Section 5 - Vector Mode
5-2
VM700A Option 01 (NTSC) & Option 11 (PAL) User Manual
Additional information is included on the left side of the display to indicate the
noise reduction if Average is on; and, for the PAL vector display, if Sound-in-
Sync is ON or OFF. Also, for the PAL vector display, there is a line added to the
information on the right side of the display to indicate the V-axis being
displayed.
The control knob is used in conjunction with the Move/Expand button to vary
the display phase Angle and Gain, and with the Display and Graticule buttons to
set the display’s Intensity. When the Select Line button is pressed, the control
knob performs a digital line select function.
Display Phase Angle
When entering Vector mode, the default function of the control knob is to vary
the display phase Angle (the Move LED is on). As a phase shifter, the control
knob rotates the display in one-tenth degree increments, as indicated by the
Angle (deg) readout in the upper right corner of the display.
Expand (Gain) Range
When the Expand button is pressed, the control knob becomes a calibrated vector
Gain control. Expand is also temporarily selected when the screen is touched
inside or near the graticule. The Gain readout in the upper right corner of the
display indicates the current Gain setting with a multiplier (x) and in dB.
The default Vector Gain is x1.000 (0.000 dB), and can be compressed or
expanded from x0.250 (–12.195 dB) to x50.000 (34.055 dB) in 0.023 dB
increments.
Display and Graticule Intensity
Display and graticule intensity adjustments are also made with the control knob.
While the Display button is held in, the control knob varies the intensity of the
vector, menu information, and any other text on the display not associated with
the graticule. While the Graticule button is held in, the control knob varies only
the intensity of the graticule.
Pressing the Menu button either displays the Vector menu or toggles it off (if it is
already displayed). The Vector Menu is shown in Figure 5-2.
V-Axis Switch (PAL only): inverts the vector around the V-axis for a line
with a –V-axis burst. It has no effect on lines with a +V-axis burst.
Display Select V (PAL only): toggles between display of lines with a
+V-axis, a –V-axis, or both axes (default).
Control Knob
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