Instruction manual

Unit Loads
2-19
Installing the Control Unit
Unit Loads 2
A unit load is a measure of power (1.9 watts) that you use to determine the
electrical load that the components listed below place on the control unit’s
power supply.
■ Telephones and adjuncts
■ 800 DID modules
Only the telephones and adjuncts that connect to the digital extension jacks
(ports) on the control unit require unit load calculation. When calculating unit
load, do not include any equipment with its own power supply (for example
DSS).
WARNING:
Never have more than a combined total of two 100 DS1, 100 DCD, and
100R INA modules in one carrier. Also, you can have any combination of
the following three –5 V DC modules per carrier, but do not exceed three:
Processor, DS1 module, DS1 with CSU/DSU module, INA module, and
the MERLIN Messaging module. If you exceed three –5 V DC modules in
a single carrier, the system may come on-line but may fail to function
correctly.