Thunderbolt Monitor Kit Manual v5.0.6
Page 7
3/8/2020
When done with changing parameters, press the Menu (+) with a long press until the
“Save Settings?” prompt appears. The default setting for “Save Settings?” is “No”. That
means if you exit at this point, the setting you have changed will only be in effect until
power is recycled. Once you have selected Yes or No for “Save Settings?”, exit the
menu by pressing the Menu (+) key with a long press again. The kit is rebooted after
saving to EEPROM.
Not all values displayed in Settings can be changed or saved to memory. Table 1 below
gives a list of all settings, the default value as shipped and whether they can be saved to
non-volatile memory.
Menu Settings:
Settings available through the menu are normally saved to EEPROM and restored
automatically after a power off cycle. A few parameters cannot be saved.
Parameter
Note
Default Value
Saved to EEPROM
Time Reference
1
GPS
Yes
Time Zone
-6 (US Central Time)
Yes
GPS Week Fix
2
1
Yes
GPS Offset Auto
Yes
Yes
GPS Offset
3
18
Yes
Combine Alarms
4
No
Yes
Leap Sec. Alarm
Yes
Yes
GPS Week Alarm
2
No
Yes
Test Alarms
5
Off
No
Longitude
6
Read Only
Latitude
6
Read Only
Display Ext Temperature
7
Off
Yes
Firmware Version
8
TBMon v5.0.5
Read Only
Notes:
1) GPS, UTC, Local Time with DST, Local Time without DST or Sidereal Time can
be selected.
2) GPS Week Fix is used to convert the erroneous date provided by the
Thunderbolt after July 30, 2017. Add 1 every 19.7 years using this menu option.
See Reference 7. When GPS Week Alarm is selected, the minor alarm will turn
on one week prior to the next GPS Week Rollover.
3) GPS Offset value is only used if GPS Offset Auto is NOT selected and if UTC or
Local Time is selected. If GPS Offset Auto is selected, the GPS Offset menu
displays the actual value of GPS offset provided by the Thunderbolt and the
value cannot be edited. If GPS Offset Auto is not selected, the GPS Offset can
be changed and is saved to EEPROM.
4) When selected, both Minor and Major (Critical) alarms activate the Critical alarm
output. When this option is selected, the Minor Alarm output is still driven when a
Minor Alarm condition exists.
