Rack-mounting brackets
The Davicom is designed to be rack-mounted in one of three positions depending on the rack type you have. You will need to install the two L-shaped brackets that came with your unit into the proper side mounting holes on both sides of the Davicom. See images below. Be sure to use all 4 mounting screws in order to ensure maximum mounting strength.
Once these L brackets are properly installed, you can rack-mount your Davicom.
Power supply
In order to ensure backup operation during power failures, all Davicom units operate from a 12 Vdc supply. This allows you to use 12 Volt battery & charger combinations to run the Davicom and keep it alive during critical situations where main site power may be lost.
The Davicom’s power supply board has protection circuits for over-voltage and undervoltage conditions with hysteresis for each circuit. When the input voltage drops below approximately 9 Vdc, power is cut off and will return only when the input source goes above approximately 10.9 Vdc. When the input source goes above approximately 15.3 Vdc, power is cut off and returns only when the input drops below approximately 14.7Vdc. The image below shows the relationship between the input and output voltages.
Connecting the Power Supply Unit
The power supply for your Davicom unit must be able to provide 12 Vdc supplying up to 6A for a fully-configured, 4-unit SuperMAC (see note in section 1.1.2.4). Refer to Section 7.2 on page 188 of the Reference Manual for more details on the unit’s protection circuits.
You will need to install the supplied XLR4 connector onto the power supply’s output cable. For connection to a 12V power supply, pin 1 is for GND (0 V), pins 2 and 3 are unused, and pin 4 is for 12 V.
There is also a 48V option, and this option uses pins 2 and 3. Pin 2 is for the most-negative voltage, and pin 3 is for the most positive, as shown below.
Pin 2 Pin 3 -48V 0V or GND 0V or GND +48V
Depending on the distance between the Davicom and the power supply, ensure you use a wire gauge sufficient to carry 6A to the Davicom with minimal voltage drop.
A green LED on the Davicom front panel will indicate the presence of DC power.
If you purchased the Davicom Power Supply Model RMPS1212-BB from Davicom, follow the connection procedure shown below:
