Vertical comdial DX-120, Installation And Maintenance Manual

Page: 52 / 146

I
NSTALLING THE
DX-120
DX-120 Installation and Maintenance Manual
- 46 -
KSU Wiring
The 408M/E, APM4, COM4, and DPM8 are equipped with RJ-11 modular jacks for each of the interfaced ports.
This connection scheme allows for two methods of installation. The first method (traditional “MDF”) is
recommended whenever possible to allow for maximum serviceability.
CAUTION
System power must be OFF before you plug in the station cable or while servicing port
connections at the punch-down block (66M1-50). Although each port is over-current
protected, unnecessary shorting should be avoided.
E
XTENDING
P
ORTS TO THE
MDF
•
Whenever you extend the various ports of the DX-120 to the MDF, you must extend modular-ended cables
from the KSU module port to the MDF connection block. You have many choices when completing these
connections; it is left to the your discretion to use the most suitable industry-standard wiring practice for the
particular installation.
CAUTION
Use a quality crimping tool to fasten the modular connector to the cable pair when using
field-crimped modular connectors. Use of an inferior crimping tool can lead to bad
connections.
•
Many third-party vendor products are available to aid in this installation procedure. The following examples
are readily available at communications equipment / accessories supply houses. Although this example
denotes product of The Siemon Company®, you are urged to investigate the various products available and
make decisions for use based on your own assessment. Vertical is not responsible for the performance of
any product provided by a third-party (outside) vendor.
EXAMPLE
The examples in the following chart are 25 pair (UTP), USOC, 24 AWG cables
pre-fitted with modular connectors on one end of the cable, and a male or female
AMP® type connectors on the other end for termination on a specially equipped,
66-block with mating AMP® type connector.
•
When you are finished with the KSU wiring, you can individually isolate each port of the DX-120 system for
independent maintenance needs. Terminate the wiring in place onto a 66M1-50 – connector block. Extend
ports from this connector block to station cables using standard jumper wire.
The Siemon Company® Hydra Cable Assemblies
Product Number Length (feet) Wiring Scheme - End 1
HYD-F-24U1-03 3 25-Pair, Female
HYD-F-24U1-07 7 25-Pair, Female
HYD-F-24U1-10 10 25-Pair, Female
HYD-M-24U1-03 3 25-Pair, Male
HYD-M-24U1-07 7 25-Pair, Male
HYD-M-24U1-10 10 25-Pair, Male