This test is performed only on analyzers with Option 123.
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This test is performed only on analyzers with Option 123. |
Frequency Response (or flatness) is defined as the amplitude deviation from the reference value at 50 MHz. The complete E444xA Frequency Response for instruments with Option 123 is measured with four different tests:
Frequency Response (Option 123) (this test)
The Frequency Response Below 300 kHz test is used to verify flatness
from 10 Hz to 300 kHz. The 300 kHz normalized error from the Frequency
Response 300 kHz to 3 GHz test is used as the reference point for
the Frequency Response Below 300 kHz test.
The Frequency Response Above 3 GHz test verifies flatness from 3.0 GHz up to 50 GHz, depending on your instrument frequency range.
This test verifies the displayed amplitude vs. frequency over the frequency range from 3.0 GHz to 50 GHz using the unpreselected path (Option 123). For each test frequency, the amplitude error is normalized to 50 MHz, and the result is called Frequency Response. Two sources, and two sets of power sensors are used to provide the needed frequency range.
The E444XA flatness corrections are located every 100 MHz for frequencies above 3 GHz.
Above 3 GHz the flatness specification widens out such that higher uncertainties can be tolerated, therefore a splitter calibration is not necessary.
Click here for troubleshooting.
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Test Equipment |
Model Number |
E4440A |
E4446A |
|---|---|---|---|
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Synthesized Sweeper |
PSG Models |
X |
X |
|
Power Meter |
N1914B |
X |
X |
|
Power Sensor |
N8485A |
X |
|
|
Power Sensor |
N8487A |
|
X |
|
Power Splitter |
11667B |
X |
|
|
Power Splitter |
11667C |
|
X |
|
3.5 mm Cable |
8120-4921 |
X |
|
|
BNC Cable |
8120-2582 |
X |
X |
|
2.4 mm Cable |
8120-6164 |
|
X |
|
Type-N (m) to 3.5 mm (m) adapter |
1250-1743 |
X |
|
|
Type-N (m) to 2.4 mm (f) adapter |
11903D |
|
X |
|
3.5 mm (f) to Type-N (m) |
08485-60005 |
X |
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2.4 mm (f) to Type-N (m) |
08487-60001 |
|
X |
