HD2301
- 6 -
V1.7
D ESCRI PTI ON OF TH E FUN CTI ON S
The keyboard of t he t herm ohygrom et er
H D 2 3 0 1 .0
is com posed of
double- funct ion
keys. The funct ion on t he key is t he " m ain funct ion" , while t he one above t he key is
t he " secondary funct ion" .
When t he inst rum ent is in st andard m easur em ent m ode, t he m ain funct ion is act ive.
I n t he m enu, t he secondary funct ion is enabled; press t he
D ATA+ UN I T
keys t oget her
t o open t he m enu.
The pressing of a key is accom panied by a short confirm at ion " beep" : a longer " beep"
sounds if t he wrong key is pressed. Each key specific funct ion is descr ibed in det ail
below.
This key has t wo funct ions:
•
ON / OFF:
press t his k ey t o t urn t he inst rum ent on and off.
The t urning on enables all display segm ent s for a few seconds, st art s an
Au t o- t e st
including t he det ect ion of t he probe connect ed t o t he input , and set s t he inst rum ent
ready for norm al m easurem ent .
MIN
cm
min
s
2
3
m
µ
m
k
>>>
•
AUTO/ OFF:
t he
Aut oPow e r Off
funct ion can be disabled by sim ult aneously
pressing t his key and t he " HOLD" key when t urning t he inst rum ent on.
During t urning on, should no probes be connect ed, t he
" N O_ PRBE_ SER_ N UM "
m essage is displayed in t he line for sym bols for a few seconds, and in t he m ain line a
series of dashes appears while t he
" ERR"
m essage replaces t he t em perat ure.
When t he probe is insert ed int o a funct ioning inst rum ent , t he
" N EW _ PROB_ D ET"
( New probe det ect ed) m essage appears: as t he dat a are capt ured upon t urning t he
inst rum ent on, it is necessary t o t urn it off and on again.
Ca u t ion !
Replace t he probes when t he inst rum ent is off.
ON - OFF a n d AUTO- OFF
