Equipment Setup - TB-9-6625-2024-350014

TB 9-6625-2024-35

SECTION V

CALIBRATION PROCESS FOR VERTICAL AMPLIFIER AM-6565/U AND

TEKTRONIX TYPES 7A15A AND 7A15AN OPT 11

15. Equipment Setup

a. Remove left side panel from TI and oscilloscope.

b. Install TI into oscilloscope left vertical compartment and dual time base into

horizontal (right) compartment.

c. Position TI controls as listed in (1) through (5) below:

(1) POSITION control to midrange.

(2) POLARITY switch to +UP.

(3) MAG switch to X1.

(4) VOLTS/DIV switch to 10 mV and VARIABLE control fully cw (detent).

(5) AC/GND/DC switch to DC.

d. Press oscilloscope VERT MODE LEFT and TRIG SOURCE LEFT and TRIG

SOURCE VERT MODE pushbuttons.

e. Set dual time base TIME/DIV OR DLY TIME switches to 1 ms and CAL control

fully cw to detent.

f. Energize equipment and allow at least 15 minutes for warm-up.

g. Adjust POSITION control to center trace on oscilloscope center horizontal

graticule line.

h. Rotate VARIABLE control throughout its range. If oscilloscope display shifts

more than 0.5 major division, adjust R221 DC BAL (fig. 3). for minimum shift as

VARIABLE control is rotated throughout its range.

Figure 3. Test instrument - left view.