System Power; The Timeprovider Interface Unit (Tpiu); Typical Power Consumption - Symmetricom EDGE CLOCK 1000 User Manual

Output Module
The Output module provides the output connectors for the TimeProvider. Like the
Input module, each Output module uses one of a variety of connectors that match
the wiring system at the installation site.
describes the Output Modules available for the TimeProvider and the Expansion
Panel.
Expansion Panel
The Expansion Panel provides up to 32 additional outputs that the TimeProvider
can generate. See
for more information.
TimeProvider Interface Unit
The TimeProvider Interface Unit (TPIU) provides power, communication, and a
composite timing reference signal between the antenna and the TimeProvider main
shelf. The TPIU is an external, stand-alone rack mounted assembly included in
Antenna Kits 990-58545-01 and 990-58545-02. The TPIU can be used only with
IMC card 090-58031-01. During antenna installation, you can use the LEDs on the
TPIU to detail the status of the received power and antenna communication. See
Making GPS

System Power

The TimeProvider main shelf has redundant –48v DC inputs. The inputs are diode
or'd; in the event that one supply fails, the other takes over. The –48v returns are
isolated from the chassis and circuit grounds. A 5 A fuse on the IOC protects the
TimeProvider; the shelf is protected from damage in case the connections are
reversed.
The power supply range is from –36 to –72 V DC. The power requirements vary
according to the type of IOC installed;
Table 1-1. Typical Power Consumption
IOC Type
Crystal
Rubidium
The procedure for installing power is described in
page 61.
097-58001-02 Revision G – April 2008
Expansion Panel, on page 21 and
Connections, on page 71 for more information.
Max Power (W)
per IOC
40
60
Chapter 1 Overview of the TimeProvider
Making Output Connections, on page 66,
Rack
Table 1-1 lists the power requirements.
Typical Power (W)
per IOC
30
40
(70 with two Rb IOCs)
Making Power
System Power
Mounting, on page 56
Connections, on
TimeProvider User's Guide 33