System Planning
Determine Hardware Requirements
Summary: The final step in system planning is dete rmining what hardware is required to install and
operate the system as designed. The TCIV System Ordering Guide should be completed in
accordance with the following steps.
Step 1.
Step 2.
Step 3.
Step 4.
step 5.
If speakers are to be used by a paging or audio progra mming source (e.g., Director Series)
other than the Telecenter IV, determine the number and type of switch panels required
(SW25 or SWT425) and order one TC4110 (SC25) for each.
Determine the total number of SCC25 Speaker Control boards required by subtracting the
number of SC25s determined in Step 1 from the total number of Speaker Control boards
required to meet the established physical number layout plan.
Determine the number of TC4140 LLM
expansion chassis required
by subtracting one (1)
from the total number of LLM’s required and dividing the remainder by Eve (5). Increase the
quotient to the next whole number if a fraction is obtained.
Determine the number of TC4165
VCM
expansion chassis required by subtracting one (1)
from the total number of VCMs required and dividing the remainder by four (4). Increase the
quotient to the next whole number if a fraction is obtained.
Determine Power Amplifier requirements for All Page by summing the output power re-
quirements of all speakers in the system. Order a Power Amplifier which will meet current
and anticipated needs.
Step 6. Determine Power Amplifier requirements for Zone Page by summing the output power re-
quirements of all speakers in each zone. Order a Power Amplifier which will meet current and
anticipated needs of the zone with the highest power requirement.
step 7. If more than one TC4160 VCM is required, determine power supply requirements using the
following formula and the steps on the next page.
Step 8. Provide lightning protectors for any lines which go outside the building (Drawing KM0714).
D.C. Power Requirement Formula
MI0 + CPU + MTGlOO
=
1.80
LLM
Off-Hook Phones
Number X .08 =
Number X
.04 =
VCM2s:
Idle
2w
12w
Number
Number
Number
X
.30 =
X .66 =
X 2.40 =
Total Amps
=
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