TB 9-6625-2183-24
18. Resistance
a. Performance Check
(1) Press FUNCTION K
pushbutton.
(2) Connect resistance standard no. 1 to DMM INPUT LO and HI terminals.
(3) Adjust resistance standard no. 1 until DMM indicates 1000 k . If resistance
standard no. 1 does not indicate between 991 and 1009 k , perform b below.
(4) Repeat the technique of (3) above for DMM indications listed in table 9.
Resistance standard will indicate within settings listed in table 9.
Table 9. Resistance Check
Test instrument
Resistance standard indications
DMM indications
(k )
Min
Max
0.000
0.0
0.003
0.010
0.007
0.013
1.900
1.886
1.914
19.00
18.86
19.14
190.0
188.6
191.4
19001
1886
1914
Connect both resistance standard no. 1 and resistance standard no. 2 in series.
1
b. Adjustments. Set resistance standard no. 1 for 1000 k
and adjust R825 (fig. 3) for
DMM indication of 1000 (R).
19. Power Supply
a. Performance Check
NOTE
Do not perform power supply check if all other parameters are
within tolerance.
(1) Connect multimeter to +3 V test point (fig. 1) and chassis ground. If multimeter
does not indicate within 2.98 to 3.02 V, perform b below.
(2) Remove TI from ac source and connect dc power supply and multimeter to dc
input jacks on TI observing polarity.
(3) Adjust dc power supply to +9 V as indicated on multimeter. Press SCOPE
POWER pushbutton to ON.
(4) Adjust INTENSITY control for a trace of moderate intensity.
(5) Slowly lower output voltage of dc power supply until TI trace disappears.
Multimeter will indicated less than 7.7 V and ON (FLASHES WHEN LOW) light will flash.
b. Adjustments. Adjust R1084 (fig. 4) for 3.00 V (R).
20. Final Procedure
a. Deenergize and disconnect all equipment and reinstall protective cover on TI.
b. Annotate and affix DA label/form in accordance with TB 750-25.