TB 9-6625-388-24
Figure 1. Ratio resistor check - equipment setup.
(7) Position TI controls as listed in (a) through (c) below:
(a) MULTIPLY BY switch to 1/1000.
(b) BA switch to EXT.
(c) 1000 ohm decade switch to 9 and all others to 0.
(8) Adjust decade resistor for 9 ohms.
(9) Adjust DC power supply for 20 volts.
(10) Operate GA SENS switches on TI while adjusting TI decade switches for null
indications on resistance measuring system. Record value.
(11) Adjust decade resistor for 0 ohms.
(12) Repeat (10) above.
(13) Subtract the value recorded in (12) above from the value recorded in (10) above.
The difference between this value divided by 1000 and the value recorded in (5) above will be
less than 0.024 ohm.
(14) Turn TI MULTIPLY BY switch to 1/100 and set TI decade switches to 9000.
(15) Adjust decade resistor for 90 ohms.
(16) Operate TI GA SENS switches while adjusting decade switches for null indication
on resistance measuring system. TI decade switches will indicate between 8986 and 9014.
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