Black Box IC026A-R2 Manual De Usuario
28
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.
to Vtest on Pin 9.
Gnd
Ground—Pin 7
This pin sets the ground reference point for the other RS-232 inputs and
outputs.
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.
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.
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.
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.