Normally, the maximum slew rate allowed is 30V/µsec. The RS232 standard maintains a minimum slew rate with slow rise and fall time to reduce the cross-talk between neighbouring signals. The change of input voltage determines the rate at which the RS232 driver responds. The voltage from -3V to +3V is considered as an indeterminate state. Whereas the control voltage signals use negative logic, i.e., logic ‘1’ indicates -3 to -25 volts and logic ‘0’ indicates +3V to +25V. The signal voltage between +3V to +25V represents logic ‘1’ and the signal voltages between -3V to -25V represents logic ‘0’. They are categorized as signal voltage and control voltage. The line voltages of RS232 range from -25V to +25V. It specifies the electrical voltages, slew rate, line impedance, operation mode, and baud rate. The electrical specifications for RS232 are updated in the year 1969. This standard is used for transmission of information exchange over the telephone lines. RS232 describes the common voltage levels, electrical standards, operation mode and number of bits to be transferred from DTE to DCE. In this case, DTE sends binary data “11011101” to DCE and DCE sends binary data “11010101” to the DTE device. The DTE (computer) transmits the information serially to the other end equipment DCE (modem). Formally, it is specified as the interface between DTE equipment and DCE equipment using serial binary data exchange. Example of DTE device is a computer and DCE is a modem. Here, DTE refers to Data Terminal Equipment and DCE refers to the Data Communication Equipment. It defines the serial communication using DTE and DCE signals. In RS232, ‘RS’ stands for Recommended Standard.

Samsung un60h6203 rs232 commands