Functional Overview
2-4
WFM 1125 Option 0A/0B/0C/0D User Manual
Table 2-1: Front panel functions (cont.)
Front panel items DescriptionsItem name
GAIN ON button Selects the vertical magnification from the bezel menu. If the gain
is enlarged, the LED lights. The bezel menu is dismissed when
you press this button again. For the Waveform display, the scale
value varies according to the magnification; for the Vector display,
the current magnification setting is shown at the bottom right
corner of the display. Note that, for the Lightning display, the gain
setting is not available. You have the following options:
X1 : Selects the 1 magnification gain.
X5 : Selects the 5 magnification gain.
X10 : Selects the 10 magnification gain.
CENTER/0mV : Selects the center with respect to which the
scaling to change the gain works. For the Vector or Status
display, this item is not selectable. Selects the vertical
magnification registration or pivot point as either the display
center or 0 mV setting. Those portions of the waveform near the
0 mV graticule line will remain on screen when X5 or X10
magnification is selected.
HORIZONTAL SWEEP
button
Selects sweep rate from the menu. When CH1, CH2, or CH3 is
selected in the DISPLAY, pressing this button displays the bezel
menu on the CRT to allow you to select 1 LINE, 2 LINE, 1 FIELD,
or 2 FIELD
1
. When PARADE is selected in the DISPLAY,
pressing this button displays the bezel menu on the CRT to allow
you to select 3 LINE or 3 FIELD. This mode is disabled if
OVERLAY, BOWTIE, VECTOR, or STATUS is selected in the
DISPLAY.
MAG button Provides horizontal magnification of waveform signals. Use the H
POS knob to move left or right through the waveform.
LINE SEL ON button Displays only selected lines. Press the SELECT button to select
a field, or turn the SELECT knob to select a line number. The
number of lines currently selected is displayed on the screen. You
can select from all the lines including vertical blanking. This
function is disabled in field sweep rate mode.
CURSOR ON button Displays Voltage (V) cursors, Time (T) cursors, or both (V@T)
cursors. You can select a cursor type from the bezel menu. Use
the SELECT knob to move the cursor, and use the SELECT
button to change to the active cursor. Press the CHANGE V@T
bezel button to select and adjust the Voltage or the Time mode.
When you press the CURSOR button, menu readouts related to
the cursors will disappear, but the cursor, the cursor readouts,
and the feature to assign a function to the knob are still available.
Press CURSOR again to recall the menu readouts. Select OFF
from the bezel menu to terminate the cursor functions.
1
Option 0A or 240M/274M format mode of Option 0C or Interlace and Segment Frame modes of Option 0D only.