Model 2651A High Power System SourceMeter® Instrument Reference Manual Section 2: General operation
2651A-901-01 Rev. A / March 2011 2-83
The factory-selected baud rate is 9600.
Both the Model 2651A and the other device must be configured for the same baud rate. Make sure
the device connected to the Model 2651A RS-232 port can support the selected baud rate.
Data bits and parity
The RS-232 interface can be configured to send/receive data that is 7 or 8 bits long using even, odd,
or no parity.
Flow control and signal handshaking
Signal handshaking between the controller and the instrument allows the two devices to communicate
to each other regarding being ready or not ready to receive data.
The RS-232 interface provides two control lines (RTS and CTS) for this purpose (see the following
figure and table). When the Model 2651A is ready to send (RTS) data, it will transmit when it receives
the clear to send (CTS) signal from the computer.
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