TB 9-6625-1980-24
Table 4. Ladder Adjustments
Test instrument
Nominal Value
Adjustments (fig. 2)
decade dial settings
(V dc)
(R)
R61
40.00000
40.000000
80.00000
80.000000
R4
20.00000
20.000000
R8
10.00000
10.000000
R10
0X.00000
10.000000
R2
1For
ladder No. 1 only, adjust R18 100V CAL (fig.2) for this setting (R).
WARNING
Assure POWER STDBY/RESET pushbutton is pressed when
removing or replacing assemblies. Press POWER OPR
pushbutton to perform adjustments.
(12) Remove assemblies A4A10 (ladder No. 1) and A4A11 (ladder No. 2) (fig. 2).
(13) Install assembly A4A11 in the A4A10 position and install assembly A4A10 in
the A4A11 position.
(14) Perform adjustments on assembly A4A11, using technique of (11) above and
values listed in table 4.
(15) Remove assemblies A4A10 and A4A11 and install assembly A4A11 in its
original position.
(16) Remove assembly A4A12 (fig. 2) and install in the A4A10 position.
(17) Install assembly A4A10 in the A4A12 position, and perform adjustments on
assembly A4A12, using technique of (11) above and values listed in table 4.
(18) Return assemblies A4A12 and A4A10 to their original positions.
(19) Set TI decade dials to 10.00000.
(20) Record multimeter indication within 2 V.
(21) Set TI decade dials to 0X.00000.
(22) Readjust R2 (ladder No. 1) (fig. 2) for multimeter indication of same value as
recorded in (20) above.
(23) Press POWER STDBY/RESET pushbutton.
(24) Position controls as listed in (a) through (c) below:
(a) MODE VOLTS and 1-10 pushbuttons pressed.
(b) Decade dials to 10.000000.
(c) POWER OPR pushbutton pressed.
(25) Adjust R15 10 V CAL (fig. 2) for 10.000000 V indication on multimeter (R).
(26) Set TI decade dials to indicate 100.00000.
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