Installation Manual

Installing the BSR Hardware Installation Guide
6.6. Connecting DC Power
The BSR is powered by the SDA or BSDU, depending to which unit the BSR is
connected. The power is supplied through the BSR’s 15-pin D-type port, which is
connected to the SDA or BSDU.
The BSR’s power requirements are described in Table 6-5.
Table 6-5: BSR Power Requirements
Parameter Value Comment
Voltage:
• Minimum
• Maximum
48 VDC nominal
• 30 VDC
• 55 VDC
Voltage is received from the BSDU or
SDA
Maximum Amperes: 500 mA --
Warning: If you are using an external antenna, ensure that you connect the
antenna before connecting the BSR to the power source.
Note: For details on connecting the SDA or BSDU to the mains power supply,
see Chapter 7, “Installing the BSDU” and Chapter 9, “Installing the SDA”.
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