Nixie Tube Clock ‘Halo Chroma’
Issue 1 (1 April 2021)
www.pvelectronics.co.uk
- 3 -
1. INT
RODUCTION
1.1 Halo Chroma - Features
Hours, Minutes and Seconds display
Drives Z560M, Z5600M, GN-4, ZM1022 and many other compatible tubes
Uses a Quartz Crystal Oscillator as the timebase
12 or 24 hour modes
Programmable leading zero blanking
Date display in either DD.MM.YY or MM.DD.YY or YY.MM.DD format
Programmable date display each minute
Scrolling display of date or standard display
Alarm, with programmable snooze period
Optional GPS / WiFi / XTERNA
synchronisation with status indicator LED
Dedicated DST button to switch between DST and standard time
Supercapacitor backup. Keeps time during short power outages
Simple time setting using two buttons
Configurable for leading zero blanking
Double dot colon neon lamps
11 colon neon modes including AM / PM indication (top / bottom or left /
right), railroad (slow or fast) etc.
Seconds can be reset to zero to precisely the set time
Programmable night mode - blanked or dimmed display to save tubes or
prevent sleep disturbance
Rear Indicator LEDs dim at night to prevent sleep disturbance
Weekday aware ‘Master Blank’ function to turn off tubes and LEDs on
weekends or during working hours
Separate modes for colon neons during night mode
Standard, fading, or crossfading with scrollback display modes
‘Slot Machine’ Cathode poisoning prevention routine
Programmable RGB tube lighting – select your favourite colour palette
729 colours possible. Have a different colour or your choosing every
hour, or autochanging colours
Not AC frequency dependent – works in all countries
Supports output Sync Pulse for our DekaDuo Dekatron Driver Board
All user preferences stored to non-volatile memory
Additional wireless functions if XTERNA module used:
- Display of outdoor temperature in Celsius or Fahrenheit. Configurable.
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Min / Max temperature in last 24 hours
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Wireless, Auto Sync of time from GPS with auxilliary TCXO
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GPS Sync time, and time since last GPS Fix
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Voltage of XTERNA module battery
