TB 9-6625-2059-24
(6) Configure oscilloscope calibrator for level sine output.
(7) Set DEV-VERT V/DIV outer switch to .1.
(8) Adjust oscilloscope calibrator frequency to 50 kHz and amplitude for 5 divisions
of vertical deflection on TI display.
(9) Increase oscilloscope calibrator frequency to 1 MHz. If the displayed amplitude
is less than 3.5 major divisions, perform b (2) below.
b. Adjustments
(1) Adjust HORIZ GAIN A4A4R57 (fig. 1) for 1 marker per major division.
(2) Adjust A4A4C1 (fig. 1) for displayed amplitude greater than 3.5 major divisions.
13. Oscilloscope Gain
a. Performance Check
(1) Set oscilloscope calibrator output to off and remove 50 Ω termination. Reconnect
to TI SCOPE IN.
(2) Set DEV-VERT V/DIV outer switch to 1, SWEEP outer control to 1 mS and
inner control to CAL (detent).
(3) Configure oscilloscope calibrator for a voltage function, 1 kHz, 5 V output.
(4) Adjust oscilloscope calibrator edit knob control for 5 divisions of vertical
deflection on TI oscilloscope. If oscilloscope calibrator error display readout does not
indicate within 10%, perform b below.
(5) Repeat technique of (3) and (4) above at switch settings listed in table 14. If
error display readout does not indicate within 10%, perform b below while adjusting for
best in-tolerance condition on all ranges.
Table 14. Vertical Accuracy.
Test instrument
Oscilloscope volts switch settings
DEV-VERT V/DIV switch settings (V)
0.01
50
mV
0.1
0.5
V
10
50
V
b. Adjustments
(1) Adjust oscilloscope calibrator edit knob control until error display readout
indicates 0.00.
(2) Adjust VERT GAIN A4A4R7 (fig. 1) until TI oscilloscope indicates 5 divisions of
vertical deflection.
