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Appendix B — Humilab chilled mirror hygrometer
In order to resume normal data output, press
ESC
twice to return to
the main menu, return to Set RS-232 Units and Disable User
Prompt For Data.
From the Set RS-232 Units sub-menu, press
2
to change the hand-
shake protocol. The default is no handshake. You will be asked for
a password:
ENTER ACCESS CODE:
Type “
ACCESS
” and press
RETURN
. The new status will be echoed.
Press
E
to return to the main menu.
Display option
From the main menu press
4
to change the behavior of the front
panel
DISPLAY
switch. The default behavior is that all units are
available, the output(s) are viewable but not changeable.
One of the following sub-menus will appear:
1)DISPLAY UNITS 2)OUTPUTS 3)ALARM E)EXIT
Press
1
to determine the behavior of the
DISPLAY
switch with
regard to parameters. The following sub-menu will appear:
SELECTED UNITS =
1) SELECT 2) FIX/ALTERNATE DISPLAY E) EXIT
Press
1
to select the parameters shown by the
DISPLAY
switch. One
of the following sub-menus will appear:
1)DPC 2)DPF 3)RH 4)TMPC
5)TMPF 6)NONE E)EXIT
Press numbers individually to add the associated parameter to the
DISPLAY
switch sequence. Press
6
to clear before adding parame-
ters. Press
E
twice when you are done.
This feature is not recom-
mended for closed-loop operation.
Press
2
to choose fix/alternate display. The following sub-menu will
appear:
1) FIX 2) ALTERNATE
In the fix display mode, the display will show only the selected unit
during normal operation. In the alternate display mode, the display
will alternate between available units at a 2-second interval.
This
setting is not recommended for closed-loop operation.