User's Manual Part 2

116
Table 4: Description of the AGC connector
RS232
The DB9 female connector on the front panel is an external communication RS232 serial port, through which
a PC can be connected directly to the amplifier in order to perform operations such as the remote control (by
means of an adequate software
2
) and the update of the microcontroller firmware.
The used communication protocol is asynchronous, at a 19200bps speed, 1 start bit, 8 data bits, 1 stop bit,
no parity. No hardware flow control is used. The connector is DCE type and the pin used are shown in Table 5.
PIN N° ON DB9
123456789
DESCRIPTION
-TxDRxD-GND- - - -
MISCELLANEOUS
The J2 (called AUX), J4, J5 and J17 connectors are not used and are there only for future updates. The SW1
dip-switches are partially used for the configuration of the correct mode for the micro-controller. The other
switches are not used. It is important that the position of the dip-switches is left unchanged, because changing
it may set a wrong mode for the micro-controller, affecting the work of the whole amplifier.
2
For more information about this application contact the distributor of the manufacturer.
PIN N°
ON DB9
PIN N°
ON J10
TYPE DIRECTION DESCRIPTION
1 1 - - Ground
23DigitalOutput
AGC Alarm
0V = Alarm
5V = Normal
35DigitalOutput
AGC Alarm
0V = Alarm
5V = Normal
47- -Not used
59 - -Not used
62 - -Not used
7 4 - - Nout used
8 6 Analog Output Forward power
9 8 Analog Output Forward power
Table 5: Description of the RS232 connector