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1 dc operation – apply power – Comtech EF Data CDM-760 User Manual

Page 64

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Rear Panel Connections

Revision 2

CDM-760 Advanced High-Speed Trunking Modem

MN-CDM760

3–16

3.3.3 48V Direct Current (DC) Power Interface (Optional)

Figure 3-12. DC Power Interface

3.3.3.1 DC Operation – Apply Power

Figure 3-13. Apply DC Power to the unit

To apply DC power to the unit (Figure 3-13), do these steps:

Step

Task

1

Connect the user-supplied (+) and (–) DC power leads to their respective terminals.

Number 18 AWG minimum wires are recommended.

2

Connect the user-supplied DC power leads to the user power source.

3

Switch the unit ON.

Feature

Description

1

On / Off Switch

2

Power Terminal Block

3

Screw-in Fuse Holders / Receptacles

DC Power Specifications

Input Power

48 watts (typical with TPC/LDPC Codec and CnC

module installed), 68 watts (max)
280 watts (typical TPC/LDPC Codec, CnC

module and 48 volt BUC supply installed), 300

watts (max)

Input Voltage

43-60 VDC Nominal

36-60 VDC Maximum

Connector Type Terminal Block

Fuse Protection

(2X) 5mm x 20mm Slow-blow type fuses:

Modem Fuse: 3Amp/250Volts

BUC Fuse: 6.3 Amp/250 Volts