Vertical comdial DX-120, Руководство по установке и обслуживанию

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I
NSTALLING THE
DX-120
DX-120 Installation and Maintenance Manual
- 52 -
KSU Components (continued)
A
DDING A
DPM8
You can add two DPM8 modules to each KSU of the DX-120 system. These modules expand the DX-120 system
capacity to a maximum of 24 digital ports in each KSU, for a total of 48 total digital ports.
To install a DPM8, connection to the 408M/E via the Extension Expansion module connectors J2 and J3. These
connectors have the logical system address of SLOT 2 and SLOT 3 in both cabinet 1 (KSU1-408M) and cabinet 2
(KSU2-408E).
NOTE
You can connect both APM4 and DPM8 modules to the system via these two
connectors. Install the DPM8 using four 2.0 cm brass color standoffs included
with the DPM8 module.
INSTALLING THE DPM8
1) Be sure that the entire system is turned off.
2) Remove the KSU cover (four screws at each corner).
3) Install a static discharge wrist strap on your bare wrist, and adjust it for a snug fit.
CAUTION
Be sure that the strap is touching bare skin and is not isolated by clothing.
4) Connect the wrist strap cord between the wrist strap and an AC or earth ground.
5) Connect a static discharge wrist strap to a suitable earth ground.
CAUTION
Circuit boards are susceptible to damage caused by electrostatic
discharge. You must keep this in mind as you handle the circuit boards.
For additional information, see Vertical publication IMI01-005, Handling of
Electrostatically Sensitive Components.
6) Remove the DPM8 module from the packaging and locate the four brass-color standoffs packaged
with the module.
Installing the DPM8 (continued on next page)
DPM8 Extension Number Matrix Per Installed Location
KSU Connector Used Extension Numbers in KSU1 Extension Numbers in KSU2
J2 Extension Expansion 109,110,111,112,
113,114,115,116
173, 174, 175, 176,
177, 178, 179, 180
J3 Extension Expansion 125, 126, 127, 128,
129, 130, 131, 132
189, 190, 191, 192,
193, 194, 195, 196