6
★
While in the All-Segments-Light-Up mode, if Button D is pressed , EL backlight illuminates the
display for 2 to 3 seconds.
★★
While in the Buzzer mode, if Button C is pressed, the buzzer rings for 5 to 6 seconds, and if Button
D (SET button) is kept pressed for 5 to 6 seconds, the display returns to the normal TIME/
CALENDAR display.
2. Pressure Sensor
●
Remarks on atmospheric pressure
Pressure index value is determined by the following calculation.
Pressure index value = Output value from sensor – Offset value
In the case of the display in Illustration 2,
Pressure index value = 1452 – 1281 = 171
so the pressure index value is 171.
In order to calculate the atmospheric pressure out of the pressure index value, the caluculation is
as follows.
Atmospheric pressure (hPa) = ( Pressure index value + 5 ) x 2.5 + 550
In the case of the display in Illustration 2,
Atmospheric pressure (hPa) = ( 171 + 5 ) x 2.5 + 550 = 990 (hPa)
so the atmospheric pressure is 990 hPa.
TECHNICAL GUIDE
Cal. DH33A
1. How to set the watch to the TEST mode.
●
To show the "TEST mode", reset the circuit while keeping Button A (MODE button) and Button C
(SELECT button) pressed. (See Illustration 1 and 2.) If this is not done properly, the display becomes
blank or return to the normal TIME/CALENDAR display. (To reset the circuit, refer to “I. REMARKS
ON BATTERY CHANGE” on page 3.)
Illustaration 1
Button C
Button A
Offset value
Output value
from sensor
Illustaration2 - Offset
While in the TEST mode, the mode changes as follows with each press of Button A.
All-Segments-
light-up mode
Temperature
mode
Atmospheric pressure/
Water depth mode
Normal Time/Calendar mode
▼
▼
▼
▼
▼
A
A
A
A
D
Press for 5 to 6
seconds
Buzzer mode
★
★★
