MAN-70009, REV A
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22
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SECTION 6.0
REMOTE INTERFACE FOR MEDIUM POWER AMPLIFIERS
6.1 INTRODUCTION
PowerMax Amplifiers can be operated remotely from a computer having RS-232 or ETHERNET
interfaces. These interfaces will allow the amplifier to be remotely controlled by sending
commands to the amplifier. Additionally, the amplifier status and forward and reverse power
readings may be read over the remote.
6.2 RS-232 INTERFACE
RS-232, a standard which defines the communication between DTE, data terminal equipment to
DCE, data communication equipment. The PMI Amplifiers have a RS-232, serial interface. All
amplifier functions can be controlled by coded messages sent over the interface bus via the 9-pin
D-type socket connector on the rear panel of the unit.
6.2.1 RS-232
Wiring
Connect the serial port of the amplifier to a computer using a null modem cable or a standard
serial cable with a null modem adapter.
Pin #s Signal Name
Remote Terminal I/O
2
TXD
Output to remote terminal
3
RXD
Input from remote terminal
5
Signal GND
Signal reference
Note: Use the NULL Modem between Computer and Amplifier for RS-232 Interface.
The RS-232 Serial Communication Settings:
Baud Rate:
9600 Baud.
Data Bits:
8
Parity:
None
Stop bits:
1
Flow control:
None
