To Initialize The Calibrated Value; Chapter 11. Pen Position Adjustment; Periodic Inspection; To Check The Adjustment Status - Sekonic ST-50A Operation Manual

Chapter 11. Pen Position Adjustment

④ When the humidity is stabilized, press the 【ENTER 】 key.
The 『75.0 』 indication will start blinking.
⑤ Use the 【▲】 or 【▼】 key to enter the humidity value that
corresponds to the present temperature shown on the
humidity calibrator or the value indicated on the humidity
bath, then press the 【ENTER 】 key.
⑥ The indication on the left side starts count from 1 to 5,
then the humidity indication will stop blinking to show the
setting has been completed.
⑦ Press the 【ALARM 】 key to return to the "Sensor calibra-
tion status" screen.
CAUTION
• When this setting has been completed, all the keys
but the 【ALARM 】 key will be inactive.
• If the 2-point calibration of the humidity sensor is
made, the humidity value calibrated in paragraph
10-3 will become invalid.
• To cancel this setting, press the
proceed to the next setting item.

10-5. To initialize the calibrated value

Follow the procedure below to initialize the calibrated val-
ue. If it is not necessary, skip this paragraph.
① When the "Sensor calibration status" screen (C0) is dis
played, press the 【ALARM 】 key 5 times. The 『C9 』 indi-
cation will appear with the 『CLEAR 』 indication blinking
on the screen.
② Press the 【▼】 and 【ENTER 】 keys together. The cali-
brated value will be cleared and the "Sensor calibration
status" screen (C0) will be restored.
CAUTION
• To initialize means to restore the factory-setting.
• To return to the normal measurement screen, turn
OFF (【 】 ) the power switch.
11-1. Function overview
Errors in recording due to extension or contraction of the
chart paper can be adjusted. If it is not necessary, skip this
chapter.

11-2. To check the adjustment status

Turn ON the power switch while pressing the
【ENTER 】 keys together. The "Pen position adjustment sta-
tus" screen will be displayed.
CAUTION
During this operation, no switch can be used until the
pens stop moving completely and the blinking indica-
tion becomes still.
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【ALARM 】 key and
-
【▼】 and