Nixie Clock ‘SN18’
www.pvelectronics.co.uk
- 25 -
Notes:
1: Recommended to seek in the night for best reception. Synchronisation at 2am
will pick up the DST change immediately after the change.
2: This is the number of minutes the clock will try for synchronisation.
3: Clock is fully functional without WWVB / DCF synchronisation. Set time
manually.
4: Based on DCF signal.
5: Based on WWVB signal, which transmits UTC (‘Greenwich Mean Time’).
6: Set this to ‘1’ to disable Auto DST adjust on WWVB Sync – eg. Arizona, USA
does not observe DST. Only active in WWVB Sync mode.
7: Tube will blank to save tube life. Available is 1 hour multiples. If enabled by
parameter (4), clock will also attempt synchronisation every hour during
blanking, at 5 minutes past the hour.
8. Press ‘SET’ briefly during blanking to show time for prescribed period.
Parameter
Description
Values
1
12 / 24 Hr mode
0 – 12 Hr
1 – 24 Hr (default)
2
Radio Time Rx Hour
0-23 (default 2)
1
3
Radio Time Rx period
(mins)
0-50 (default 10)
2
4
Radio Time Signal Source
0 – No Radio Time Source
3
1 – DCF (default)
2 - WWVB
5
Local time offset from
Radio time
0 – no offset (Europe
4
) (default)
1 – minus 1 hour (UK & Ireland
4
)
2 – minus 2 hours
3 – minus 5 hours (USA Eastern
5
)
4 – minus 6 hours (USA Central
5
)
5 – minus 7 hours (USA Mountain
5
)
6 – minus 8 hours (USA Pacific
5
)
7 – plus 1 hour (Eastern Europe
4
)
8 – plus 2 hours
6
WWVB Auto DST Disable
0 –Auto DST on WWVB Sync (default)
1 – Disable Auto DST on WWVB Sync
6
7
Night blanking start hour
0-23 (default 0)
7
8
Night blanking stop hour
0-23 (default 0)
7
9
Nixie Underlighting
0 - Always off
1 - Always on (default)
2 - On, and follows tube nightblanking
10
Seconds LED mode
0 - Always operational (default)
1 – Blanks with nightblanking
11
Preferred display mode
0 – Seconds display
1 – On / off (default)
2 – Quick fade
3– Slow fade
12
Nightblanking override
Period (minutes)
0-59 (default 5)
8
13
Crystal base time
calibration factor (secs per
10 days
0 – 99 (default 0)
14
Time calibration /-
0 - minus (default)
1 - plus
15
Alarm snooze period
0 – 6 minutes
1 – 9 minutes (default)
2 – 12 minutes
3 – 15 minutes
