Technical data

Installation & Operation Manual GM-TTT
Page 31
3.2.5 USER MOD.: Data Content of the Binary Groups
Press the enter button to define the data content of the binary groups. The current selection
appears at the display. Use the
↑ or ↓ button to step through the different items. Press the
enter button to confirm your choice and to quit the menu.
Please notice: in the tc operating mode the data content of the binary groups will be
overwritten, if the Jam-Sync mode includes a transfer of the binary groups.
Digit 8
Digit 7 Digit 6
Digit 5 Digit 4 Digit 3 Digit 2
Digit 1
0 SET The binary groups get user defined data, see 3.2.2 SET USER.
1 TTT The binary groups get multiplexed data for use in the MTD Time-Timer-Time Code
System. The specific LTC(MTD) will be generated.
2 DATE The binary groups 1 to 6 get the date of the internal clock, BCD format: day =
groups 5+6 (“minutes“), month = groups 3+4 (“seconds“), year = groups 1+2
(“frames“). The year is coded with two digits. The groups 7+8 (“hours”) get the
user defined data, see 3.2.2 SET USER. Look at the table of the end of this chapter
for a survey of the date formats.
3 STATUS The binary groups 1 to 6 get the date of the internal clock, same as at 2 DATE.
The groups 7+8 (“hours”) contain status information:
Bit(s) Group 7 (“units of hours“):
0 = 1 if the time addresses of the time code output are synchronised to a
reference time, which is locked. This bit is set in operating mode time
only. Within the last 24 hours the internal clock must have received a pre-
set from a reference time, which is locked itself. The lock status of the
reference time is indicated by status information of the serial data input
and is visibly indicated by the LED free.
1+2 = time zone of the internal clock: bit 2 bit 1
0 0 = UTC
0 1 = CET
1 0 = CEST.
3 = 1 during announcement start/end of Daylight Savings Time, one hour
before the changing occurs.
Bit(s) Group 8 (“tens of hours“):
0 = 1 during announcement of a leap second, one hour before the
changing occurs.
1 Y2K flag: =1, if the two digits coded year is less 98, else it is = 0. See “5
DATE-2” as well.
2 not used, = 0.
3 not used, = 0.
Look at the table of the end of this chapter for a survey of the date formats.