Tektronix SPG8000 Technical Reference page 183

Master sync / clock reference generator
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SPG8000 Technical Reference
Mode. When VITC or LTC is selected as the Time of Day source, use the left (◄)
or right (►) arrow button to select from the following synchronization modes:
Follow: The time of day follows the VITC or LTC on the input signal if the
signal is stable for at least 100 consecutive frames.
Synchronize once: The VITC or LTC on the input signal is continuously
monitored until a stable signal is received (at least 100 consecutive frames).
At that time, the time of day synchronizes (once) to this reference.
Synchronize now: The time of day attempts to synchronize with the VITC or
LTC on the input signal when the ENTER button is pressed. A total of ten
attempts to synchronize are made. After ten attempts, no further attempts are
made to synchronize regardless if synchronization occurred or failed. A stable
signal of at least 100 consecutive frames is needed.
Internal. When the Time of Day source is set to Internal, use this menu item to
manually enter the date and time and to activate the time-of-day change.
Select this menu item and perform the following steps to set the Time of Day
in Internal mode:
1. Press the ENTER button to enter the date and time edit mode.
2. Use the left (◄) or right (►) arrow button to select a digit in the time offset to
change. An underline character appears under the selected time digit. The
date and time digits take the following form: YYYY-MM-DD HH:MM:SS.
3.
After you select an offset digit, use the up (▲) or down (▼) arrow button
to change the value of the digit. Repeat for each digit as required for your
date and time.
CAUTION.
When you press the ENTER button, this applies the start time and date
offset. Typically, this causes a disruption to the syncs, so care should be taken
to verify the date and time are correct before activating the time-of-day setting
for Internal mode.
4. Press the ENTER button to confirm the change and set the time.
NOTE.
The manual time of day setting is not automatically reapplied when the
instrument power is cycled. If the instrument powers on in Internal mode, the time
of day will be acquired from the real time clock in the instrument.
The time zone offset must be set to maintain the correct relationship between
UTC and local time.
TIME button menu
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