TB 9-6625-2240-24
9. Main Sweep Timing
NOTE
For oscilloscopes with multimeters attached, refer
to
calibration section of multimeter manual at this point.
a. Performance Check
(1) Press VERT MODE CH1 pushbutton and set VOLTS/DIV switch to .5 V.
(2) Perform steps (a) through (d) below:
(a) Press oscilloscope calibrator MARKER pushbutton to illuminate green LED
and ensure oscilloscope calibrator output is set to 1.000 ms.
(b) Connect oscilloscope calibrator CHAN 1 to TI CH1 through 50 Ω termination.
(c) Press oscilloscope calibrator OPR/STBY pushbutton for OPR indication on
oscilloscope calibrator display.
(d) Ensure TI TIME/DIV is set to 1 ms.
(3) Rotate POSITION knob to align 1st time marker to 1st vertical graticule line on
TI crt.
(4) Rotate oscilloscope calibrator knob located below EDIT FIELD pushbutton for 1
time marker per division on crt. Oscilloscope calibrator err display will indicate within
limits specified in table 6.
(5) Repeat technique of (3) and (4) above for TI settings and oscilloscope calibrator
MARKER outputs listed in table 6. Perform TI adjustments for each TIME/DIV switch
position listed in table 6 as needed.
Table 6. Timing Accuracy
Test instrument
Oscilloscope
Oscilloscope
Test instrument
X10 MAG
calibrator err
calibrator
Adjustments
TIME/DIV
pushbutton
MARKER
display limits
(R)
switch settings
(%)
settings
output settings
b1
1
ms
1
ms
Out
1
.1 ms
1
ms
In
2
s
s
Out
1
C1064 (fig. 2)
10
10
s
s
In
2
1
10
.1 s
.1 s
Out
1
C1009 (fig. 3)
.1 s
10
ns
In
2
(6) Perform steps (a) through (d) below:
(a) Set TI A COUPLING switch to LF REJ.
(b) Set TI A SOURCE switch to CH1.
(c) Press TI X10 MAG pushbutton (in).
(d) Press TRIG MODE NORM pushbutton (in).