GRA & AFCH Divergence Meter User manual

NIXIE TUBES CLOCK
OPERATING INSTRUCTION
2036
Release 1.59
GRA & AFCH

GENERAL GUIDE
1. Press “Mode” to change from mode to mode. Each mode is explained in detail on the following
pages.
TIMEKEEPING MODE
To set the digital time
1. Hold down “Mode” while in the Timekeeping Mode until the hours digits start to flash. The hours
flash because they are selected.
2. Press “Mode” to change the selection in the following sequence:
Once you reach the Timekeeping display, you have to hold down “Mode” again to display
flashing hours.
While the digits are selected (flashing), hold down “Mode” to return to Timekeeping Mode
without saving.
3. While any digits are selected, press “Up” to increase the number, or “Down” to decrease the
number. Holding down “Up” or “Down” changes the current selection at high speed.
4. After you set the time, press “Mode” to select the Timekeeping Mode.
If you do not operate any button for a few minutes while selection is flashing, the flashing stops
and the clock goes back to the Timekeeping Mode automatically.
DATE MODE
To set the date
1. Hold down “Mode” while in the Date Mode until the all digits start to flash.
2. Press “Mode” to change selection in following sequence:
While the digits are selected (flashing), hold down “Mode” to return to Timekeeping Mode
without saving.
3. Press “UP” or “Down” button to switch between dd/mm (31/12/99) format and mm/dd
(12/31/99) format.
4. While any digits are selected, press “Up” to increase the number, or “Down” to decrease the
number. Holding down “Up” or “Down” changes the current selection at high speed.
5. After you set the date, press “Mode” to select the Date Mode.
If you do not operate ant button for a few minutes while a selection is flashing, the flashing
stops and clock goes back to the Date Mode automatically.
Time Date Alarm 12/24
Time mode
TemperatureNight Mode
Time Date Alarm
Time keeping mode
Days Months
YearsDate mode
dd/mm or mm/dd
date format

The clock does make validation for correct date. So clock not to return to Date Mode if date is
incorrect.
ALARM MODE
When the Daily Alarm Function is switched on, the alarm sounds at the preset time each
day. Press any button to stop the alarm after it starts to sound.
To set the alarm time
1. Hold down “Mode” while in Alarm Mode until the hour digits start to flash. The hour digits flash
because they are selected.
2. Press “Mode” to change selection in the following sequence.
3. Press “Up” or “Down” buttons to increase or decrease selected digits. Holding down buttons
changes the selections at high speed.
4. Daily alarm on/off mode is representing by upper separate dots, press “Up” or “Down” to enable
or disable daily alarm.
Entering in Alarm Mode always switch daily alarm on.
If you do not operate any buttons a few minutes while a selection is flashing, the flashing stops
and the clock goes to the Timekeeping Mode.
12/24 Hours Mode
To change 12/24 mode
1. Enter in 12/24 mode settings, by holding down “Mode” button until 12 or 24 digits start to
flash.
2. Press “Up” or “Down” buttons to switch between 12 and 24 modes.
3. After you set time format press “Mode” button to return to Timekeeping mode.
If you do not operate any buttons a few minutes while a selection is flashing, the flashing stops
and the clock goes to the Timekeeping Mode
Temperature Mode
To change temperature format Celsius/Fahrenheit or adjust showings of sensor
1. Select Temperature Mode, pressing the mode button several times...
2. Enter in temperature mode settings, by holding down “Mode” button until digits start to flash.
3. Press “Up” or “Down” buttons to switch between Celsius and Fahrenheit formats.
4. Press “Mode” button to save settings and return to Temperature mode.
Hours Minutes Seconds
Daily alarm on/offTimekeeping mode
Celsius / Fahrenheit
Temperature format Adjustment
of temperature sensor
Temperature
Mode

web-site: www.gra-afch.com
N i g ht M o d e
Night mode allows you to set the daily tubes and LED backlight shutdown time (hour) and the
daily tubes and RGB backlight activation time (hour). The night mode activation and deactivation
times are set exclusively in the 24-hour format. When the clock is in night mode, pressing any button
will exit the night mode. When configuring the night mode, the digits 01 are displayed on tubes 5
and 6 –OFF:ON:01
A c c e s s o ri e s
Temperature Sensor (DS18B20): it must be connected to TLS connector before turning on the
clock.
RGB LED Backlight
To disable LED backlight
Hold down “Down” until the LED backlight turns off.
To enable LED backlight
Hold down “Up” until the LED backlight turns on.
To fix color of LEDs
Press “Down” button.
To resume automatic LEDs color changing
Pres “Up” button.
POWER ON SELF TEST
Immediately after a clock is powered on Self-Test is starting in the following sequence:
1. Red LEDs on.
2. Green LEDs on.
3. Blue LEDs on.
4. Tubes test which display all digits from 0 to 9 on all tubes simultaneously.
5. Firmware version.
6. Sound test.