Symmetricom EDGE CLOCK 1000 - Manual (Page 46)

Chapter 2 Engineering and Ordering Procedures
Shelf
46 TimeProvider User’s Guide 097-58001-02 Revision G – April 2008
Shelf
The TimeProvider is available in two configurations: Model 1000 Front Access and
Model 1100 Rear Access.
Model 1000 Front Access
The ETSI-style shelf (990-58001-01) complies with ETSI 300-119 shelf projections.
Each shelf accepts one IMC or IMC/TPIU and one or two IOCs; the shelf also
supports one Input module and from one to four Output modules. Each Output
module terminates eight output timing signals. Alarms terminate on wire-wrap or
DB-25 connectors, depending on the Input module used. The minimum
configuration is one IMC or IMC/TPIU and one IOC for non-protected operation.
Using two IOC modules provides protection in case one of the IOC modules fail.
See
Table 2-5 for part numbers for front-access shelf systems.
Model 1100 Rear Access
The NEBS-style shelf (990-58101-01) accepts one IMC or IMC/TPIU and one or two
IOCs; the shelf also supports one Input module and from one to four Output
modules. Each Output module terminates eight output timing signals. Alarms
terminate on wire-wrap or DB-25 connectors, depending on the Input module used.
The minimum configuration is one IMC or IMC/TPIU and one IOC for non-protected
operation. Using two IOC modules provides protection in case one of the IOC
modules fail. See
Table 2-5 for part numbers for rear-access shelf systems.
Expansion Panel
The available Expansion Panel provides additional outputs from the main shelf. Like
the main shelf, it comes in two configurations: Model 1000 Front Access and Model
1100 Rear Access. The Expansion Panel supports up to 32 additional output
channels. Both panel kits contain rack mounting ears and extenders for 19-inch and
23-inch racks.
Front Access
The front-access Expansion Panel (part number 990-58002-01) provides an
additional 32 outputs, for a system total of 64 outputs. The ETSI-style Expansion
Panel supports up to four additional Output Modules with various connector types;
each Output Module provides up to eight output signals. See
Table 2-2 for part
numbers for Output modules.