TB 9-6625-2293-24
(14) Push up and release TRIGGER COUPLING switch.
(15) Adjust CH 2 VERTICAL POSITION control until CH 1 input coupling 1 M Ω DC
indicator remains illuminated, then push up and release TRIGGER COUPLING switch.
(16) Display readout will indicate MOVE SW, CENTER CH 2 POS step 122, 500
mV, 500 mV and BWL.
(18) Push up and release TRIGGER COUPLING switch.
(19) Adjust CH 2 VERTICAL POSITION control until CH 1 input coupling 1 M Ω DC
indicator remains illuminated, then push up and release TRIGGER COUPLING switch.
(20) Display readout will indicate first CAL 02 step number listed in table 16, (123, 124).
(21) For each step number listed in table 16 apply corresponding calibration
generator output, then push up and release TRIGGER COUPLING switch.
Table 16. Vertical Attenuator Check
Test instrument
CAL 02
Oscilloscope calibrator
Step numbers
output settings
123,124 1
0.5
V
125
0.2
V
126
0.1
V
127
50 mV
128
20 mV
129
1V
130
10 V
1When
step 123 is performed, step 124 is also
automatically done. No indication of step 124 will be
shown unless a LIMIT error is encountered.
(22) After step 130 is completed display readout will indicate MOVE SW, CENTER
CH 2 POS, step 131, 10 V, [arrow down] 10 V, and BWL.
(23) Push up and release TRIGGER COUPLING switch.
(24) Adjust CH 2 VERTICAL POSITION control until CH 1 input coupling 1 M Ω DC
indicator remains illuminated, then push up and release TRIGGER COUPLING switch.
The TI will automatically increment through steps 132 to 142.
(25) Display readout will indicate MOVE SW, CENTER CH 1 POS step 142, 50 mV
and BWL.
(26) Move connection from CH 2 to CH 1 and set oscilloscope calibrator for a 50 mV
1 kHz output, then push up and release TRIGGER COUPLING switch.
(27) Adjust CH 1 VERTICAL POSITION control until CH 1 input coupling 1 M Ω DC
indicator remains illuminated, then push up and release TRIGGER COUPLING switch.
Wait approximately 10 seconds for automatic calibration of the ΔV cursors.
(28) Display readout will indicate VERTICAL CENTER and GAIN.
(29) Adjust VERTICAL CENTERING R639 (fig. 1) to center cursors on the 0 percent
and 100 percent dotted graticule lines.
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