Specifications

Guide to Operation - Menus
32
RS-232 PARITY= NONE
EVEN
ODD
The RS-232 parity can be even, odd, or none.
RS-232 WAIT=6
The SR400 can be programmed to wait between
each character it sends over the RS-232 interface.
This is to accommodate computers with slow
computer interfaces. The wait interval is
programmed in units of 3.3 ms and can be set from
0 to 25. The default value is 6 and should be set to
a smaller value whenever possible.
RS-232 ECHO= OFF
ON
To control the SR400 from a terminal, the ECHO
feature is turned ON. This causes the unit to echo
back commands received over the RS-232 port. In
this mode, the SR400 will send line-feeds in
addition to carriage returns with each value
returned and will also send the prompts 'OK>' and
'??>' to indicate that the previous command was
either processed correctly or contained an error.
When controlling the SR400 from a computer, the
ECHO feature should be turned OFF.
DATA=
This line is the data window. The last 254
characters received over the computer interface
can be played back to help find errors. The spin
knob scrolls forward and backward through the
window. Unrecognized control characters are
displayed as 'cc'. Carriage return and line-feed are
shown as 'cr' and 'lf'.
The window always returns to the most recent data
whenever this line is first displayed or a new
character is received. Changing any COM
parameters clears the communication buffers and
clears this window.