Pluggable-IN-18 6-tube NIXIE clock fully assembled Version Ver.3.0

IN-18 6-tube clock instructions V3.0
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In order to drive the NIXIE tube, some internal equipment are under the High Voltage (up to ~180V DC), please do not use this clock outside or in any wet conditions, please do not touch any part inside the clock when power supply is turned on. Always keep it away from kids.




(For reference only)
Tube Name:
IN-18(Made in the U.S.S.R.)


Tube Diameter: 30mm;


Tube Height: 68mm (no including the legs and the glass nipple);


Digit Height: 40mm;


Digit Width: 22mm;




Clock Supply: 12V DC via 5.5/2.1(or 2.5) Socket;


Max Current: ~850mA;


Clock Size: ~272mm (L)*72mm(W)*20mm(H)(*86mm(H)with IN-18 tube installed);


PCB Size: 260mm*60mm;


PCB Color: Black;


Weight: ~418g(with enclosure,with IN-18 tubes);


The clock works with any standard 12V-DC supply(5.5mm/2.1mm centre positive), use only high-quality adapter!




Features(For reference only)



1).12V DC powered with input reverse polarity protection on board, easy to be used;


2).High efficiency HV circuit, you get almost no heat in HV DC-DC part under 24*7 working condition;


3).DIP style design, Static driving, No Flashing, High Brightness, No blue dots; Pluggable design all NIXIE tubes include middle commas are installed via socket,can rplace by hand;
4).Support 12H or 24H display modes. Leading zero blanking is programmable.
5).Display date in all format: YY.MM.DD or DD.MM.YY or MM.DD.YY or even MM.YY.DD; Can display week info too.
6).Support a lot of different Effects: Normal/ Fading/ Cross Fading/Flash /Loop /Random Loop/ Scroll + Mix1/mix2 for displaying time (* Effects may will be changed in the future). All Effects support “SLOT MACHINE” effect except Mix1&Mix2;
7).High accuracy RTC inside, DTCXO (temperature compensated crystal oscillator) version, High Stability, Highly accurate. It has ±1.9ppm (Equivalent to ±4.94s seconds of month deviation) under 0ºC~+40ºC. Usually you don't need to set the time for over a year;
8).Simple setting by using 3 buttons only and supports IR remote control (optional). Also has a new SNOOZE button.
9).Three alarms with weekends ON/OFF support can be controlled individually.
10).Three programmable Auto Power ON/OFF mode, can turn ON/OFF NIXIE tubes in any time you want. This function can save tubes life.
battery socket on-board for the RTC power which keeps RTC running during power outages. (*Prepare the CR1220 battery by yourself.)
13).Tri-colored RGB LED mounted under the each NIXIE tube. These LED(s) can display   pre-defined auto color change effects.
14).Store user settings in non-volatile memory.
15).Beautiful CAD designed acrylic case made using a laser cutter makes the clock look beautiful;
16).Can install Temperature Sensor(optional);
17).Can Install PIR(Human Sensor Module) (optional) to turn the clock ON/OFF by detecting the human body;
18).8-level adjustable NIXIE tube bright with Auto-brightness feature (it is able to adjust the tube brightness depending on the current environment).
19).Support Wireless GPS Module (optional), can sync time via wireless signal(*Need to have a GPS wireless time station as time signal sender);