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TABLE 2-9 Unit Load Calculation Example
VOICE TERMINALS Qty Unit Load
Unit Load x Qty
Total
5-Button
8
1
1x8
8
10-Button HFAI
5
1
1X5
5
7406 Digital
4
1
1X4
4
BIS-34D
9
2
2x9
18
BIS-22D
5
1
1x5
5
Voice terminal total 40
ACCESSORIES
Qty Unit Load
Unit Load x Qty
Total
Basic Telephone &
Modem Interface
5
2
2x5
10
General Purpose
Adapter
2
1
1X2
2
Hands Free Unit
5
1
1X5
5
Accessories total 17
3 Compute the unit load for all the voice terminals and
accessories listed in step 1 by multiplying the quantity
of each type by its unit load. See Table 2-9 for an
example.
4 Add the total unit load computations for voice
terminals and accessories.
Example:
Voice terminal unit load total 40
Accessory unit load total
17
Unit load grand total
57
5 Review the unit load grand total. Because the total
number of unit loads in this sample configuration
exceeds 45, this system requires an Auxiliary Power
unit.
2-60 Installing the Control Unit