Specifications

DXP Correspondence Manual Installing The DXP
3.3
Mounting The
Expansion
Cabinet
Grounding
3.4
The
System
The installation of the expansion cabinet is basically identical to that
of the main cabinet. The mounting screws for the expansion cabinet
are 18 s/r6 inches apart. You must always install the expansion cabinet
above the main cabinet-no exceptions. Remember that you need to
keep the two cabinets within two inches of one another to connect the
cable for the two interface boards. Once you have secured both
cabinets to the MDF, you need to ground them to an earth-ground (see
section 3.4, Grounding The System).
The DXP system has internal secondary surge protection on all line
ports, and in order for this protection to be effective, you must connect
the cabinets to a reliable earth ground such as a metal cold water pipe
or a building frame ground. The ground stud is located on the side of
the main cabinet. You can use # 10, or #12 gauge solid copper wire
for grounding.
Run the ground wire from the expansion cabinet down to the main
cabinet and finally to the earth ground. Ideally, the grounding wire
should be shorter than 20 feet. Grounding the system provides
secondary line surge protection, and AC surge protection; it also
serves as the ground for ground start, DID, and E and M tie lines. (For
information on primary surge protection devices, see Section 3.8,
Installing The Lines).
Installing The DXP 3 - 3