Crystal Instruments Spider - Page 401

Spider DSA User’s Manual
401
The plot below shows the phase match curve (not very good) between two
modules using a regular switch. The linear phase slope indicates a group delay
between the two channels (of two different modules) compared.
The plot below shows the phase match (very good) between the same two
hardware devices using a Spider-HUB switch.
0.0001
0.001
0.01
0.1
1
10
0 1 2 3 4 5 6 7 8 9 10
Phase Match, Degrees
Frequency (kHz)
Synchronization Phase Match
Spider-HUB (20 ns)
Cisco IE-3000 (40
ns)