Power Accuracy

The purpose of this test is to verify the power measurement accuracy of the U2000 Series USB Power Sensor.

Required Test Equipment

Instrument	Recommended product	Alternative product	U2000A, U2001A, U2004A	U2002A	U2000B, U2001B	U2000H, U2001H	U2002H
Spectrum Analyzers
Spectrum Analyzer	E4448A Opt 1DS	E4440A Opt 1DS or E4443A Opt 1DS or E4445A Opt 1DS or E4446A Opt 1DS	X	X	X	X	X
Signal Sources
Signal Generator	E8257D Opt 1E1 and 520	E8257D Opt 1E1 and (1EA or 1EU) and (532, 540, 550, or 567)	X	X	X	X	X
Power Supply for ZHL-1-2W-N Amplifier	E3632A	-	X	X
Power Supply for ZHL-100W-52 Amplifier	N5745A	-			X	X	X
Meter
Power Meter¹	N1914A	N1912A E4419B	X	X	X	X	X
Power Sensor ²	N8481A	8481A	X			X
Power Sensor²	N8485A	8485A		X			X
Power Sensor²	N8481H	8481H			X
Attenuators
Fixed Attenuator	8491A Opt 006	8491B Opt 006	X	X	X (2 required)	X (2 required)	X (2 required)
Fixed Attenuator	8491B Opt 010	8491A Opt 010	X	X	X
Miscellaneous Devices
Directional Bridge	86205A	-	X	X
Directional Coupler	Pulsa C4-P4-411N	-				X	X
Directional Coupler	Werlatone C7926-10	-			X
Amplifier	Mini Circuit ZHL-1-2W-N	-	X	X
Amplifier	Mini Circuit ZHL-100W-52	-			X	X	X
Filter	RLC Electronics BPF-750-50-10-5-N	0955-0306 and BNC (plug-m) to Type-N (f) 1250-1477 and BNC (Jack-f) to Type-N (m) 1250-1476 (Not for U200xB)	X	X	X	X	X
Adapters
2.4 mm (f) to Type-N (f) for source RF output connector type 2.4 mm (f)	11903B	-	X	X	X	X	X
3.5 mm (f) to Type-N (m)	1250-1744	-		X			X
3.5 mm (f) to Type-N (m)	08485-60005	-		X			X
Cables
Type-N (m to m) (3 cables required)	11500C	-	X	X	X	X	X
BNC Cable	10503A	-	X	X	X	X	X
Wire (from power supply to amplifier)	-	-	X	X	X	X	X

Table Footnotes:

The following notes apply to power meters:
- N1914A
  - N1914A power meters with serial number prefix prior to MY53040007 require Service Note N1914A-07 which fixes a power supply ground loop. The ground loop injects noise into the measurement circuits which can cause unstable measurements at low (–30 dBm) power levels.
  - Requires minimum firmware version A.01.15 or above to fix a power linearity accuracy issue.
- N1912A requires minimum firmware version A.05.10 or above to fix a power linearity accuracy issue.
Supported power sensor options:
- N8480 Series: STD or CFT
- 8480 Series: Standard Option
- N8485A: STD or CFT and/or 033
- 8485A: Standard Option or 033

Test Setup Illustrations

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