(9)
&
(2 1)VARIABLE
Fine adjustment of sensitivity with a factor of 2112.5 of the indicated value. The sensitivity is calibrated to specific
value in the CAL position. When this knob is pulled out (x5 MAG state), it will multiply 5 by the amplifier sensitivity.
(13)
&
(17)CHl
&
CH2 DC BAL.
The knobs are used for adjusting the attenuator balance. See page 20 DC BAL adjustments for details.
(I
I)&(]
9)
*
'
POSITION
Vertical positioning control of trace or spot.
(I4)VERT MODE Select operation modes of CH 1 and CH 2 amplifiers.
CH
I
Operate the oscilloscope as a single-channel instrument by selecting CHI alone.
CH
2
Operate the oscilloscope as a single-channel instrument by selecting CH2 alone.
DUAL
Operate the oscilloscope as a dual-channel instrument by selecting CHI and CH2.
ADD
The oscilloscope displays the algebraic sum (CHI
+
CH2) or subtraction (CHI
-
CH2) of the two signals
(the subtraction function effects only when push in CH2 INV(16) button).
(12)ALTICHOP
When this switch is released in the dual-trace mode, the CHI and CH2 inputs are alternately displayed (normally used at
faster sweep speeds).
When this switch is depressed in the dual-trace mode, the CHI and CH2 inputs are chopped and displayed
simultaneously. (normally used at slower sweep speeds).
(1 6)CH2 INV
When press CH2 MV button, it will inverts the CH2 input signal in CH2 and in ADD MODE, the CH2 trigger signal
pickoff is also inverted.
(23)SOURCE
Select the internal triggering source signal, and the EXT TRIG
IN
input signal.
CH
1
Press key DUAL or ADD of VERT MODE
(14),
select CHI to get internal triggering source signal
CH
2
Press key DUAL or ADD of VERT MODE (14), select CH2 to get internal triggering source signal
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