Controls, Connectors,
and
Indicators
Horizontal
Refer to Figure 5-5 for the location
of
items 27 through 36.
X10
i31J
MAG
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o
i~~~Kt~
D·
6014-06
Figure 5·5. Horizontal and delta measurement controls.
@ SEC/DIY
Switch and
Indicators
A
SEC/DIY
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
1 0 ns/div
in
the 2455A and
2445A).
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.
2465A/2455A/2445A Operators
5-11
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