6
P3.0 Real Time Clock
From the P1.0 display, press
“
LOG
”
twice to change to the
P3.0 screen. Press SET to enter
“
P3.1
”
to set the real time clock.
The year will be blinking. Press
“
LOG
”
or
“
MIN/MAX
”
to set
the year. Press the SET button to save the setting, or ESC to exit
without saving. Repeat for (P3.2) month, (P3.3) day, (P3.4) 12/24
hour, (P3.5) hour, and (P3.6) minute.
P4.0 Reset
From the P1.0 display, press
“
LOG
”
three times to reset the
A160 to default settings. Press SET to enter
“
P4.1
”
to reset the
settings. Press
“
LOG
”
or
“
MIN/MAX
”
to change to
“
Yes
”.
Press the SET button to save the setting, or ESC to exit without
saving.
P5.0 Rate
The sampling rate is set by SpecWare software (see p. 9). What-
ever value is shown on the LCD will be over
-
ridden when the log-
ger is launched.
CO
2
Manual Calibration
Manual calibration should be done outdoors on a sunny day with
fresh air and plenty of ventilation, resulting in a CO
2
value of
about 400 ppm. Do not calibrate on a rainy day because high
humidity will affect the CO
2
level. Do not calibrate in places with
crowds of people or in the vicinity of high concentration CO
2
sources such as ventilation outlets or fireplaces.
Place the A160 in the calibration site and turn it on. Simultane-
ously press and hold
“
SET
”, “
LOG
”,
and
“
MIN/MAX
”
for at
least 1 second to enter CO
2
calibration mode.
“400
ppm
”
and
“
CO
2
”
will be blinking on the LCD. Wait about 30 minutes. The
blinking will stop after the calibration completes. Press and hold
“
RESET
”
for more than 1 second to exit the calibration process.
