Vertical comdial DX-120, Installation And Maintenance Manual

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DX-120 Installation and Maintenance Manual
I
NSTALLING THE
DX-120
Adding an External Pager
One port is provided at the CPM of the DX-120 system for use with external paging system apparatus.
•
When DX-120 users dial the external pager code (“777” at default) or dial the Tenant Group All Page code
(“400” at default), voice announcements can be made over the external paging equipment.
•
The DX-120 External Page port does not provide any amplification. Interface at the amplifier should be
matched to approximately 600 ohms for the best performance.
E
XTERNAL
P
AGER
I
NSTALLATION
P
ROCEDURE
1) Be sure that the entire system is turned off.
2) Remove the KSU 1 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
7.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) Locate the CPM and “PAGE” connector jack on the CPM.
7) Using an eighth-inch mini plug, connect the DX-120 Page port to the external amplifier input.
8) Adjust the voice volume level at the external paging amplifier.
HINT
When adjusting the volume level:
• Dial access to the External Pager port at any DX-120 telephone (“777”).
• Adjust the volume control associated to the amplifier input selected for this
purpose.
External “Page” connector
(goes to external amplifier)