User manual

Getting Started: Product Description
WFM 90 & WFM 91 User Manual
1–5
Vector, or Audio displays. The WIP window can be positioned to any
one of the four corners of the display. The Arrow Buttons retain their
default function for the display mode in the WIP window.
Line Select Mode
The Line Select mode enables the user to select any line of video for
viewing in either the Waveform or Vector display modes. The
desired line can be selected from either all video fields or from
alternating fields. With two-field sweep selected in the Waveform
display mode, the selected line is highlighted in the field display.
Time-Out Mode
When the Time-out mode is enabled, power is turned off to the
display backlight and/or the instrument when the front panel has not
been in use for a menu-selected length of time.
Amplitude Alarm Mode
The Amplitude Alarm mode provides automatic signal level
checking in the Waveform and Audio display modes. In the
Waveform display mode, the portion of the waveform exceeding the
100 IRE (1.0 V PAL) graticule line is highlighted. In the Audio
display mode, the portion of the waveform exceeding the selected
reference level is highlighted.
Preset Menu
The Preset menu allows the user to store the current instrument front
panel and menu settings for future use. In addition, there is a menu
selection which sets the front panel and menu settings back to a
factory-set default. These default settings are listed on page 3–7.
Instrument Readjustment
The WFM 90 and WFM 91 can be adjusted entirely from the front
panel after entering the Calibration menu. The instrument should
only be adjusted by qualified personnel. The service manual contains
the instructions for readjusting the instrument.