The material contained in this document is the property of Electronics & Innovation Ltd., it is subject
to change without notice.
February 2007 Page 5 of 17 Revision C
2.8 Front Panel Display
The 325LA front panel has a passive LCD display designed for simplicity and ease of use. During
initialization, the LCD shows the software revision.
Pf:___W Pr:___W
Status:________
Figure 2.1 : Front Panel Display
After the amplifier is initialized, the LCD indicates Forward Power, Reflected Power, and amplifier
status (see figure 2.1). 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)
In the event of a fault, the unit may be reset by either cycling the power or via the RS 232
interface. In the case over an over temp fault, ensure that the air inlet and out let are
unclogged and unrestricted. If the fault persists, please contact E&I or your local
representative.
2.9 RS 232 Interface
The 325LA features a standard RS-232 serial interface suitable for connection to a PC or
host system. The communication protocol is extremely simple to facilitate readback and
control with readily available terminal programs such as Hyperterm. The RS-232 link has
the following parameters:
Baud rate:
19200
Data bits:
8
Parity:
none
Stop bits:
1
