Tuning Of The Power Amplifier - OM POWER OM2000+ User Manual

5.4.

Tuning of the Power Amplifier

The OM2000+ power amplifier is operated in class AB. Thus it's possible to obtain a maximum output
power at 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 and problems
with TVI/BCI.
If the input power is higher than 10W and the power amplifier is NOT correctly tuned, the safety
devices will switch it to STBY. After switching the amplifier to STBY, you need to switch it back to
the OPER mode by pressing RESET button shortly.
Using foot switch in „KEY IN" we
Type of supported TCVR and working
activated transmitting mode of the PA
first.
frequency are visible on the display.
"ON AIR" LED is ON.
EBS is active (Ip = 20mA)
In the transmitting mode all 4 buttons
(S1, S2, S3, and S4) are blocked!
Type of supported TCVR and working
frequency are visible on the display.
An example of standard tuning procedure
using Analog wattmeter.
CAUTION
CAUTION
AUTO LED is ON.
AUTO LED is ON.
.
23