Spectracom VelaSync 1225, User Manual

Page: 47 / 272

2.7.3 Subnet Mask Values
Table 2-1:
Subnet mask values
Network Bits Equivalent Netmask Network Bits Equivalent Netmask
30 255.255.255.252 18 255.255.192.0
29 255.255.255.248 17 255.255.128.0
28 255.255.255.240 16 255.255.0.0
27 255.255.255.224 15 255.254.0.0
26 255.255.255.192 14 255.252.0.0
25 255.255.255.128 13 255.248.0.0
24 255.255.255.0 12 255.240.0.0
23 255.255.254.0 11 255.224.0.0
22 255.255.252.0 10 255.192.0.0
21 255.255.248.0 9 255.128.0.0
20 255.255.240.0 8 255.0.0.0
19 255.255.224.0
2.8 Advanced Timing Connections
Figure 2-6:
TSync timing card connections
2.8.1 TSync I/O Signals
The updated VelaSync holds a factory-installed TSync timing card which contains a
GPS/GNSS antenna connection, status LED's, and a 25 pin Micro D-Sub connector.
The Micro D-Sub connector can be expanded into different configurations by use of the
adapter cable and standard breakout cable.
2.8 Advanced Timing Connections
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