I
NSTALLING
THE
DX-120
DX-120 Installation and Maintenance Manual
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Adding an APM4
You can add one APM4 to KSU1 and two APM4’s to the KSU2. These modules expand the DX-120 system
capacity to a maximum of eight analog ports in each KSU (16 total analog ports when used in both KSU1 & KSU2).
•
When adding an APM4 to KSU1, connect to the 408M via an available Extension Expansion module
connector (either “J2” or “J3” but not both).
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These connectors have the logical system address of SLOT 2 and SLOT 3 in both cabinet 1 (KSU1-
408M) and cabinet 2 (KSU2-408E).
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APM4’s are installed using four 2.5 cm (nickel) standoffs.
•
When adding APM4 modules to KSU2, you can install one on either of the Extension Expansion module
connectors, and one on the dedicated APM4 module connector.
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This connector has the logical system address of SLOT 4 in both cabinet 1 (KSU1-408M) and cabinet 2
(KSU2-408E).
Adding an APM4 (continued on next page)
APM4
APM4
408M
Summary of Contents for comdial DX-120
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