Operator`s manual

Viewing Waveforms, Vectors, and Pictures
7-28
Comparing Two Signals with a Picture
A special picture display (A/Ref Split) combines the external reference signal with Input A in one
picture, alternating the two in horizontal bands (see Figure 7-28). You can use this display to match
the two images for horizontal timing, chroma gain and chroma phase.
In this display the signal from the A Input and the signal on the External Reference connector are
compared using a picture-like display. The picture is divided into horizontal bands, with the two
inputs occupying alternating bands.
If the two signals are both color bars of the same type, for example, both 75% color bars or both
SMPTE bars, any differences will be apparent. Very small timing differences appear as a slight
change in hue between the bands. Gain changes look like brightness differences.
The A/Ref Split display is normally disabled. To enable it:
1. Press the Config button.
2. Select DISPLAY and then press the Enter button.
3. Select SPLIT SCREEN and then press the Enter button.
4. Select A/REF SPLIT and then press the Enter button to toggle between ACTIVE and DISABLED.
5. Press Clr Mnu to exit.
When A/Ref Split is active, turn it on by pressing the Split Screen button. Pressing the Split
Screen button cycles through the following:
•
Reduced size, picture with quarter-size waveform, vector or both
•
Picture Guard, if active, showing the Magni logo in the lower right corner.
•
A/Ref Split (if active)