Adding An Apm4 (Analog Port Module - 4 Port) - Comdial DX-80 Installation & Maintenance Manual

an APM4 module is installed move it outward (toward cabinet cover) and install the add-on DPM8 first then
reinstall the APM4.)(Extension modules are always installed on the left-hand side, in the KSU.)
6. Use the four brass-color standoffs supplied with the DPM8 to secure the DPM8 in position.
7. Connect the DPM8 ribbon cable to the 408M Extension Expansion Module Connector closest to the DPM8.
Press firmly (but not forcefully) on the connector to secure a good connection.
8. Make connections to the 8 digital ports as required.
NOTE:
9. Replace the KSU cover and secure with cover screws.
10.
Restore KSU power.
Adding an APM4 (Analog Port Module – 4 port)
One APM4 (Analog Port Module, 4-port) can be added to KSU1 and two APM4's can be added to KSU2. These
modules expand the DX-80 system extension capacity to a maximum of 8 analog ports in each KSU (16 total analog
ports when used in both KSU 1 & 2).
When adding an APM4 to KSU1, it is installed by connection to the 408M via an available Extension Expansion
module connector (either "J2" or "J3" but not both). These connectors have the logical system address of SLOT 2 and
SLOT 3 in both Cabinet 1 (KSU1-408M) and Cabinet 2 (KSU2-408E). APM4's are installed using four (4), 2.5 cm
nickel-color standoffs.
When adding APM4 modules to KSU2, one may be installed on either of the Extension Expansion module connectors
and one may be installed on the dedicated APM4 Module Connector. This connector has the logical system address
of SLOT 4 in both Cabinet 1 (KSU1-408M) and Cabinet 2 (KSU2-408E).
APM4
P7290 IMM
DX-80 I
NSTALLATION AND
The FCC requires that wiring of CO Lines into a Key Service Unit be separated from
the wiring of station apparatus into a Key Service Unit. Therefore the installer must
use a separate cable for wiring of stations and CO Lines.
APM4
2-10
M M 03/01
AINTENANCE ANUAL
408M
J2