Symmetricom 1100 User Manual

Chapter 3 Installing the TimeProvider

Expansion Panel
All connections to the Expansion Panel, including chassis ground, are made using 
the interconnection cable.

 

To install the TimeProvider power connections:

1. Assemble a power connector appropriate for the type of shelf. 

lists the 

pin-out for each type of connector. 

Rear-access shelf: Crimp a No. 16 AWG (minimum) wire (1.31 mm

2

) to a spade 

lug, then slide the spade lug under the terminal and tighten. 

Front-access shelf: Assemble the power connector as shown in 

. 

Solder a No. 16 AWG (1.31 mm

2

) (minimum) wire to each pin. Slip the 

appropriate grommet over the wires, and screw the shell together.

2. Attach the connector to the Power A and Power B connectors on the shelf.

Electrical Shock Caution: To avoid possible injury from shock, 
make sure that the fuses are removed from the fuse panel or 
power supply before connecting or applying power to the unit.

Warning: For continued fire protection, replace power supply 
fuse(s) with the specified type and a 5 A rating. There are no 
user-serviceable fuses in the TimeProvider shelf.

This unit must be grounded. 

Refer all servicing to qualified personnel.

48 Volt Negative Lead

1

Frame Ground

1

48 Volt Positive Lead (return)

2

48 Volt Negative Lead

2

48 Volt Positive Lead (return)

3