Vaisala HMP240 - Manual (Page 28)

HMP240
User's Guide
M210300en
26
5.3 Display/keypad commands
5.3.1 Display mode
In the display mode the transmitter outputs measurements on the display; dif-
ferent quantities can be scrolled with arrow keys. The first line is scrolled with
button
σ
and the second line with button
τ
; all selections are stored with
ENTER. The selected quantities appear on the display also after power failure.
After reset the transmitter is always in the display mode.
The display also shows error messages and alarms if they occur.
5.3.2 Command mode
Press the CL key to enter the command mode. The first display is the main
menu:
The commands can be scrolled with the arrow keys. The currently active
command flashes; a command is selected with the ENT key. When a menu is
displayed, either the first command or the currently valid setting flashes. The
CL key takes the transmitter back to the display mode.
5.3.3 Entering numbers
When numbers need to be entered into the transmitter programme (e.g. when
scaling or setting the analogue outputs, in calibration or when giving the
transmitter an address), the field is either empty or the currently valid figure is
displayed. Any previously given value is deleted with the CL key.
When the field is empty, a cursor blinks on the right side of the display.
Pressing the arrow keys makes either a blank ' ', a comma ',', a dash '-', a full
stop '.' or a number from '0' to '9' appear on the display. The right character is
selected with ENT; after that the number or numbers move left one step.
Entering numbers is ended with selecting a blank ' ' and pressing ENT. The
last character entered can be deleted with CL. If CL or ENT key is pressed
when the field is empty, the programme returns to the previous display.
With some commands (e.g. calibration) the figures are changed using the ar-
row keys. When an arrow key is pressed continuously for a while, the numbers
start changing at an increasing rate.