Agilent
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The Agilent 11848 A Phase Noise Interface is a phase-noise interface for the 3048A system. The Agilent 11848 A Phase Noise Interface supports measurements of carriers from 5 MHz to 1.6 GHz. The Agilent 11848 A Phase Noise Interface with Option 201 extends the input to 18 GHz without the use of a downconverter.[1][2]
The 11848A includes an optional high-frequency phase detector that extends the interface input range to eighteen gigahertz without external down conversion by the system.[2]
Documented failure modes, common issues, and field considerations.
The service manual states that Agilent no longer sells or supports this product.
| Designation | Generation | Vintage | Changes | Source |
|---|---|---|---|---|
| 11848A with Option 201 | — | — | Adds a 1.2 to 18 GHz phase detector and extends the carrier-frequency range from 1.6 to 18 GHz. | hparchive.com[2] |
| 11848A Option 201 | — | — | Adds a 1.2 to 18 GHz phase detector and extends the input to the interface to 18 GHz without the use of a downconverter. | hparchive.com[2] |
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The following facts about the 11848 A Phase Noise Interface are absent from this record as of this revision. First-hand knowledge or a citation closes a gap; every submission is reviewed before publication.
The control-system platform and OS era of the 11848 A Phase Noise Interface are not on record.
Answerable by: an engineer who operated it or OEM installation records
The process node or technology generation of the 11848 A Phase Noise Interface is not on record.
Answerable by: an OEM datasheet or a fab qualification report
No publicly documented compatible parts, consumables, or accessories for the 11848 A Phase Noise Interface are on record.
Answerable by: an OEM parts catalog or a service engineer
No publicly hosted manuals, SOPs, or datasheets for the 11848 A Phase Noise Interface are on record.
Answerable by: university cleanroom staff or an OEM application specialist
Last updated Oct 4, 2026.
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