Manual

page 7
5.0 The User Interface
The user interface consists of a custom LCD display, an audio indicator, 5 push buttons
and a sensor actuator.
5.1 Display Conventions
1. To display letters with the 7 segment numeric display, the following pseudo-alpha-
numerics are used:
Numbers:
0123456789
Letters:
ABCDEFGHI J LNOPQRSTUXYZ
Symbols:
?- .
2. The instrument will indicate whether a particular mode lets you change a parame-
ter by showing the word “SET” in the upper left corner of the display. Be careful
not to change any parameter inadvertently.
3. °C°F appear simultaneously, to indicate the sensors’ attenuation in decibels.
4. Values higher than ±1999 and lower than ±0.01 are displayed in powers of 10
±3
.
Either a “10
3
” or “10
-3
” will appear above and to the right of the displayed value, if
this is required, and the value will be rounded off to 3½ digits. Examples follow:
actual
value +20
°
C+68
°
F 23612 1104.2 17.688
ppmV lbs H
2
0/mmSCF grams H
2
0/meters
3
actual
value -100
°
C-148
°
F 0.013849 0.00092115 0.00001475
ppmV lbs H
2
0/mmSCF grams H
2
0/meters
3
˚C
DEWPOINT
˚F
DEWPOINT
x10
3
PPM
DEWPOINT
LBS
DEWPOINT
DEWPOINT G/M
3
˚C
DEWPOINT
˚F
DEWPOINT
x10
-3
PPM
DEWPOINT
x10
-3
LBS
DEWPOINT
x10
-3
DEWPOINT G/M
3