
Technical Section
9
Keystroke Procedure
The keystroke operation is consistent for all menus. The sequence of keystrokes is the same regardless of the menu
item being changed.
1.
Press the
MENU
key to access the main menu.
2.
Use the
S
/
T
keys to scroll through the menu choices. The blinking cursor needs to be on the first letter of
the menu you want to access.
3.
Press the
SELECT
key to access chosen menu.
4.
The menu selected is now displayed on line one and the first menu item is displayed on line 2. Use the
S
/
T
keys to scroll through the menu items. Scroll through the menu items until desired item is displayed.
NOTE
: If “Enter Code” is flashing, the access code must be entered before you can enter the menu.
Access code is found in
. Appendix D may have been removed from the manual for
security reasons.
5.
Press the
SELECT
key to access chosen item. The top line of display shows menu item selected, while the
second line shows current item value.
6.
Use the
S
/
T
keys to change item value.
7.
Save the new value by pressing the
SELECT
key (pressing the
MENU
key will exit out of menu function
without saving data).
8.
Press the
MENU
key to exit current menu and return to main menu.
9. Press
the
MENU
key again to return to normal instrument operation.
If more than one item is to be changed, skip steps 8 and 9 until all changes are complete. If more items in the same
menu are to be changed, scroll to them after saving the data (step 7). If other menus need to be accessed, press the
MENU
key once to access list of menus. The instrument is now at step 2 of the keystroke sequence.
Programming Example
The following example demonstrates the keystroke sequence explained above. In this example the high alarm set
point will be changed from -0.002 inches H
2
O to -0.003 inches H
2
O.
n
Unit is in normal operation scrolling room pressure, flows, etc. Pressure is shown
in this case.
PRESSURE
-.00100 “H
2
O
o
Press the
MENU
key to gain access to the menus.
The first two menu choices are displayed.
SET POINTS
ALARM
p
Press the
T
key once. Blinking cursor should be on A in Alarm. Press the
SELECT
key to access the
ALARM
menu.
NOTE
: Blinking cursor must be on A in Alarm.
Line 1 shows menu selected.
Line 2 shows first menu item.
ALARM
LOW ALARM