Keypad Descriptions - Extech Instruments 48VTR User Manual

Keypad Descriptions

SCROLL Key
•
Press SCROLL once to access the 1
again to move from one parameter to the next.
•
The SCROLL key is also used in combination with the RETURN key to move
between menu levels (press both keys simultaneously for 5 seconds to move from
one menu level to the next). As the user scrolls through the menu items, the red
LED display shows the current parameter.
•
Also, the SCROLL key is used to activate an Auto Tuning session (press and hold
the SCROLL key for 5 seconds to start an Auto Tuning session – Refer to the Auto
Tune Section for more information).
UP Arrow Key
The UP key increases the Setpoint (SV). Also, the UP arrow key is used to select items
from the lists in the programming menus.
DOWN Arrow Key
The DOWN key decreases the Setpoint (SV). Also, the DOWN arrow key is used to
select items from the lists in the programming menus.
RETURN KEY
•
During normal operation, pressing the RETURN key permits the user to view the
controller output action as a percentage (0.0-100.0%). Press and hold the RETURN
key for 5 seconds to enter "manual mode" (refer to the Auto / Manual Control
section).
•
Press this key from any other mode to return to the normal SV display.
•
The RETURN key is also used with the SCROLL key (pressed simultaneously) to
move from one programming menu to another.
st
Menu Level, and then use the SCROLL key
14 Model 48VTR - Version 5.0 – January 2006