Tektronix 1760 - Manual (Page 63)

Operator’s Checkout Procedure
1760 Series Component Waveform/Vector Monitor User Manual
2-25
13. SCH Display (Option SC Only)
The SCH display mode provides a vector display of the
subcarrier-to-horizontal-sync phase relationship. (SCH
measurements appear on page 4-10.)
For NTSC operation, verify that REF is set to internal, then
select SCH display mode. This provides a dual-dot display,
as shown in Figure 2-17. Select EXT REF . This provides the
single-dot display, shown in Figure 2-18.
For PAL operation, the REF selection does not affect the
display. A sample PAL display is shown in Figure 2-18.
VECTOR PHASE
Figure 2-17. NTSC SCH display with internal reference selected.