754_____cmeng0000.pdf - 第29页

Documenting Process Calibrator Performance Verification Tests 21 Table 11. Resistance Source Verification Poin ts UUT Range UUT Output Minimum 1-Yea r Maximum 1-Yea r Minimum 2-Yea r Maximum 2-Yea r 10.000 Ω 0.1 Ω 0.090 …

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Table 10. Simulate Transmitter Verification Points
UUT Range UUT Output
Minimum
1-Year
Maximum
1-Year
Minimum
2-Year
Maximum
2-Year
22.000 mA 4 3.99220 4.00780 3.99140 4.00860
22.000 mA 21 20.98880 21.01120 20.98460 21.01540
Resistance Source Function
To verify the resistance source function:
1. Connect the UUT to the 8508A as shown in Figure 8. Use a four-wire connection
transitioning to two wires at the UUT.
2. Set the UUT to the resistance source function at 0.1 Ω.
3. On the 8508A, select four-wire ohms measurement and up-range to the 200 Ω
range. Use the 200 Ω range for the first five tests points, and autorange
thereafter. The low range of the 8508A supplies too much current into the UUT.
4. See if the value shown on the 8508A is in the range shown in Table 11.
5. Continue through the test points. See if the value shown on the UUT is in the
range shown in the applicable column of Table 11.
6. When you complete the test, push on the UUT two times to turn off the
source function. This conserves battery life.
Fluke 75X
Fluke 8508A
gso10.eps
Figure 8. Resistance Source Verification Connections
Documenting Process Calibrator
Performance Verification Tests
21
Table 11. Resistance Source Verification Points
UUT Range UUT Output
Minimum
1-Yea
r
Maximum
1-Yea
r
Minimum
2-Yea
r
Maximum
2-Yea
r
10.000 Ω 0.1 Ω 0.0900 0.1100 0.0850 0.1150
10.000 Ω 1 Ω 0.9899 1.0101 0.9849 1.0152
10.000 Ω 10 Ω 9.9890 10.0110 9.9835 10.0165
100.00 Ω 20 Ω 19.978 20.022 19.967 20.033
100.00 Ω 100 Ω 99.970 100.030 99.955 100.045
1000.0 Ω 200 Ω 199.76 200.24 199.64 200.36
1000.0 Ω 1000 Ω 999.60 1000.40 999.40 1000.60
10.000 kΩ 2 kΩ 1.9966 2.0034 1.9944 2.0056
10.000 kΩ 10 kΩ 9.9950 10.0050 9.9920 10.0080
Frequency Source
To verify the frequency source function:
1. Connect the UUT to the Tektronix FCA3000 Counter as shown in Figure 9.
2. Set the UUT to source, frequency, 1.000 Vpp, square wave, at 5 Hz.
3. See if the value shown on the Tektronix FCA3000 is in the range shown in the
applicable column in Table 11
4. Use the Fluke 123 to examine the wave forms. For the square wave, a positive
square wave, with a 50 % duty-cycle (±5 %), and 1.0 V peak amplitude. See that
the amplitude is correct for the applied signal. For the sine wave, make sure you
have the correct frequency, waveform, and amplitude.
5. Continue through the test points. See if the value shown on the UUT is in the
range shown in the applicable column of Table 12.
6. When you complete the test, push on the UUT two times to turn off the
source function. This conserves battery life.
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TEKTRONIX FCA3000 Counter
Fluke 75x
Fluke 123
Use Channel A
BNC Input
gso11.eps
Figure 9. Frequency Source Verification Connections
Table 12. Frequency Source Verification Points
UUT Range Frequency @ 1 Vpp
Minimum
Fre
q
uenc
y
Maximum
Fre
q
uenc
10.99 Hz 5 Hz Sine 4.99 Hz 5.01 Hz
1099.9 Hz 1 kHz Sine 999.9 Hz 1000.1 Hz
21.999 kHz 10 kHz Sine 9.998 kHz 10.002 kHz
50 kHz 49 kHz Sine 48.995 kHz 49.005 kHz
10.99 Hz 5 Hz Square 4.99 Hz 5.01 Hz
1099.9 Hz 1 kHz Square 999.9 Hz 1000.1 Hz
UUT Range Frequency @ 7.5 Vpp Minimum Frequency Maximum Frequency
109.99 Hz 50 Hz Square 49.9 Hz 50.1 Hz