TB 9-4933-220-50
Table 5. DC Volts
Test instrument
DC voltage standard
indication (VDC)
Meter switch
VOLTS meter
position
indication (V)
Min
Max
MEDIUM
10
9.5
10.5
MEDIUM
3
7.5
8.5
MEDIUM
6
5.5
6.5
MEDIUM
4
3.5
4.5
MEDIUM
2
1.5
2.5
COARSE
30
28.5
31.5
1 If not within limits, perform 8b (3) and (4) below.
2 If not within limits, perform 8b (5) and (6) below.
(6) Reverse leads at DC voltage standard and
repeat (1) through (5) above.
(5) Adjust DC voltage standard output to 30.0
volts.
b. Adjustments.
(6) Adjust R8
(fig 2) until TI
VOLTS meter
NOTE
indicates 30 volts (R).
Adjustments are not contained on all
9. Final Procedure
TI models.
a. De-energize and disconnect all equipment.
(1) Adjust DC voltage standard output to 1.0
volts.
b. Replace TI within protective cover.
(2) Adjust R11 (fig 1 or
2) until TI
VOLTS
c. In accordance with TM 38-750, annotate and
meter indicates 1 volt (R).
the TI cannot be adjusted within tolerance, annotate and
(3) Adjust DC voltage standard output to 10.0
affix DA Form 2417 (Unserviceable or Limited Use).
volts.
(4) Adjust R7
(fig 2) until TI
volts meter
indicates 10 volts (R)
8