User's Manual

Installing the BSDU Hardware Installation Manual
5-2 Airspan Networks Ltd. 02030311-03
5.1. BSDU Characteristics
! Size: 19" rack mounting practice, 1-U vertical space requirement
! Weight: 3.1 Kg
! Power Rating: 200 watts (when connected to six BSRs and a GPS)
! Voltage: -48 VDC nominal (Minimum -38 VDC; Maximum -55 VDC)
! Environmental conditions:
! Operating temperature: 0ºC to +50ºC
! Humidity: 90% at 30ºC
5.2. Mounting the BSDU in the Cabinet
The BSDU is a 1U-chassis which is installed in a standard 19" (inch) cabinet, and is
provided with front-rail mounting brackets. The mounting brackets are part of the
BSDU chassis. Therefore, all that is required for mounting the BSDU is to attach the
BSDU mounting brackets to the cabinet.
The BSDU is secured to the mounting rails in the WipLL system cabinet using the
supplied four M5 mounting screws and plastic cup washers.
1. Determine which cabinet holes—left and right side--will be used for attaching
the chassis.
2. Insert four nuts into the holes you specified in Step 1.These nuts are housed in
Tinnerman clips, which allow you to fasten them into the holes. Hold the clips,
squeeze them, and insert them into the hole.
3. Carefully insert the BSDU into the cabinet, aligning the BSDU’s mounting
brackets with the holes.
4. Insert the M5-mounting screws, with plastic washers, in the BSDU mounting
bracket screw holes, on each side, as shown Figure 5-2. In this way, the chassis
is supported until you tighten the chassis screws.