
SYSTEM RACK
The system rack is a framework for modules that consists of up to
4.3.1 POWER CONSUMPTION
The following tables shows the average voltage, current and power for each supply voltage per card (based on loading of 72 cards).
TablePOWER
Voltage | Current | Power |
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+5V DC | 0.50A | 2.50W |
+12V DC | 0.10A | 1.20W |
0.05A | 0.60W | |
0.03A* | 1.44W | |
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| Total | 5.74W |
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* DIDs only.
Total watts including
Total Watts x No. of Modules = Terminal Power
The wattage required by the power supply is found by dividing the total wattage of the terminal by the efficiency of the power supply (0.7).
Terminal Power ⎟ 0.7 = Wattage of Power Supply
The BTUs per hour are found by multiplying a known value (3.6) by the wattage required by the power supply.
3.6x Wattage of Power Supply = Btu/Hr.
EXAMPLE:
4.3W x 72 = 310W
310W ⎟ 0.7 = 443W
3.6x 443W = 1,595 Btu/Hr
4.3.2 EQUIPMENT REQUIRED
1.Digital Multimeter, voltmeter resolution to 0.001V.
2.Transmission test set, HP 3551A.
3.IBM NT compatible computer, with Call Processor Software.
4.Two CIMs
Ohm Meter Lead Positions | Resistance in | ||
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From | To |
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Bus Bar | Chassis/Frame | Infinite | |
Bus Bar | Black | 0 | |
Bus Bar | Red | Infinite | |
Bus Bar | D1 | Blue | Infinite |
Bus Bar | E1 | White | Infinite |
Bus Bar | F1 | Green | Infinite |
D1 | Blue | Infinite | |
E1 | White | Infinite | |
F1 | Green | Infinite | |
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