250 SERIES
Loop Powered Display
Functions of the buttons while sub-menu and parameters choice:
Selection of sub-menu or parameter for editing. Name of selected item (submenu or
parameter) is displayed.
Operation of [ENTER] button depend on present menu position:
• if the name of some sub-menu is displayed - Press Enter; the name of the first parameter
(or next level sub-menu) is then displayed,
• if the name of some parameter is displayed - Press Enter; present value of the parameter is
displayed
[ESC/MENU] button allow user to exit present menu level and move to upper level menu
ESC
(or measurement mode).
MENU
After about 1 minute of inactivity (since last use of the button), the device exits the menu mode
and returns to the measurement mode.
7.2. PARAMETERS EDITION
To start edition of any parameter user should select name of desired one using [^] [v] buttons and
then press [ENTER].
7.2.1. Numeric parameters (Digit Change Mode)
Numerical parameters are displayed as decimal numbers. The mode of its new value entering
depends on chosen edit method ( see parameter "Edit").
In mode "by digit" ("Edit"="dig") pressing one of the keys [^] or [v] causes change of current position
(flashing digit) or the sign (+/-). Short pressing of the [ENTER] button causes change of the position
(digit).
Press [ENTER] at least 2 seconds to accept the changes, after that question "SEt?" is displayed, and
user must to confirm (or cancel) the changes. To confirm changes (EEPROM) press the [ENTER]
button shortly after "SEt?" is displayed. To cancel the changes press [ESC] button shortly after
"SEt?" is displayed. The device will then return to the main menu.
7.2.2. Switch parameters ("LIST" type)
Switch parameters can be described as a sets of values (a lists) out of which only one of the options
available on the list can be selected for the given parameter. Options of switching parameter are
selected using [^], [v] keys.
Pressing of the [ENTER] will prompt the user to acknowledge the question ("SEt?"). If key [ENTER] is
pressed once again, the changes are accepted and will be stored in EEPROM. Pressing the key [ESC]
after "SEt?" will cancel any changes and will return to the main display menu.
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