EXPRESS DAS
Installation and Operations Manual
EXPRESS DAS Installation and Operations Manual – Version 2.2 November 2013
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9.2
Install OEU Chassis
The OEU is typically installed in an equipment closet. The unit is designed to mount in a standard 19-inch
rack and occupy 2U in height. The OEU requires a separate DC power unit, which should be mounted
below the OEU.
1- When positioning the OEU in the rack, make sure to allow for 1U of space below the unit to install the
DC power supply.
2- Position the OEU in the rack. Insert the M6 screws in the mounting holes and tighten the screws to
secure the unit.
9.3
Install DC Power Shelf and Connect to OEU
1- Install the DC Power Shelf in the 19-inch rack below the OEU leaving 1U of space.
2- Before connecting the power supply to the terminal block at the back of the OEU, check the voltage
coming from the power supply using a voltage meter. Connect the positive "+" terminal of the volt meter
with the ground “GND” terminal and then connect the negative "–" terminal of the meter with the -48V
terminal. The power source should be providing -48Vdc voltage.
3- After verifying the power source, connect the DC power cable to the OEU terminal block. Connect the
blue cable to the -48v terminal. Connect the black cable to the GND terminal as shown in the following
figure.
Figure 9.1 – OEU Terminal Block
Содержание EXPRESS Single-Carrier DAS
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