4-9
g. Disconnect the test setup.
f. CHECK-That the voltage reading displayed is
within 1
%
of 6.00 Volts (5.94 to 6.06).
e. Precisely align one voltage cursor to the graticule
line three divisions above graticule center and the other
cursor to the line three divisions below graticule center.
d. Set MULT off and CH 1 on.
(59) CHECK-That the readout indicates between
23.80 and 26.20 V.
(58) Align the cursors to the top and bottom of the
displayed waveform as in subparts (6) through (8).
(57) Set CH 1 and CH 2 VOLTS/DIV back to 1 V
and MULT on (ADD will be turned off).
(56) CHECK-That the readout indicates between
9.72 and 10.28 V.
(55) Align the cursors to the top and bottom of the
displayed waveform as in subparts (6) through (8).
(54) Set CH 1 and CH 2 VOLT/DIV controls to 2 V.
Set CH 1 and CH 2 off and ADD on.
(53) Select VERTICAL MODE and set CH 1 on. Use
the CH 1 VERTICAL POSITION to superimpose the
CH 1 waveform exactly over the CH 2 waveform.
(52) Using the CH 2 VERTICAL POSITION control,
set the bottom of the CH 2 waveform 1.5 divisions
below graticule center.
(51) Remove the cable from CH 2 OR Y input and
connect the 5 V standard amplitude signal to CH 1 OR
X and CH 2 OR Y through a Dual-Input Coupler.
on.
(50) Select TRIGGER MODE and set AUTO LEVEL
(49) Repeat subparts (1) through (48)-skipping
(5)-to check the functions and accuracies for CH 2.
(48) Select VERTICAL MODE and set CH 2 on and
CH 1 off. Move the cable to CH 2 OR Y.
Performance Check and Functional Verification Procedure
2430 Service
(47) Return INVERT ON:OFFto OFF.
(46) Repeat subparts (6) through (9) to check
INVERT accuracy.
(45) Using the VERTICAL POSITION control, set
the bottom of the waveform 3 divisions below graticule
center.
(44) Select CH 1 COUPLING/INVERT and set
INVERT ON:OFFto ON.
(43) Press CAL. VERIFY-That the waveform has
returned to its original amplitude and that the
">"
symbol is no longer displayed.
(42) VERIFY-That the amplitude of the displayed
waveform increases when the menu button labeled
"T"
is pushed.
(41) CHECK-That the amplitude of the displayed
waveform is two divisions or less. VERIFY-That a
"> " symbol appears immediately left of the CH 1 scale
factor readout.
(40) Select CH 1 VARIABLE and press and hold
down the menu button labeled
"I"
until the displayed
waveform no longer decreases in amplitude.
(39) Set the CH 1 VOL TS/DIV control to 1 V and
the Calibration Generator output level to 5 V.
(38) Set HORIZONTAL MODE to A.
(37) Press the AlB TRIG button to set the A Trigger
System on (the A COUPLING menu will be displayed).
Set A COUPLING to DC on.
(36) Set the B COUPLING mode back to DC on.
(35) Repeat subparts (14) through (24), using
147 mV to 253 mV as the limits to check against in
subparts (15) and (22) and +47 mV to -47 mV as the
limits for subparts (17) and (24).
(34) Set the Calibration Generator STD AMPLI-
TUDE output level to 0.2 V.
(33) Set CH 1 VOL TS/DIV control to 50 mV.
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