Sekonic ST-50M - Chapter 4. Basic Operation; Starting and Stopping Recording

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CAUTION
Be sure to keep the DIP swit ch No. 5 to No. 8 OFF state.
Chapter 4. Basic Operation
4-1. To start and stop recording
Turn ON the power switch. Wait 4.5 minutes or less till the
two pens get their positions to start recording. To stop re-
cording, turn OFF (
【
】
) the power switch.
4-2. To change chart speed
①
Press the
【
FUNCTION
】
key once while the normal
measurement screen is displayed. The
『
MODE
』
and
『
SPEED
』
indications will appear on the screen, with
the chart speed displayed, blinking.
②
Select the desired speed using the
【▲】
or
【▼】
key,
then press the
【
ENTER
】
key. The chart speed indi-
cation will stop blinking to show the setting has been
completed.
③
To return to the normal measurement screen, press
the
【
FUNCTION
】
key.
4-3. To select Celsius or Fahrenheit
You can select Celsius (°C) or Fahr-
enheit (°F) by turning the DIP switch
1 OFF or ON. Celsius is initially se -
lected.
4-4. Power saving mode
To reduce the power consumption of the batteries, turn ON
the
【
BATT. SAVE
】
switch.
Reference
When the
【
BATT. SAVE
】
switch is turned ON, the chart
speed will be set to 2.5mm/h and the battery life will be
as long as about 4 months (ST-50M) / 6 months (ST-
50A). We recommend you to select this mode in case
of unattended operation for a long time.
Reference
・The relation between available chart speeds and re-
cording periods is as shown below:
Chart speed Recording period
20mm (abt. 0.79 in.) /h 20 days approx.
10mm (abt. 0.39 in.) /h 1.5 months approx.
5mm (abt. 0.20 in.) /h 3 months approx.
2.5mm (abt. 0.10 in.) /h 6 months approx.
華氏（
Fahrenheit ( °F)
ON
1 2 3
・
The display returns to the measurement screen if no
operation isperformed within one minute.
CAUTION
When using with batteries, if the remaining battery level be-
comes low, the battery level indicator may show an extremely
low level when the power is turne d on or when the pen is moved.
In this case, a reset may be applied, or writing to the SD card
may not be performed. Please be aware that this is not a mal-
function.