Specifications

Global Setup Menu Functions
VTM Series Installation and Operation Handbook
4-32
order to display an NTSC signal without 7.5 IRE setup. The NTSC PEDESTAL
default position is ON (7.5 IRE).
PAL Waveform Scale
The PAL Waveform scale menu is used to select the unit of measurement for the PAL
Waveform. The selections are Volts or Units. The default selection for the PAL
Waveform menu is UNITS.
DC Restore (Analog Option Required)
DC Restore is used to have the voltage supplied to the analog signal in order to
maintain a DC level on the waveform. The blanking level is offset and shifts due to the
presence or absence of burst: 1 IRE unit or less. The DC Restore selections are Off,
Fast, and Slow.
• Off = DC offset appears.
• Slow = Hum still viewed in the signal.
• Fast = Fully restores the signal.
Waveform Intensity
The Waveform Intensity is used to raise or lower the brightness of the displayed
waveform.
Waveform Contrast
Waveform Contrast is used to adjust the overall difference between the lightest and
darkest colors of the waveform. The range of contrast is 25% to 200%. NORMAL is
the default contrast setting.
Persistence
Persistence is used to determine how long a data point (pixel) in the waveform remains
on the display. The ranges of Persistence are NORMAL, 1 TO 6, & INFINITE.
NORMAL is the default setting.
Attack
Attack is the initial intensity that the data point (pixel) appears in the display. The
range of attack is LOW (the lowest intensity), 2 to 6, and MAX (the greatest intensity).
LOW is the default intensity.
Error Highlighting
Error highlighting changes color of the portion of the waveform that exceeds the alarm
settings. OFF is the default. The highlighting is dependent upon the format and gamut
settings selected. The following are rules to consider:
• Composite format with Flat filter follows the alarm settings for Gamut Peak upper
and lower. It follows the threshold settings for the alarm, even when it is not
enabled.