GM-TTT - Alpermann+Velte
GM-TTT - Alpermann+Velte
GM-TTT - Alpermann+Velte
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Installation & Operation Manual <strong>GM</strong>-<strong>TTT</strong><br />
Page 37<br />
Select mode:<br />
This installation selects between two kinds of handling the time of an down-counting timer. It<br />
influences the time addresses only, not the data of the LTC(MTD).<br />
6 6-digits operating mode: the time addresses of the LTC output will be prepared for a<br />
LTC reader display, which only displays hours/minutes/seconds. It is supposed, that<br />
the LTC reader adds one frame to compensate for delay as it is a recommended<br />
practice. In a 6-digits display the down-counting timer reaches zero as soon as the<br />
seconds switches from 1 to 0. Compared with the 8-digits operating mode the time<br />
addresses get a one second minus one frame addition.<br />
Down-counting<br />
hours:minutes:seconds(:frames<br />
)<br />
Time addresses,<br />
6-digit mode<br />
LTC display,<br />
8 digits<br />
LTC display,<br />
6 digits<br />
00:00:02 (:01) 00:00:02:00 00:00:02:01 00:00:02<br />
00:00:02 (:00) 00:00:01:24 00:00:02:00 00:00:02<br />
00:00:01 (:24) 00:00:01:23 00:00:01:24 00:00:01<br />
etc.<br />
00:00:01 (:01) 00:00:01:00 00:00:01:01 00:00:01<br />
00:00:01 (:00) 00:00:00:24 00:00:01:00 00:00:01<br />
00:00:00 (end) 00:00:00:23 00:00:00:24 00:00:00<br />
8 8-digits operating mode: the time addresses of the LTC output will be prepared for a<br />
LTC reader display, which displays the frames as well. It is supposed, that the LTC<br />
reader adds one frame to compensate for delay as it is a recommended practice. In a<br />
8-digits display the down-counting timer reaches zero if even the frames have 00. If<br />
the 8-digits mode is selected but a 6-digits display used, the time at the display<br />
appears to be one second in advance.<br />
Down-counting<br />
hours:minutes:seconds(:frames<br />
)<br />
Time<br />
addresses,<br />
8-digit mode<br />
LTC display<br />
8 digits<br />
LTC display<br />
6 digits<br />
00:00:02 (:01) 00:00:01:01 00:00:01:02 00:00:01<br />
00:00:02 (:00) 00:00:01:00 00:00:01:01 00:00:01<br />
00:00:01 (:24) 00:00:00:24 00:00:01:00 00:00:01<br />
00:00:01 (:23) 00:00:00:23 00:00:00:24 00:00:00<br />
etc.<br />
00:00:01 (:01) 00:00:00:01 00:00:00:02 00:00:00<br />
00:00:01 (:00) 00:00:00:00 00:00:00:01 00:00:00<br />
00:00:00 (end) 23:59:59:24 00:00:00:00 00:00:00
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