OM POWER OM2000A+ Tuning Procedure And Part List page 4

Deviding of bands into segments
Band (MHz)
Width of the segments (kHz) 20
TUNING
The OM2000A+ amplifier is operated in class AB. Thus it's possible to obtain a maximum output power
at an excellent linearity. For this purpose the amplifier has to be tuned carefully.
The operation of a mistuned PA will cause malfunctions, the increase of grid current (the GRID-MAX-
LED will light up) and problems with TVI/BCI.
IM-products will be rapidly increased. If a value of + 50mA is exceeded, the safety devices will switch
the amplifier to STBY mode.
Please note:
Before starting tuning you have to check if the right antenna or a 50 Ohms
load resistance is connected at the antenna output!
Tuning the amplifier to an output of 1500 W
OM2000A will tune automatically to either TRX frequency via CAT interface or by frequency sampled
by PA.
1 . Reduce the power output of your transceiver to the 0.
2. Switch OPR/STBY to „OPR" position ( touch STBY )
Exhibit 11
1,8 3,5 7 10 14 18 21 24 28
30 30 50 30 60 60 60 70
4
After adjustment press SAVE for
writing values to the memory and
press EXIT.
Repeat adjustment process for
other segments / bands
50
250