Computer Control Information - AOR SDU5500 Manual

Section 7

(7) Computer control information

The SDU5500 is fully controllable by PC via the RS232 socket, no specific hardware interface is
required, just a straight RS232 cable. All keyboard operations may be mimicked via a PC and display
data may be downloaded for reconstruction in the PC enabling recording of activity and historic analysis.
The SDU5500 is equipped with an RS232 port in addition to the connection port for a companion radio.
The two connectors are the same, please refer to section 2-2 of this manual to assist with identification.
DO NOT CONNECT TO THE WRONG PORT. The RS232 port uses a 9-pin D-type female socket, this
requires an RS232 lead terminated in a 9-pin D-type male plug. The wiring of the cable is straight
through:
SDU5500
2
3
7
8
5
The SDU5500 RS232 specification is as follows:
Data bits:
Stop bits:
Parity:
Baud rate:
Flow control:
Command list
Commands are divided into four categories:
S = Spectrum analysis
V = Visual command
U = User interface
I = Information
The following format is used for tabular presentation, Windows terminal / HyperTerminal may be used to
enable experimentation (+ indicates that a carriage return is sent by the SDU5500):
Function Read/Write Command category
CENT FREQ. R
In this example, the centre frequency is read
Command = read (not write)
Category = Spectrum
Type of command (abbreviation) = CF
Parameter (variable), in this example none used
Example of input = RSCF [CR]
Response from SDU5500 = SCF84.3 + (Centre frequency is 84.3 MHz carriage return)
A correct WRITE command results in the action being carried out and a (CR) being returned. An
incorrect command results in a question make "?" being returned.
38
PC 9 pin
2
3
7
8
5
8
2
None
9600bps
X flow
Type of command
S CF
PC 25 pin
3
2
4
5
7 GND
Parameter Example Response
RSCF [CR] SCF84.3 +