Tektronix WFM 601i, Руководство пользователя

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Functional Overview
Rev May 1994
WFM 601i Serial Component Monitor
2–11
In Line Sweep mode, the OVERLAY eye mode is calibrated at 1ns/div and the
10-EYE mode is calibrated at 3 ns/div. Pressing the MAG button gives a
calibrated 0.5 ns/div display for either OVERLAY or 10-EYE. The proper
deflection factor, e.g. 1 ns/DIV, 3ns/DIV, or 0.5 ns/DIV, appears as a readout in
the upper right corner of the screen.
In Field Sweep mode the eye signal is swept at a 1 field rate. Normal 1 field mag
is available. The deflection factor readout changes to “FIELD” in this mode.
The EYE pattern mode vertical position is independent from other vertical
position settings in the instrument. The position value is saved when the mode is
exited, and recalled when either EYE or EQ EYE is re-entered. It is adjusted
with the Vert Pos control.
The EYE pattern horizontal position is shared with the Waveform/Parade
horizontal position settings. It is adjusted with the Horiz Pos control.
Both amplitude and time cursors are available via the CURSOR menu.
The EYE PATTERN displays can be “windowed” around specific segments of
the video frame by using the line selector. Both 1H and 15H modes are available.
Serial Readout Screens
The WFM 601i has two readout screens that display information about the serial
signal. The STATUS screen provides basic information about the signal, such as
signal presence, line rate, Audio and Anc Data presence, and error rate. The
FORMAT screen displays the results of several data format checks. The readout
screens are activated by pushing the SERIAL button. The STATUS and
FORMAT screens are toggled via the DISPLAY soft key.
The basic STATUS screen is divided into three parts; see Figure 2-5. The upper
third of the screen provides general information on the content of the serial
signal. This particular screen shows that a 525-line rate signal, with 10 active
bits is present. One or more format errors have been detected, and ancillary data
other than EDH and embedded audio is present. Also, 8 channels of embedded
audio have been detected.
Horizontal Gain
Display Position
Cursors
Line Select
STATUS Screen