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Model 100A250A
2.2.2
2.2.2.7
RS-232 Communications (continued)
Special Note: A null modem cable or adapter is required in order to properly interface the
Model 100A250A to a standard serial port on a computer.
Once the RS-232 interface is established, commands are processed in the same manner as that of
the IEEE-488 interface. The command structure is identical, except that there is no EOI line.
Therefore, all commands are terminated with a line feed (<LF>).
asynchronous interface, if the Model 100A250A detects an error, the error message is immediately
transmitted to the host controller. These error messages are defined in Table 2-2.
2.2.2.7.1 RS-232 port settings
The RS-232 port settings used for communication with the Model 100A250A are as follows.
Word Length:
Stop Bits:
Baud Rate:
Parity: None
2.2.2.8
Remote Commands
The following commands are available to the user for remote communication and operation of the
Model 100A250A. In the descriptions of these commands, a lower-case "x" is used to signify a
numeric value or parameter.
Remote Operation (continued)
Pin No.
1
DCD
2
RD
3
TD
4
DTR
5
GND
6
NC
7
RTS
8
CTS
9
NC
*Note:
> = Output from Model 100A250A
< = Input to Model 100A250A
8 bits
1
1200–76,800 (switch-selectable)
Table 2-3
RS-232 Connector Pin-Outs
Signal
Data Direction*
<
<
>
>
N/A
N/A
>
<
N/A
Manual Text
Description
Device Carrier Detect
Receive Data
Transmit Data
Data Terminal Ready
Ground
No Connection
Ready To Send
Clear To Send
No Connection
Since this is a full-duplex
2-6
REV -