Crown FMX250 Instrukcja Użytkownika Pobierz pdf (Strona 21)

3–2

FM4000 User’s Manual

These steps summarize the operating procedures you should use for the initial

operation of the power amplifier and power supply. More detailed information

follows.

1.Ensure that the external remote control unit is properly connected to the

transmitter controller port A (see illustration 2-

15, Section 2.6, page 2–10

for proper pin configuration).

2.Connect Antenna

feed-line to the output of the directional coupler.

3.On the Transmitter Controller, locate the Power Control for PA1 and PA2 and

adjust these controls fully Counter-Clockwise. (See illustration 3-1).

3.1 Initial Power-up Procedures

240 VAC IN

AC Input

Circuit Breaker

Outputs to

PA2000

Air Exhaust Vents

+ DC Output

DC Output

PS2000

Fans

Power

Control

OFF

Fan

Circuit Breaker

5. Turn on the exciter (FM250) and adjust the RF output power for 140 watts. 

This system is not a drive dependent amplifier design; therefore drive level 

must remain constant regardless of main output level. Use remote control to 

raise and lower RF output power, not the RF output level of the driver.

4. Turn on (flip up) both of the AC input circuit breakers located on the rear panels

of each power supply (do not turn on the front panel switches yet).

Illustration 3-1 Transmitter Controller Front Panel Controls

Illustration 3-2 PS2000 Back Panel Functions

Power control

Local Enable switch

Remote/Local switch

Raise/Lower RF

Power control

RF Power (KW)

Fwd/Refl power

select switch

1 2 ... 16 17 18 19 20 21 22 23 24 25 26 ... 43 44

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