Telect MIX 56 User Manual

1.

Verify the power source is unfused.

2.

As instructed in the fol-
lowing paragraph, con-
nect office battery and 
return (20Vdc to 60Vdc) 
to the screw-down wire-
binding connectors la-
belled “A” at either top-
rear corners of the chas-
sis.  For example, for a 
-48V dc plant, connect -48V to -A and RTN to +A; for a +24V 
plant, connect +24V to +A and RTN to -A. 

Loosen the set screws for each, insert the wires, and tighten the 
screws. 

3.

To ensure power redundancy, repeat Step 2 for Side B using a sepa-
rate power source. If you are not using a second source, connect 
Side B to the same source as Side A to avoid triggering an alarm.

4.

If a mating connector is used, insert the connector into the recepta-
cle and tighten the two screws until the connector is securely in 
place.

5.

Fuse the power source to supply power to the chassis.

The optional RJ Connector Retrofit (part # 747-9999-2848) is a one piece 
unit that converts a system’s wire-wrap pin blocks into 28 RJ-48 connec-
tors. To install the unit, you must remove the wire-wrap door and its retain-
er clip, and install a mounting post on each side of the pin blocks, as de-
scribed on the following pages.

Universal Service Order Code (USOC):  RJ-48C

Electrical Network Connection:  Tip/Ring and Tip1/Ring 1

Mechanical Arrangement:  8-position miniature modular jack

Usage:  1.544 Mb/s digital access lines

+B

–B

+A

–A