
CDM-840 Remote Router Revision 2
Rear Panel Connections MN-CDM840
3–13
3.3.3 48V Direct Current (DC) Power Interface (Optional)
Figure 3-8. CDM-840 DC Power Interface
3.3.3.1 DC Operation – Applying Power
Figure 3-9. Applying DC Power to the CDM-840
To apply DC power to the CDM-840:
• First, connect the user-supplied (+) and (–) DC power leads to their respective terminals.
Number 18 AWG minimum wires are recommended.
• Then, connect the user-supplied DC power leads to the power source.
• Finally, switch the unit ON.
2 Screw-in Fuse Holders / Receptacles
Power Terminal Block
DC Power Specifications
Input Power
25W (typical)
245W (maximum with BUC)
Input Voltage
48V DC, nominal
(36V to 60V)
Connector Type Terminal Block
Fuse Protection
(2X) 5mm x 20mm Slow-blow type fuses:
T3A (3.0A) Main
T5A (5.0A) (BUC)
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