User Bits Mode - Alpermann+Velte AV-MTD G 30 TTT Operating Manual

User Bits Mode

Basically G30TTT generates the LTC(MTD), i.e. the user bits carry data for the use of the MTD
system. But it is also provided to switch the user bits mode. In principle three basic modes can
be defined:
• Generating LTC(MTD): data for the use of the MTD system.
• Manually set values, once set they remain fixed.
• Date: different formats are available to set the day/month/year into the user bits.
In the menu (line USER (SET, TTT ...)) the user bits mode can be pre-selected. Key enter
switches between the following modes:
USER SET The manually set values will be generated, see below.
USER TTT LTC(MTD) will be generated: data for the use of the MTD system.
USER 2 Date of format s
USER 3 Date of format S
S , bit 0:
1
S , bits 1/2:
1
S , bit 3:
1
S , bit 0:
2
S , bit 1:
2
S , bit 2:
2
S , bit 3:
2
USER 4 Date of format according to EBU Technical Information I29-1995 (BBC format).
USER 5 Date of format DD MM YY YY (year = four digits).
USER 6 Date of format YY MM DD s
USER 7 Date of format s
USER 8 Date of format s
USER 9 Date of format DD MM YY s
s s s s s s s s represents the manually set user digits. Some of these digits may appear
8 7 6 5 4 3 2 1
together with the date, if the date does not use the complete 8 user digits.
Pressing key set at this menu line the user bits set mode switches on. The display switches to
show the last set values. Using keys hours, minutes, seconds and frames the values can be
changed manually. Key set pressed again quits the set mode and stores the new values.
The selection at this menu serves as a pre-set. Basically G30TTT generates the LTC(MTD). After
a long press at key select - while the menu is switched off - the user bits mode can be
switched between "TTT" (i.e. LTC(MTD) will be generated independent from whatever has been
selected at the menu) and the mode selected at this menu:
LED select off: LTC(MTD) will be generated, all functions of the MTD system are available.
•
• LED select flashes: the user bits are of format according to the selection at the menu. The
MTD system does not work.
Example: With selection "USER 2" at the menu and LED select off, the unit generates
LTC(MTD). If the LED flashes the unit generates the date according to format 2. With selection
"USER TTT" at the menu, the unit generates LTC(MTD) always, the key select cannot switch the
mode.
Operating Manual AV-MTD G 30 TTT
s DD MM YY.
8 7
S DD MM YY. S and S
2 1 1
set to 1, if the status data of the DCF77/GPS receiver indicate
lock (receiver synchronises to the antenna signal).
current time zone: 0/0 = UTC, 1/0 = CET, 0/1 = CEST.
set to 1, if the status data of the DCF77/GPS receiver indicate a
Daylight Saving Time switching.
not used.
Millennium bit, =1 if year ≥ 2000.
not used.
not used.
s .
2 1
s YY MM DD.
8 7
Y YM MD Ds .
8 1
s .
2 1
are status data:
2
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