
Model 8210A-2-5
IM-377
Aeroflex / Weinschel
11
Figure 4. Model 8210A-2-5 Internal Switch Locations
6-2. Serial Operation. The serial interface (RS232/RS422) provides a means of remotely programming the 8210A-
2-5 via external computer. The 8210A-2-5 provides for user-selectable communications parameters via a DIP switch
(SW1), including baud rate, data format, and handshaking method. LED indicators are provided for transmit (TX) and
receive (RX) activity. Selection between RS232/RS422 mode is controlled via an internal 4 position DIP switch SW2,
which also provides for user-selectable 120 ohm terminations for the RS422 receiver lines. The RS422 mode
transceivers are electrically compatible with RS-422 or RS485.
SW2 RS232
RS422
RS485
Description
1 OFF
User
Select
CTS Termination
On = Termination
Off = No Termination
2 OFF
User
Select
RXD Termination
On = Termination
Off = No Termination
3 OFF
ON
RI/RTS
Select
4 ON
OFF
Serial
Mode
On = RS232
Off = RS422
The data format includes a start bit, eight data bits, and one stop bit (N81). The Baud Rate may be set to
2400, 9600, 19200, or 34800. Parity selections include settings for None, Even, or Odd parity. Handshaking may be
enabled, if desired, and the method may be set to either hardware (RTS/CTS) or software (XON/XOFF). For
interactive terminal use, echoing may be enabled, in which the 8210A-2-5 will echo all characters received back to the
terminal.
All data and commands are encoded using the ASCII character set. The syntax for commands is the same as
for GPIB operation, and uses the syntax structure defined by IEEE 488.2, with the exception of the command
termination rules. Commands sent to the 8210A-2-5 may be terminated with either an ASCII CR (0x0D) or ASCII LF
(0x0A) character. By default, all responses from the 8210A-2-5 are terminated in an ASCII CR/LF sequence (0x0D
followed by 0x0A).
Содержание 8210A-2-5
Страница 52: ......