Tektronix WFM 601i, User Manual

Page: 68 / 135

Functional Overview
2–16
WFM 601i Serial Component Monitor
This menu provides three selections: FLAT (unfiltered), LPASS (1 MHz low
pass filter), and the DIFF (differentiated steps filter). Turning off the FILTER
returns the monitor to the unfiltered (FLAT) setting. If either the LPASS or DIFF
filter is selected when the menu is turned off, the selected filter will be turned on
again when the FILTER menu is reselected.
Pressing CLEAR MENU turns off the filter selection readout.
The Cursor menu allows the operator to choose Voltage Cursors, Time Cursors,
Markers, or both Voltage and Time Cursors. With Voltage and Time cursors the
three controls below the CRT are assigned to control cursor 1, cursor 2, and
cursor tracking. The difference in the settings of cursor 1 and cursor 2, when
voltage or time is selected is reported with CRT readout as
D
V or
D
T. In the
both mode (V+T) a CONTROL selection allows the three controls to be used
with either the voltage or time cursors.
Markers operate in the vertical direction only. There are three markers identified
by the type of dashed lines:
Mark 1 is the longest dash.
Mark 2 is double dash.
Mark 3 is the shortest dash.
The markers have no readout associated with them.
CLEAR MENU removes the readout associated with the cursor selection, but the
cursors, difference readout (voltage or time) and control assignments remain
active and on screen. To restore the menu readout, push the CURSOR menu
button again. To turn off the cursors, push the CURSOR menu button when the
menu readout is displayed (two pushes of the CURSOR button, if the menu
readout is not displayed).
The Line Select menu provides a means of displaying a specified portion of the
signal. In the field rate sweeps one line out of field 1 or field 2, or the same line
in both fields can be displayed as a bright up of the display. A readout in the
upper left corner identifies the line. If 15H is selected the intensified portion of
the sweep increases in size and the read out now gives a range of lines (Field
plus starting and ending line).
In the line rate sweeps the display will be one or two lines long and will display
the selected line first. In 15H mode the display will consist of 15 lines overlaid.
Again the readout will be a range of lines.
The NEXT FIELD selection comes up when 1 OF 2 FIELD is selected and
allows the operator to toggle between fields 1 and 2.
Filter Menu
Cursor Menu
Line Select Menu