Tektronix 305 DMM, Инструкция по эксплуатации

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tween the signals applied to the C H I and CH2 INPUT con­
nectors. This switching between channels occurs at the com­
pletion o f each sweep. This operating mode is useful when
viewing both input signals at sweep rates o f 1 millisecond/
division or faster.
CHOP iChopped): The dual-trace c rt display alternates
between the C H 1 and CH2 Input signals at a fixed rate of
about 50 kHz. This mode is useful when viewing input
signals at sweep rates o f 0.5 millisecond/'division or slower.
A D D : Crt display is the algebraic sum o f the signals
applied to the C H I (X) and CH2 (V> INPUT connectors
(CHI plus CH2). When the PULL: INVERT control is
pulled out. the CH2 input signal is inverted providing a
difference display o f signals applied to the CH 1 and CH2
INPUT connectors (CHI minus CH2).
HORIZONTAL SWEEP CONTROLS (FIGURE 7)
21. POSITIO N -Controls horizontal positioning o f the
c rt display, except in the X-Y mode o f operation when the
CHI (X) POSITION control provides horizontal positioning.
22. SEC/DIV-Selects the calibrated sweep rate o f the
sweep generator c ir c u it The C AL (Variable) control must
be in its CALibrated detent position fo r the indicated time
base sweep rate.
Figure 7. Location of horizontal deflaction system controls.
REV A SEP 1979 305 Operators
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