User's Manual

MM-015039-001, Rev. H
34
DC-powered MASTR V sites may use the enhanced DC Power Distribution Blocks, models
EA-555019-003 (low power) and EA-555019-004 (high power). Similar in function to the DC Power
Distribution blocks shown in Figure 4-13 and Figure 4-14, the enhanced versions include connector
assemblies for the DC input connections. The addition of DC input connectors provide ease of
installation and improves performance of the MASTR V DC distribution.
Figure 4-15: EA-555019-003 – Enhanced -48 VDC Low Power DC Distribution Strip
Figure 4-16: EA-555019-004 – Enhanced -48 VDC High Power DC Distribution Strip
4.3.8 Cross-Connect Panel
The MASTR V IP Cross-connect panel, model number EA-555016-002, includes printed circuit board
CB-555149-002 and a 2-RU high metal frame for accommodating 19-inch rack mounting the board. One
of more Cross-connect panels is installed at all MASTR V P25 sites. Additional cabling at the Cross-
connect panel is installed when a site is setup to support Phase 2.
- - - P25 Trunked Phase 2 Operation - - -
 Cross-connect panels are installed at all MASTR V P25 Phase 2 equipped trunked
sites which use two (2) or more Baseband modules.
 Additional cabling is installed at the Cross-connect panel to support P25 Phase 2.
The Cross-connect board provides distribution of timing signals between two (2) or more Baseband
modules at a site. It also provides distribution of timing signals between two (2) or more racks or
cabinets containing MASTR V transceiver shelves.
The timing signals passing through the Cross-connect board to each Baseband module are used to
synchronize operations between each RF channel and ensure smooth transition between Control Channel,
Working Channel, and timeslot operations.
NOTE