_MS9720A - Manual (Page 9)

9
WDM Waveform Analysis
A major problem of WDM transmission systems is the sig-
nal-to-noise ratio (SNR) of each signal channel. Quantitative
measurement and evaluation of SNR is extremely important
in WDM transmission systems. The MS9720A can analyze
up to 128 WDM waveforms and display the peak wave-
length, level and SNR of each channel.
Wide-Bandwidth, High-Output SLD Light Source
The following screen shows the output spectrum of the SLD
from 1450 to 1650 nm. At 1550 nm and a resolution of 1 nm,
the output level is –40 dBm min. A dynamic range of approx.
50 dB can be measured with setting the VBW 10 Hz.
The screen below shows analysis of a 16-channel WDM
waveform; the level difference of each channel is displayed
using the channel on the left side as a reference. Any chan-
nel can be set as the reference.
VGA Output Connector
A VGA output connector is provided on the rear panel
of the MS9720A for displaying the measurement
screen on a PC monitor.