Tektronix B020000, Руководство пользователя

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SPG422 Component Digital Sync Generator User Manual
2–1
Operating Basics
There is one input and several different kinds of outputs available from the
SPG 422. This section explains what these signals are and how to use them.
Figure 2–1: Front panel of the SPG 422
Genlock
The genlock input accepts either NTSC, PAL, or CW inputs. The SPG 422
expects the input to be an Analog Black reference signal either with or without
burst. If burst is not present, then the SPG 422 can lock to the sync (instead of
burst lock). Configure the genlock as either a loopthrough or two terminated
inputs.
You can change the timing to compensate for any delays inherent in your system.
Please note that the SPG 422 cannot auto-detect the genlock input standard.
Configure the genlock through the front panel or the RS-232 remote control.
Setting up the Genlock Input signal has three parts: selecting video standard,
selecting input configuration, and setting timing offset.
Genlock Video Standard
There are two different video standards to choose from (NTSC or PAL). Also
you can choose between burst lock and sync lock.
You can also select from a list of Continuous Wave frequencies: 3.58, 4.43, 1.0,
5.0, or 10.0 MHz.
If the genlock is set to burst lock but the Input signal has no burst or it suddenly
loses burst, the menu display of the SPG 422 will say: “Reference Unknown”.
All output signals will remain locked to the internal oscillator.