What frequency can be used with the Common Exciter Input ?
The typical frequency is 13.56 MHz. In some applications it may be desirable to operate the PB3 at a center frequency other than the rated 13.56 MHz. This can be accomplished by ordering the unit with a special output frequency or using an external RF signal generator to drive the Common Exciter input at the desired frequency. For safe operation, please use a 10dB 50 ohm pad (attenuator) between the external signal generator and the CEX input.We have tested the PB3 models below for wide band operation. The test is to operate the unit at full power into a 50 ohm load while adjusting the frequency of the signal generator above and below the 13.56 MHz center frequency. The usable band edge is defined as the point where the output power starts to drop. Please note that reduced output power operation (outside the typical frequency window) is possible without harm to the PB3. The output control set-point will need to be set lower than full power to maintain a constant level.
