Chroma 19572 - Remote Interface and Communication; RS232 Interface Details

Remote Interface Description
5-1
5. Remote Interface Description
5.1 RS232 Interface Specification
5.1.1 Data Format
Baud Rate: 300 / 600 / 1200 / 2400 / 4800 / 9600 / 19200
Parity: NONE / ODD / EVEN
Flow Control: NONE / SOFTWARE
Transmit bit: 1 initial bit
8 data bit or 7 data bit add 1 parity bit
1 end bit
5.1.2 Command Format
The RS232 interface function of the instrument is inputted by ASCII code to compose
command string to remote control and setting function. The length limit of command string is
within 1024 characters (include end code) [command + parameter] to compose a command.
Two commands can connect by semicolon “;” and add end code finally. End code can be any
type of the below. The instrument can distinguish by itself.
End code
LF
CR + LF
5.1.3 Connector
RS232 connector of this tester is a 9-pin female connector.
12
3
45
67
8
9
Pin No.
Description
1
*
Not used
2
TxD
Deliver data
3
RxD
Receive data
4
*
Not used
5
GND
Grounding
6
*
Not used
7
*
Not used
8
*
Not used
9
*
Not used