Crown FM250 Bedienungsanleitung PDF herunterladen (Seite 18)

3–3Operation

Note : If no RF power is achieved, check the DPM display for a flashing dot in the 

lower right corner of the display. If this is present, the system needs to be reset 

before power can be restored. Refer to illustration 2-15, section 2.5, Remote I/O 

connections pin 3 of Port A for further information.



9. Using the 'raise/lower RF power' buttons, raise or lower the RF power to the 

desired setting (unless the power was specified at time of order).



10. Use the 'Fwd/Rev' selector switch to check for reflected power on antenna 

feed-line if desired.



11. Use the PA1 through PA5 power controls to limit the amount of power output 

the transmitter can achieve. The FM10000 is set to limit at 11000 watts in the 

preset condition. For settings lower than this, adjust each PA control counter- 

clockwise in small equal increments to the desired level. For a more secure 

method, use the power set control located behind each front panel of each PA. The 

settings on the individual PA's are unconventional in that a lowering of power is 

achieved by adjusting the control clockwise.



The remainder of this section describes the controller and its functions.



3.2 AC Power Switch

The Transmitter Controller's AC power is controlled by a switch located on 

the AC input filter. The AC input range is 100-250 VAC. The fuse type and 

size are 3AGC at 1/2 amp slo-blo and there are 2 fuses. See illustration 3-2 

for switch location.

Illustration 3–2 AC Input Power 

Switch

1 2 ... 13 14 15 16 17 18 19 20 21 22 23 ... 37 38

Keine Kommentare

Crown FM250 Bedienungsanleitung Seite 18