Clock - UTC/Chronometer Display
Figure 004
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Clock - UTC/Chronometer Display
Figure 004A
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Post SB 31-1133 For A/C 201-203,
-
The CHR time is displayed in digtal form on the upper window: minutes (item 10) and seconds (the next two digits marked SEC).
-
The chronometer is controlled by a pushbutton switch located in the right upper corner of the clock face, identified CHR and which can select two sequences when pressed (in): . First pressure: the chrono time starts counting followed by the minutes. . Second pressure: the chrono time stops counting to restart the CHR time the pushbutton RST (item 9) has to be pressed.
**ON A/C ALL
(4) Date
**ON A/C 001-049, 051-099, 101-105, 201-203,
(Ref. Fig. 005)
(a) Date display Date display is obtained by placing the UTC selector switch in the RUN position and pressing the DATE pushbutton switch (item 14). The date is then displayed in lieu and place of the UTC display according to the following cycle:
-
Indication of the day (item 12) and the month (item 13) for one second, then blank for half second,
-
Indication of the year for one second.
NOTE : The date is displayed only if specifically selected upon
____ crew request or if set for updating purposes.
(b) Setting of date The DATE pushbutton switch must be pressed. Setting of date is performed by placing the UTC selector switch successively in the following positions:
-HSD : the day display (item 12) increments at a rate of one day per second
-MSM : the month display (item 13) increments at a rate of one month per second
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Clock - Date Display Figure 005
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-HLDY : the two right digits of the year display increment at a rate of one year per second (the two left digits are blank)
-RUN : the clock starts normal operation.
Remark: It is possible to have the time of the day displayed
again instead of the day and month by pressing the DATE
pushbutton switch once more.
R **ON A/C 106-149, 151-199, 201-299, 301-399, 401-499,
Post SB 31-1133 For A/C 201-203,
-Display in lieu and place of UTC display: Indication of the days by the right two digits Indication of the months by the next two digits on the left
(a)
Not Applicable
(b)
Not Applicable
-Displayed in lieu and place of the seconds: Indication of the year
-Date display The date is displayed by pressing the DATE pushbutton switch when the time of the day is displayed.
**ON A/C 062-099,
(5) Interface GPS/CLOCK The clock is displaying the GPS time received from the GPS receiver when the GPS/INT SET switch is in the GPS position. If the signal from the GPS fails, the clock displays dashes, until the internal time base takes over. This internal time base starts counting from the last GPS time displayed. Furthermore if the last displayed time is erroneous, the time base starts counting from the time scheduled by the vendor at the first entry into service of the clock (generally 0h 0mn 0s 1st january). This means that as long as the GPS time is available, the internal time base cannot be set differently from the GPS time. On the INT position, the clock displays the internal time base, but synchronized on the GPS time, until the GPS time fails.
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R **ON A/C 106-149, 151-199, 201-299, 301-399, 401-499, Post SB 31-1133 For A/C 201-203, NOTE : The date is displayed only if specifically selected upon crew____ request or if set for updating purposes. **ON A/C ALL
B. Internal Arrangement **ON A/C 001-049, 051-099, 101-105, 201-203,
R (Ref. Fig. 006) **ON A/C 106-149, 151-199, 201-299, 301-399, 401-499, Post SB 31-1133 For A/C 201-203, (Ref. Fig. 006A) **ON A/C ALL
4. Interface_________ **ON A/C 001-049, 051-099, 101-105, 201-203,
R (Ref. Fig. 001) **ON A/C 106-149, 151-199, 201-299, 301-399, 401-499, Post SB 31-1133 For A/C 201-203, (Ref. Fig. 001A)
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