Nixie Tube Clock ‘Halo’
Issue 3 (01 Nov 2018)
www.pvelectronics.co.uk
- 24 -
1 - Make clock faster
22
Slots Mode
5
0 – Slots disabled
1 – Slots every minute
2 - Slots every 10 minutes (default)
3 - Slots every hour
4 – Slots at midnight
23
RFT Sync Mode
6
0 – DCF / MSF Sync once per day only as
per parameter 24 (default)
1 – DCF / MSF Sync every hour
24
RFT Daily Sync Hour
0 – 23 (default 2)
25
RFT Seek Blanking
0 – Keep tubes lit for DCF / MSF seek
1 – Blank tubes for DCF / MSF seek
(default)
26
Display Mode
0 – standard change of digits
1 – fading digits
2 – fading digits with scrollback effect
(default)
27
Auto date display each
minute
0 – Off
1 – On (default)
7
28
Night Mode Override
Period
0 – 50 (default 0 gives 15 seconds
override)
8
29
Restore default settings
0 – Keep user settings
1 – Restore original default settings
9
Notes:
1. Master Blanking Mode has priority over Night Mode. Use to disable the clock on lock is
in office), or during office hours (eg clock is at home). Complete HV shutdown to save
power and tube life.
2. Night time neons mode is active when night mode is set to dim. During night time
blanking the tubes AND neons are disabled.
3. Clock is fully functional without DCF / MSF / GPS synchronisation. Set time manually.
4. Enter your time zone offset from the synchronisation source. Note that GPS transmits
UTC.
5. Visual effect / cathode poisoning prevention – all digits on all tubes are cycled for 10
seconds. This setting overrides night blanking or dimming for the duration of the effect
(10 seconds).
6. DCF /MSF synchronisation takes place on the hour. If no valid frame is received in 6
minutes, the clock reverts to normal operation.
7. Date will be displayed each minute between 50 and 55 seconds past the minute.
8. Press ‘SET’ briefly during Night Mode to show time for prescribed period.
9. Set this parameter to ‘1’ to restore original default settings. Internal operations will
then load all the original settings and restore the value to ‘0’
