Controls,
Connectors,
and indicators
Horizontal
Refer to Figure 5-5 for the location of items 28 through 37.
Selects A-Sweep speeds, B-Sweep speeds, Delay Time
ranges, horizontal display mode, and CH 2 Delay
Matching mode. The SEC/DIV switch can be rotated
continuously in either direction, but further rotation has
no effect when either extreme setting has been reached.
The A SWP and B SWP indicators show which sweep
or sweeps are displayed.
When the A Sweep is displayed without the
B Sweep, SEC/DIV selects 25 calibrated A-Sweep
speeds from 500 ms/div to 5 ns/div in a 1-2-5
sequence (24 steps to 10 ns/div in the 2455B and
2445B). Full counterclockwise rotation of the
SEC/DIV switch selects the X-Y display feature. In
X-Y, the CH 1 OR X input drives the horizontal
deflection system.
When the B Sweep is displayed, SEC/DIV selects
B-Sweep speeds in 22 calibrated steps from
50 ms/div to 5 ns/div in a 1-2-5 sequence
(21
steps
to 10 ns/div in the 2455B and 2445B).
Horizontal Display Mode Selection (PULL-INTEN TURN-ALT
PUSH-B):
A When the SEC/DIV knob is in, the A Sweep is
displayed,
unless the B Sweep has been displayed
and the B Sec/Div setting remains faster than the A
Sec/Div setting. The exception is that Channel
1
is
displayed in the horizontal at the extreme
counterclockwise setting of SEC/DIV.
(3) SEC/DIV
Switch and
Indicators
A SEC/DIV
B SEC/DIV
5-12 2465B/2455B/2445B Operators