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214
Appendix B
Information for Replacing 4278A with 4288A
Functional Comparison and GPIB Command Correspondence
Measurement range
Functional comparison
The following table shows the allowable measurement ranges for the 4278A and the
4288A.
At the measurement frequency of 1 kHz, the 4288A provides almost perfect upward
compatibility with the 4278A. The measurement ranges that can be set for the 4278A,
except for the 100
µ
F range, can also be set for the 4288A. If you select only these
measurement ranges, the 4288A provides the same level of accuracy as the 4278A.
However, it is recommended that you select the most appropriate measurement range for
high-accuracy measurement.
At the measurement frequency of 1 MHz, the 4288A provides almost no compatibility with
the 4278A, so you cannot specify the same measurement ranges except for the 1 pF range.
Differences in usage of GPIB commands
Measurement frequency: 1 kHz
Measurement frequency: 1 MHz
4278A
4288A
4278A
4288A
Range
Output
resistance
Range
Output
resistance
Range
Output
resistance
Range
Output
resistance
100 pF
100
Ω
100 pF
20
Ω
1 pF
20
Ω
1 pF
20
Ω
220 pF
20
Ω
2 pF
20
Ω
470 pF
20
Ω
2.2 pF
20
Ω
1 nF
100
Ω
1 nF
20
Ω
4 pF
20
Ω
2.2 nF
20
Ω
4.7 pF
20
Ω
4.7 nF
20
Ω
8 pF
20
Ω
10 nF
100
Ω
10 nF
20
Ω
10 pF
20
Ω
22 nF
20
Ω
16 pF
20
Ω
47 nF
20
Ω
22 pF
20
Ω
100 nF
20
Ω
100 nF
20
Ω
32 pF
20
Ω
220 nF
1.2
Ω
47 pF
20
Ω
470 nF
1.2
Ω
64 pF
20
Ω
1
µ
F
1.2
Ω
1
µ
F
1.2
Ω
100 pF
20
Ω
2.2
µ
F
1.2
Ω
128 pF
20
Ω
4.7
µ
F
1.2
Ω
220 pF
20
Ω
10
µ
F
1.2
Ω
10
µ
F
1.2
Ω
256 pF
20
Ω
470 pF
20
Ω
512 pF
20
Ω
100
µ
F
20
Ω
1 nF
20
Ω
1024 pF
20
Ω
4278A
4288A
Correspondence
between the
measurement
frequency and the
measurement range
Measurement range is set for both 1 kHz
and 1 MHz frequencies. Different setup
commands are provided for each allowable
measurement range at both 1 kHz and
1 MHz frequencies.
Measurement range is set for both 1 kHz
and 1 MHz frequencies. If a change in the
measurement frequency conflicts with the
measurement range setting, an acceptable
range is automatically selected.
Содержание 4288A
Страница 18: ...16 Chapter1 Making Effective Use of This Manual How To Use This Manual ...
Страница 102: ...100 Chapter8 Avoiding Mistakes Related to Work and Daily Checks Daily Checks executing the self test ...
Страница 212: ...210 AppendixA Manual Changes Manual Changes ...
Страница 248: ...246 AppendixB Information for Replacing 4278A with 4288A Comparison of Interfaces ...
Страница 258: ...256 AppendixC Status Reporting System Using the Status Reporting System ...
Страница 282: ...280 AppendixG 4268A vs 4288A GPIB Command Correspondence Table 4268A vs 4288A GPIB Command Correspondence Table ...
Страница 288: ...286 Index Index ...