The material contained in this document is the property of Electronics & Innovation Ltd., it is
subject to change without notice.
Ocotber 2008
5
Revision D
This unit is 7.4U high, 16.75” width. With the handles removed it will fit into a
standard rack.
2.2.1 Mains Voltage
The unit accommodates AC line voltages from 100 TO 240 VAC 47 – 63 Hz.
2.3 OPERATION
A fixed line cord is supplied to form a connection between the mains supply and
the rear of the unit. This is configured from the factory with a 20 A / 250 Volt
plug.
2.3.1 Proceed as follows:
(i)
Ensure that there is at least 3” or 7.5 cm clearance at the rear of the
unit for air flow.
(ii)
Ensure RF input voltage is not excessive
a. The 1 V rms indicated maximum input voltage is 5 times the level of
the input signal required to achieve maximum output. Input voltages
in excess of 2 volts peak may permanently damage the instrument.
(iii)
Connect the output via a 50 ohm coaxial lead and N plug to the load.
(iv)
Connect the input signal via a 50 ohm coaxial lead and N plug to the
input connector.
2.3.2 Front Panel Display
The A300 front panel has a passive LCD display designed for simplicity and ease
of use. During initialization, the LCD shows the software revision. After the
amplifier is initialized, the LCD indicates Forward Power, Reflected Power, and
amplifier status (see figure 2.1).
Pf:___W Pr:___W
Status:________
Figure 2.1 : Front Panel Display
Where Pf refers to forward power, Pr refers to reverse power, and Status
indicates “OK” unless there is a fault condition, such as:
•
Overheat (heat-sink temperature is too high for reliable operation)
•
PSU fault (internal fault in the main switching power supply)