Tektronix TG8000 User Manual

GPS7 GPS Synchronization and Timecode module
TYPE. Use the le
ft (◄)orright(►) arrow button to select from the following
LTC output signal formats:
Table 3-23: GPS7 module LTC output signal formats
Format Rate Delay range
23.98
24 fps at 23.98 Hz rate
±20.85 ms
24
24fpsat24Hzrate
±20.83 ms
25
25fpsat25Hzrate
±20.00 ms
30
30fpsat30Hzrate
±16.67 ms
30 DF
30 fps drop frame at 29.97 Hz
rate
±16.68 ms
SOURCE. Use the left (◄)orright(►) arrow button to select from the following
LTC signal sources The default value is Local (DST).
Disable: Disables the LTC outputs.
Local (DST): Uses the local time of day with Daylight Saving Time offset
as the timecode.
Local (No DST): Uses the local time of day without D aylight Saving Time
offset as the timecode.
UTC: Uses Coordinated Universal Time as the timecode.
Program Time: Uses the Program Time counter as the timecode.
OFFSET. Press the ENTER button, and then use the left (◄)orright(►) arrow
button to select a digit in the LTC offset value to change. An underline character
appears under the selected offset digit. The time digits take the following form:
HH:MM:SS:FF.
After you select an offset digit, use the up (▲)ordown(▼) arrow button to
change the value of the digit. Repeat for each digit as required for your offset.
Press the ENTER to confirm the offset change.
NOTE. The Offset adjustment allows you to enter a time zone correction of up to
±23:59 hours. However, the ST309 standard only implements codes for time zones
in the range of -12 to + 13 hours. Therefore, when the GPS7 module is set to use
ST309 data as the Time of Day source, it is recommended that the combined
programmed offset from time zone and DST be restricted to the range of -12
to +13 hours.
TIMING. Press the ENTER button to access the LTC TIMING submenu for the
selected LTC output. (See page 3-150.)
OUTPUT LEVEL. Use the left (◄)orright(►) a rrow button to set the signal level
of the selected LTC output between 0.5 V and 5.0 V.
TG8000 Multiformat Test Signal Generator User Manual 3–149

Tektronix TG8000 Specifications

General

Brand	Tektronix
Model	TG8000
Category	Portable Generator
Language	English