Keysight (Agilent HP) N3382A Repair Service
Product model
N3382A PNA Network Analyzer, 300 kHz to 6 GHzServices
Description

Repair prices
N3382A Specifications – click to expand
N3382A Specifications
- PNA-series vector network analyzer
- Windows-based with color display, LAN and GPIB interfaces
| Specification | Value |
|---|---|
| Frequency range | 300 kHz to 6 GHz |
N3382A Options – click to expand
N3382A Options
- 010, Time Domain
- 014, Configurable Test Set
- 1CM, Rack Mount Kit
Agilent / HP N3382A Error Codes – click to expand
Agilent N3382A Error Messages
This N3382A list covers the on-screen errors that matter for repair and the board each one leads to.
N3382A on-screen error messages
| Message | Meaning and where to look |
|---|---|
| PHASE LOCK LOST | The A11 phase lock board sees too little reference-receiver signal to lock. Cause can be in the source, signal separation (couplers, switch) or receiver path. Check the A10 frequency reference output and the reference receiver first. |
| SOURCE UNLEVELED | The source leveling loop is open. On the N3382A start with the A12 source assembly and the A16 test set motherboard. |
N3382A failed performance test – likely cause
| Failed test | What it points to |
|---|---|
| Source power accuracy / linearity | Run the source calibration adjustment; if it still fails, the source (A12 source) is suspect. |
| Source maximum power output | Follow the signal through the separation path (switch, couplers, attenuators) to find the loss. |
| Frequency accuracy | Measure the rear-panel 10 MHz REF OUT; more than about 10 Hz off calls for the 10 MHz reference adjustment. |
| Trace noise | Rarely fails alone; run the receiver calibration adjustment, then suspect the A6 SPAM board. |
| Receiver compression / noise floor / dynamic accuracy | Points to the A18–A21 receivers or the A6 SPAM board. Receivers are identical, so swapping two channels confirms a bad one. |
| Calibration coefficients | Tracking terms only: run the receiver calibration adjustment. Any other error term failing means a hardware fault. |
| System crosstalk | Loose RF cable, or isolation loss in the receivers or the receiver/test set motherboard. Tighten all cables and receiver screws first. |
SCPI error ranges
| Range | Class |
|---|---|
| −100 to −199 | Command errors |
| −200 to −299 | Execution errors |
| −300 to −399 | Device-specific errors |
| −400 to −499 | Query errors |
Hardware error on your N3382A? Analyzer Repair Inc. repairs and calibrates the Agilent N3382A in-house in Cocoa, Florida. Free estimate once the unit is in our lab. Contact us for service.
Based on the Agilent N3381A/N3382A/N3383A PNA Service Guide (N3381-90001).
Agilent / HP N3382A Replaceable Parts – click to expand
Agilent N3382A Replaceable Assemblies and Part Numbers
Board and RF module part numbers for the Agilent N3382A; exchange numbers are factory-rebuilt units.
| Reference | Assembly | Agilent part number | Notes |
|---|---|---|---|
| A1 | Keypad assembly | E8356-60001 | |
| A2 | Display assembly | E8356-60002 | |
| A3 | Front panel interface board | E8361-60061 | |
| A4 | Power supply assembly | 0950-3384 | |
| A6 | SPAM board | E8356-60006 | |
| A8 | Fractional-N synthesizer board | E8356-60008 | |
| A10 | Frequency reference board | E8801-60052 | Standard; E8356-60010 with Option 1E5 |
| A11 | Phase lock board | E8356-60011 | |
| A12 | Source assembly | E8803-60062 | Exchange E8803-69062 |
| A14 | Motherboard | E8356-60014 | |
| A15 | CPU board, 500 MHz | E8364-60025 | |
| A16 | Test set motherboard | E8801-60064 | |
| A17 | LODA | E8801-60053 | E8801-60051 with Options 1E1 + 014 |
| A18–A21 | Receiver modules (A, R, C, B) | E8356-60018 | Exchange E8356-69018; 4 required |
| A22, A23 | RF switch assembly | 5087-7137 | 2 required |
| A24–A26 | Test port couplers (ports 1, 2, 3) | 5087-7021 | 3 required |
| A27 | 70 dB step attenuator | 33321-60056 | Option 1E1 |
| A30 | Floppy disk drive | 0950-2782 | |
| A31 | Programmed hard disk drive | E8801-60063 | |
| B1 | Fan | 3160-1085 | 3 required |
Part obsolete? Many N3382A assemblies are no longer sold new. Analyzer Repair Inc. repairs N3382A boards and RF modules at the component level in Cocoa, Florida. Free estimate once the unit is in our lab. Contact us for service.
From the Agilent N3381A/N3382A/N3383A PNA Service Guide (N3381-90001).
