Keysight Technologies N4000A SNS Series, Operating And Service Manual

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Keysight N4000/1/2A Operating and Service Manual 11
List of Figures
Figure 1-1 Keysight SNS series smart noise source . . . . . . . . . . .16
Figure 3-1 Characteristic SWR at 23 °C . . . . . . . . . . . . . . . . . . . .23
Figure 3-2 Example ENR uncertainty versus frequency for the
N4000A model . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Figure 3-3 Example ENR uncertainty versus frequency for the
N4001A and N4002A models . . . . . . . . . . . . . . . . .25
Figure 4-1 Typical noise figure measurement test setup . . . . . . .30
Figure 4-2 Operator’s check test setup for data communication .32
Figure 4-3 A typical cleared ENR table . . . . . . . . . . . . . . . . . . . . .33
Figure 4-4 A typical ENR table after data entry . . . . . . . . . . . . . .34
Figure 4-5 Operator’s check test setup for T
cold
communication .35
Figure 4-6 Typical user value . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
Figure 4-7 Typical user value after uploading SNS value . . . . . . .36
Figure 4-8 Operator’s check for T
cold
upload from SNS . . . . . . . .37
Figure 4-9 SNS connected to NFA graphic . . . . . . . . . . . . . . . . . .38
Figure 4-10 Typical example of power reading with Noise Source On
39
Figure 4-11 Typical example of power reading with Noise Source Off
40
Figure 4-12 Illustrated parts breakdown . . . . . . . . . . . . . . . . . . . . .44
Figure 4-13 SNS series smart noise source block diagram . . . . . .45
Figure 4-14 Removing the smart noise source plastic shell . . . . . .47
Figure A-1 Precision 7 mm connector . . . . . . . . . . . . . . . . . . . . . .62
Figure A-2 Precision 3.5 mm connectors . . . . . . . . . . . . . . . . . . . .63
Figure A-3 SMA connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63
Figure A-4 Cleaning interior surfaces . . . . . . . . . . . . . . . . . . . . . .66
Figure A-5 Type-N connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . .69
Figure A-6 Using the connector gage . . . . . . . . . . . . . . . . . . . . . .72