Symmetricom manual Shelf, Expansion Panel, Model 1000 Front Access, Model 1100 Rear Access

Chapter 2 Engineering and Ordering Procedures

Shelf

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 2-5for 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 2-5for 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 2-2for part numbers for Output modules.

46 TimeProvider User’s Guide 097-58001-02 Revision G – April 2008