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77 Series III

Service Manual

3-10

Table 3-4. Resistance Test

Step Input Resistance Display Reading

1 short 0.0 to 0.3Ω

Decades of 1:

2 100Ω 99.2 to 100.8Ω (plus 0 reading)

31kΩ 994 to 1006 Ω

4 10 kΩ 9.94 to 10.06 kΩ

5 100 kΩ 99.4 to 100.6 kΩ

61 MΩ .994 to 1.006 MΩ

7 10 MΩ 9.79 to 10.21 MΩ

Decades of 1.9:

2 190Ω 188.7 to 191.3Ω (plus 0 reading)

3 1.9 kΩ 1889 to 1911 Ω

4 19 kΩ 18.89 to 19.11 kΩ

5 190 kΩ 188.9 to 191.1 kΩ

6 1.9 MΩ 1.889 to 1.9111 MΩ

7 19 MΩ 18.61 to 19.39 MΩ

Decades of 2.7:

2 270Ω 268.3 to 271.7Ω (plus 0 reading)

3 2.7 kΩ 2685 to 2715Ω

4 27 kΩ 26.85 to 27.15 kΩ

5 270 kΩ 268.5 to 271.5 kΩ

6 2.7 MΩ 2.685 to 2.715 MΩ

7 27 MΩ 26.45 to 27.55 MΩ

3-11. DC mA Test

1. Set the output of the DC Current Calibrator to zero, and connect it to

the 300mA and COM input terminals of the UUT.

2. Set the DC Current Calibrator to the output shown in Table 3-5, and

verify that the UUT display reading is within the limits shown.

1 2 ... 30 31 32 33 34 35 36 37 38 39 40 ... 58 59

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