EXTECH
INSTRUMENTS
5
SDL900
‐
en
‐
GB_V1.4
5/15
Data
Record
(Maximum
and
Minimum
Reading)
Press
the
REC
button
to
start
the
data
record
function.
The
LCD
will
display
a
REC
symbol.
Press
the
REC
button
again,
and
the
REC
MAX
symbol
along
with
the
maximum
reading
value
will
be
displayed.
Press
the
REC
button
again
to
display
the
minimum
value.
The
LCD
will
also
show
the
REC
MIN
symbols.
To
exit
this
mode,
press
and
hold
the
REC
button
for
two
seconds.
The
meter
will
return
to
the
normal
operating
mode.
Note:
When
making
DC
magnetic
field
measurements
in
the
RECORD
mode,
the
meter
cannot
be
changed
from
North
pole
to
South
pole,
or
vice
versa.
Set
Mode
Press
and
hold
the
SET
button
for
two
seconds
to
enter
the
Set
Mode.
Momentarily
pressing
the
SET
button
will
cycle
throughout
the
seven
functions.
They
are
(in
order):
DATE………
Set
clock
(Year/Month/Date,
Hour/Minute/Second)
SP
‐
T……….
Set
sampling
time
(from
0
~
3600
seconds)
POFF…
……Auto
power
OFF
management
BEEP……...
Set
beeper
ON/OFF
DEC…
……..Set
SD
card
Decimal
character
(comma
for
metric
or
decimal
for
imperial)
SD
‐
F……….
Format
the
SD
memory
card
UNIT…
…….Select
the
magnetic
field
units
(mT:
milli
Tesla
or
G:
Gauss)
Note:
Press
and
hold
the
SET
button
for
two
seconds
when
in
the
Set
Mode
to
exit.
Set
the
Clock
Time
and
Date
When
the
LCD
displays
DATE
,
press
the
ENTER
button.
Use
the
▲
and
▼
buttons
to
adjust
the
value
(starting
with
the
current
YEAR).
After
the
desired
value
is
set,
press
the
ENTER
button
to
step
to
the
next
item.
After
all
six
parameters
are
set,
press
the
ENTER
button
to
save
the
settings.
Note:
The
SDL900
internal
battery
allows
the
internal
clock
to
run
precisely,
even
after
it
is
switched
OFF
(as
long
as
the
battery
is
fresh).
Set
Sampling
Time
When
the
LCD
displays
SP
‐
T
,
press
the
ENTER
button.
Use
the
▲
and
▼
buttons
to
adjust
the
sampling
time
(rate
of
datalogging)
to
0,
1,
2,
5,
10,
30,
60,
120,
300,
600,
1800,
or
3600
seconds.
After
the
desired
sampling
time
is
selected,
press
the
ENTER
button
to
save
the
setting.
