UXA — N9040B with options above 526
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N9030B PXA models with frequency options 544 or 550 and without bandwidth options B2X or B5X have the option to run the "classic" alternate adjustment using a PSG-D signal generator. These "classic" adjustments are run from the Utilities Test Plan. For more information, click here. The solution used on this topic page with the PNA-X network analyzer is the preferred solution for all N9030B PXA models with frequency options > 526. |
This adjustment will use two equipment setups: one using a function generator and another using a PNA-X network analyzer.
To generate corrections below 50 MHz, the traditional technique is used with a source (function generator), power splitter, and power sensor. The source-splitter-sensor is considered to be a calibrated source.
To generate corrections above 50 MHz, the PNA-X network analyzer is used as the calibrated source. A calibration must be performed on the PNA-X prior to running the adjustment (see below).
At each correction frequency, the calibrated source amplitude is adjusted to –10 dBm (Preamp off and Option EA3). Next, the flatness corrections are turned off, and amplitude error versus frequency is measured from 9 kHz to the end of Band Zero. The data is then normalized to the 50 MHz error to generate corrections relative to 50 MHz, and stored in the analyzer memory. If the instrument is outfitted with Electronic Attenuator (Option EA3), then corrections are generated for this path as well.
Click here for troubleshooting.
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Test Equipment |
Recommended Model Number |
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Function Generator |
33622A 1 |
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Network Analyzer2 |
N5247B |
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Power Meter |
N1914B |
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RF Power Sensor |
E9304A Option H20 |
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Power Splitter, 3.5 mm |
11667B |
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Cable, BNC (m) to BNC (m) |
8120-1840 |
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Cable, 2.4 mm (f) to 2.4 mm (m) |
8121-2065 (or equivalent) |
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Adapter, BNC (f) to 3.5 mm (m) |
1250-1200 |
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Adapter 2.4 mm (f) to 2.4 mm (f) |
11900B (or equivalent) |
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Adapter, 2.4 mm (f) to 3.5 mm (m)
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11901D |
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Adapter, Type-N (m) to 3.5 mm (m)
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1250-1743 |
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Adapter, Type-N (m) to 2.4 mm (m)
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11903A |
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Adapter, 2.4 mm (m) to 3.5 mm (f)
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11901C |
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The network analyzer used in this adjustment must be calibrated prior to running the adjustment. The calibration will need to be repeated once every three days or if the connectors or cables have been disturbed. If it's been within the three day time frame and the connectors and cables have not been disturbed, then the network analyzer calibration is not necessary and you may proceed with the adjustment.
For a list of required equipment and calibration instructions to perform the network analyzer calibration, refer to Network Analyzer Freq Sweep Calibration.
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In the following setups, cables are designated as solid lines and direct connections are designated as dashed lines. |
