Tektronix 2337, Instruction Manual

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7 7 !
7 7
1 1 1
PO S ITIV E LEVE L
1
,i. .
1
1
■
:
__ __
90
___
N E G A T IV E O FFSET
1 ;
___
___
(A) C H A N N E L 1 S IG N A L
W ITH 3 D IV IS IO N S OF
PO S ITIV E DC LEVE L.
(B) C H A N N E L 2 DISPLAY
W IT H 3 D IV IS IO N S OF
N E G A T IV E OFFSET.
(C) R ES U LTA N T DISPLAY
4 6 5 /D M - 0 - 1
Figure 15. Algebraic addition.
Common-Mode Rejection
The ADD mode can also be used to display signals that
contain undesirable frequency components. These undesir­
able components can be eliminated through common-mode
rejection. The precautions given under the preceding
"Algebraic A d d itio n " procedure should be observed.
EXAMPLE: The signal applied to the Channel 1 input
connector contains unwanted ac-input-power-source
frequency components (see Figure 16A). To remove the
undesired components, use the following procedure:
1. Preset instrument controls and obtain a Normal
Sweep Display.
@
2337 Operators
45