Chapter
series with a regular “straight through” cable. The net result of a null modem connec- tion is:
11
22
33
44
55
66
77
88
Figure 3: Null Modem Wiring Diagram
Serial Command Set
The HDR 203HD has a limited command set. The commands are simple, 4 character “words”. There are no arguments.
Setting Up the Serial Port
The serial port on the HDR 203HD can be set up to echo the characters as they are entered and provide limited feedback. Alternatively, it can be set up for no echo and no response. These two settings are as follows:
V1 Echoes commands and provides feedback
V0 No echo and no feedback
Simply type the desired set up command and execute with a carriage return <CR>. With the “V1” setting, commands beginning with a “W” followed by any other characters will generate a “Ready” response. Commands entered starting with any other character will generate an “Error!” response.
Page 8 | October 26, 1998 |
