RS-232↔IEEE 488 INTERFACE CONVERTER
Vtest | Test Voltage—Output—Pin 6 |
This pin is connected to +5 volts through a 1K resistor. It is also common to Vtest on Pin 9.
This pin sets the ground reference point for the other RS-232 inputs and outputs.
Vtest | Test Voltage—Output—Pin 9 |
This pin is connected to +5 volts through a 1K resistor. It is also common to Vtest on Pin 6.
+RxD | Receive Data Plus—Input—Pin 14 |
This pin accepts serial data sent by the RS-422 host. The serial data is expected with the word length, baud rate, stop bits, and parity selected by the internal switches. The signal level is high true and only connected to this pin when RS-422 operation is selected. It is 180 degrees out of phase with -RxD.
+TxD | Transmit Data Plus—Output—Pin 16 |
This pin transmits serial data to the RS-422 host. The serial data is sent with the word length, baud rate, stop bits, and parity selected by the internal switches. The signal level is high true and only connected to this pin when RS-422 operation is selected. It is 180 degrees out of phase with -TxD.
