Tektronix 1740A/1750A - Manual (Page 92)

Basic Measurements
1740A/1750A Series Waveform/Vector Monitor User Manual
4-11
VECTOR PHASE
Burst Vector
Sync Dot
0
° Axis
Sync Dot
Relative angle indicates
degree of SC/H phase.
Figure 4-6. NTSC dual-dot SC/H display.
VECTOR PHASE
0
° Axis
Burst Vector
Sync Dot
Figure 4-7. NTSC single-dot SC/H display.