TB 9-4931-217-40
(a) GENERATOR OUTPUT +/OFF/- switch to OFF.
(b) MULTIPLIER switch to 100 X STANDARD.
(c) DEVIATION RANGE switch to +0.1 ppm.
(d) Resistance decade dials to 000099.9 (TEN) (00).
(2) Connect equipment as shown in figure 8.
Figure 8. Multiplier - equipment setup.
(3) Turn DEVIATION dial to cc (certified correction) for resistor standard no. 2.
NOTE
Certificate for resistor standard no. 2 will indicate true ohms
value. To compute Cstd, use formula and example below.
Cstd = Rstd - Rnom
Rnom
Rnom = nominal value 10 k of resistance standard.
EXAMPLE: Certificate value of resistance standard is 10,000.028 ohms.
Cstd = 10,000.028 - 10,000 X 106 = + 2.8 ppm
10,000
(4) Adjust DETECTOR ZERO control for a null indication on TI meter while
decreasing DETECTOR RANGE switch to 3 MICROVOLTS range.
(5) Position controls as listed in (a) through (c) below:
(a) DETECTOR RANGE switch to 1000 MICROVOLTS.
(b) FUNCTION switch to LEAD ADJ.
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