Model 3030 & 3030E Series Technical Manual Section 7
Ludlum Measurements, Inc. Page 34 November 2017
Print Samples: Selecting this option prints the sample data to a printer.
RS-232 Communication
The Model 3030 communicates by way of an RS-232 interface. The RS-232
port operates at 9600 baud, 8 data bits, 1 stop bit, no parity, and hardware
(RTS/CTS) flow control.
A standard RS-232 cable with straight-through connections is required.
Following is information for pin-outs of the RS-232 Connector/Cable:
M3030 PC (9-Pin)
2 TXD RXD 2
3 RXD TXD 3
5 GND GND 5
7 CTS RTS 7
8 RTS CTS 8
The Model 3030 uses the line-feed character [LF] to terminate commands.
It is acceptable to terminate commands with a carriage return and a line feed
character. All messages received from the Model 3030 are terminated with a
carriage return and line feed character.
The commands are not case sensitive. Any command not recognized will
return "ERROR-xx" where xx is the first two characters of the unknown
command.
[LF] = line feed character (ASCII value 10)
[CR] = carriage return character (ASCII value 13)
COMMANDS
Bn – Background Subtract Status
Sets background subtract ON/OFF or return background subtract status,
where “n: is a value of 0, 1, or 2.
0 = Sets background subtract OFF.
1 = Sets background subtract ON.
2 = Returns status.
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