Crescend C5 Series Manuale - Pagina 9

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2.4.

INSTALLATION INSTRUCTIONS

The C5 amplifier is designed for installation in a rack that permits access to the rear of the

rack for connection of DC power, RF, and monitor/control cables. The amplifier must have a

minimum of 3 inches of open space behind the rear fan to allow adequate ventilation.

To install the amplifier proceed as follows:

1. Install amplifier in equipment rack and secure in place.

2. Connect a 50 ohm antenna cable and load to the RF OUT connector on rear of

amplifier.

3. Connect the transceiver/exciter output to RF IN connector on rear of amplifier.

4. If monitoring of PA is desired, connect alarm cable to "ALARM" pin on rear of

amplifier module. See section 2.5 for more details.

5. If limited output power control of PA is desired, connect control cable or

appropriate resistor to "SH/D" pin on rear of amplifier module. See section 2.5 for

more details.

6. If remote output power cutback of PA is desired, connect control cable to "CTRL"

pin on rear of amplifier module. See section 2.5 for more details.

7. Measure primary DC input voltage. DC input voltage should be +13.8 +/- 0.1VDC.

Turn off DC voltage.

WARNING: Turn off external primary DC power before connecting DC power cables.

8. Connect positive primary power wire (+13.8VDC) to terminal marked +13.8VDC

and negative primary power wire to GND terminal on rear of amplifier.

9. Check your work before applying DC voltage to the system. Make certain all

connections are tight and the DC wires are going to the correct terminals.

10. Refer to Section 3 for initial start-up procedures.

NOTE:

1. Make sure power supply DC is well filtered and well behaved with minimal

voltage overshoot.

2. Keep DC wires as short as possible to minimize inductance induced voltage

transients.

3. Size DC Wires properly to handle the load current to minimize voltage drop.

Figure 2-1. C5 Series Amplifier, Rear View Left

040003A001 Rev C