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8
KEYBOARD
AND
MENU
DESCRIPTION
Foreword
The instrument keyboard is composed of single-function keys, like the MENU key, and double-
function keys such as the ON-OFF/Auto-OFF key.
In the double-keys, the function in the upper part is the "main function", while the one in the bottom
part is the "secondary function". When the instrument is in standard measurement mode, the main
function is active. In the menu or in conjunction with the FUNC key, the secondary function is en-
abled.
The pressing of a key is accompanied by a short confirmation beep: a longer beep sounds if the
wrong key is pressed.
Each key specific function is described in detail below.
ON-OFF/Auto-OFF key
The instrument is turned on and off using the ON/OFF key. Turning on enables all display segments
for a few seconds, starts an auto-test, and displays the current values of cell constant (CELL) and
temperature coefficient
α
(ALPH). Finally, it sets the instrument ready for normal measurement.
MIN
cm
min
s
2
3
m
µ
m
k
>>>
During turning on, should no probes be connected, the last manually-set temperature appears
in the secondary line. The unit of measurement symbol (°C or °F) starts blinking, and a letter
"m" meaning "manual" appears next to the battery symbol.
The probe's data are captured upon turning the instrument on: if the ERR message appears
in the secondary line, it is necessary to turn the instrument off and then on again.
Replace the probes when the instrument is off.
+
Automatic turning off
The instrument has an
AutoPowerOff
function that automatically turns the instrument off after about
8 minutes if no key is pressed during the intervening time. The
AutoPowerOff
function can be dis-
abled by holding the CAL/
key pressed down when turning the instrument on: the battery symbol
will blink to remind the user that the instrument can only be turned off by pressing the <ON/OFF>
key.
The automatic turning off function is disabled when external power is used. On the other
hand, it cannot be disabled when the batteries are discharged.
