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IMI 66-047
SYSTEM CHECKOUT
Initial
Condition_
The system operating features are set to a set of default conditions
at initial power up.
system with a known set of parameters, and the system should be
initially checked out with the default conditions in place. At
anytime while the system is operating, default conditions can be reset
from station port 10 or 11 per the instructions provided in Chapter 3.
Check Out
Check the KSU and telephone installation for proper operation by
performing the following resistance and voltage measurements.
Resistance Check
Make the following resistance measurements at the station connector
blocks under the following conditions.
l
KSU AC power cord disconnected from electrical outlet.
l
Power interconnection cable connected between KSU and power
l
KSU connected to station connector blocks.
l
Stations wired, and wiring punched down on blocks.
l
Bridging clips removed from blocks to isolate stations from KSU.
1 .
Measure the resistance of each installed station and wiring from
the station side of the connector blocks.
vary with cable length and station type but should be within the
following limits.
MEASURED PAIR
VOICE PAIR
DATA PAIR
2 .
Measure the resistance of the KSU and cables from the KSU side of
the station connector blocks.
the following limits.
MEASURED PAIR
VOICE PAIR
DATA PAIR
These conditions provide a basic operating
MEASURED STATION RESISTANCE IN OHMS
22 LINE/
3 AND 8
FEATURE
LINE
40 - 150 40 - 150 40 - 150 0.3 - 100
0.3 - 100 40 - 150
OPEN
OPEN
Resistance values should be within
MEASURED KSU RESISTANCE IN OHMS
40 - 50
0.3 - 0.5
2-17
Resistance values will
SINGLE
LINE
CONSOLE
0.3 - 100 0.3 - 100 .
Installation
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