SerVision CVG-M Instalační příručka stáhnout pdf (Strana 13)

SerVision CVG-M Installation Guide

Installing the CVG-M System 12

Figure 7: Connecting cameras to the power supply through the Activator connector

Transforming the Supplied Voltage to 12V

When the power supply for one or more devices is routed from the vehicle battery, you must ensure that the voltage

reaching the devices is 12V. If the vehicle battery supplies power at a voltage other than 12V, you must insert a

transformer between the battery and the device, as in figure 8 below.

In order to ensure that the transformer is compatible with the vehicle battery, it is recommended that it be purchased

in the country in which it will be used. In addition, make sure the capacity of the transformer is more than sufficient

for all of the devices connected to it. You can calculate the required capacity by calculating the sum of the power

consumptions of each device drawing power from the battery through the line. For example, if two cameras and a

sensor are connected directly to the battery, and each one uses 2W, the total requirement is 6W. Allow an additional

margin of 20-30% when you select the transformer. Thus, if the devices require a total of 6W, get a transformer that

supplies at least 7.2W.

NOTE: You can convert Amps to Watts using the following formula:

Volts * Amps = Watts

For example, a 12V device that operates at 250 mA consumes 3 Watts: 12 * 0.25 = 3.

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SerVision CVG-M Instalační příručka Strana 13