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The Keysight 85521A is a Type-3.5mm female 50Ω mechanical calibration kit covering DC to 26.5 GHz. The kit provides the Open, Short, Load, and Through standards required to perform a full vector network analyzer calibration at the 3.5mm female interface, with characterization data published for each standard so the kit can be defined within a VNA's calibration kit definition.
Calibration kits of this type are used to remove systematic measurement errors from vector network analyzer measurements at the test port reference plane. Before characterizing an RF component or device under test, an engineer connects each standard from the kit to the analyzer's test ports and runs the analyzer's calibration routine, which uses the published electrical characteristics of the standards to compute and apply error correction. The 85521A's DC-to-26.5 GHz coverage aligns it with VNA measurement applications across cellular, WiFi, radar S/C/X/K-band, and general RF component characterization.
Keysight Technologies was spun off from Agilent Technologies in 2014 to become the dedicated electronic measurement company carrying forward the test and measurement legacy that originated with Hewlett-Packard's instrument business. Calibration kits and VNA accessories carrying the Keysight brand are the direct continuation of the HP and Agilent calibration kit product lines that preceded them.
| Standard | Parameter | Specification |
|---|---|---|
| Through (female-female) | Electrical Delay | 115.881 ps |
| Through (female-female) | Return Loss (typical), DC to 5 GHz | ≥ 34 dB |
| Through (female-female) | Return Loss (typical), 5 to 26.5 GHz | ≥ 30 dB |
| Through (female-female) | Insertion Loss (typical), 0 to 26.5 GHz | ≤ 0.035 dB sqrt (f/GHz) |
| Open (female) | Offset Delay | 31.832 ps |
| Open (female) | C0 (E-15 F) | 3.695 |
| Open (female) | C1 (E-27 F/Hz) | -625.6 |
| Open (female) | C2 (E-36 F/Hz²) | -2.2 |
| Open (female) | C3 (E-45 F/Hz³) | 0.104 |
| Open (female) | Deviation from Nominal Phase (spec), DC to 5 GHz | ≤ 1.5° |
| Open (female) | Deviation from Nominal Phase (spec), 5 to 15 GHz | ≤ 3.0° |
| Open (female) | Deviation from Nominal Phase (spec), 15 to 26.5 GHz | ≤ 4.5° |
| Short (female) | Offset Delay | 30.581 ps |
| Short (female) | L0 (E-12 H) | -8.424 |
| Short (female) | L1 (E-24 H/Hz) | 2912 |
| Short (female) | L2 (E-33 H/Hz²) | -217 |
| Short (female) | L3 (E-42 H/Hz³) | 4.51 |
| Short (female) | Deviation from Nominal Phase (spec), DC to 5 GHz | ≤ 1.0° |
| Short (female) | Deviation from Nominal Phase (spec), 5 to 15 GHz | ≤ 2.5° |
| Short (female) | Deviation from Nominal Phase (spec), 15 to 26.5 GHz | ≤ 4.0° |
| Load (female) | DC-Resistance | 50 Ω ± 0.5 Ω |
| Load (female) | Return Loss (spec), DC to 5 GHz | ≥ 42 dB |
| Load (female) | Return Loss (spec), 5 to 15 GHz | ≥ 36 dB |
| Load (female) | Return Loss (spec), 15 to 26.5 GHz | ≥ 32 dB |
| Load (female) | Max. Power | 0.25 W |
| Operating Temperature Range | Environmental | +18 °C to +28 °C |
| Storage Temperature Range | Environmental | -40 °C to +70 °C (in line with EN 60068-2-1 and EN 60068-2-2) |
| Recommended Inspection Interval | Service | 1 year |
Please review the Manufacturer's Data Sheet to verify published specifications. Feedback on this webpage is always welcome — please reach out to your Test Architect at any time for questions or concerns. Thank you, we truly appreciate you being our customer.
Model No
Keysight
Condition
New
Manufacturer
Keysight Technologies
30+ Years in Business
Secure Payments
Sell Test Equipments
Knowledgeable Staff
On-site Lab
30+ Years in Business
Secure Payments
Sell Test Equipments
Knowledgeable Staff
On-site Lab
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