Keysight (Agilent HP) E8363A Repair Service
Product model
E8363A Microwave VNA 45MHz- 40GHzServices
Description

Repair prices
E8363A Specifications – click to expand
E8363A Specifications
- PNA-series vector network analyzer
- Windows-based with color display, LAN and GPIB interfaces
| Specification | Value |
|---|---|
| Frequency range | 45 MHz to 40 GHz |
E8363A Options – click to expand
E8363A Options
- 010, Time Domain
- 014, Configurable Test Set
- 016, Receiver Step Attenuators
- 080, Frequency Offset
- 081, Reference Receiver Switch
- 082, Scalar Mixer Calibration
- 083, Vector Mixer Calibration
- UNL, Extended Power Range and Bias Tees
- 1CM, Rack Mount Kit
Agilent / HP E8363A Error Codes – click to expand
Agilent E8363A Error Messages
The E8363A messages below are the ones that point to hardware, followed by what a failed performance test means on this model.
E8363A 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 | On the E8363A check cables W37/W38 from the A23/A24 detectors to the A16 test set motherboard and W39 to the A21 SOMA 50. One port only: replace that port's detector. Both ports: replace A16. |
E8363A 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 A31–A34 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 E8363A? Analyzer Repair Inc. repairs and calibrates the Agilent E8363A in-house in Cocoa, Florida. Free estimate once the unit is in our lab. Contact us for service.
Based on the Agilent PNA Series Service Guide E8362A/E8363A/E8364A (E8364-90001).
Agilent / HP E8363A Replaceable Parts – click to expand
Agilent E8363A Replaceable Assemblies and Part Numbers
Assembly-level part numbers for the E8363A. Check your options before ordering option-only parts.
| Reference | Assembly | Agilent part number | Notes |
|---|---|---|---|
| A1 | Keypad assembly | E8356-60001 | |
| A2 | Display assembly | E8356-60002 | Inverter 0950-3379, lamp 2090-0386, glass 1000-1161 sold separately |
| A3 | Front panel interface board | E8361-60061 | |
| A4 | Power supply assembly | 0950-4599 | |
| A6 | Signal processing ADC module (SPAM) board | E8356-60006 | |
| A8 | Fractional-N synthesizer board | E8364-60099 | A9 second Frac-N with Option 080 |
| A10 | Frequency reference board | E8364-60004 | |
| A11 | Phase lock board | E8364-60005 | |
| A12 | Source 20 | E8362-60002 | Exchange E8362-69002 |
| A14 | System motherboard | E8364-60006 | |
| A15 | CPU board, 500 MHz | E8364-60025 | |
| A16 | Test set motherboard | E8364-60007 | |
| A17 | LOMA 10 (LO multiplier/amplifier) | 5087-7127 | Exchange 5087-6127 |
| A18 | MA 20 (multiplier/amplifier) | 5087-7128 | Exchange 5087-6128 |
| A19 | Splitter | 5087-7139 | |
| A20 | LODA (LO distribution assembly) | 5087-7129 | Exchange 5087-6129 |
| A21 | SOMA 50 (source multiplier/amplifier) | 5087-7130 | Exchange 5087-6130 |
| A22 | Switch splitter | 5087-7132 | Exchange 5087-6132 |
| A23, A24 | Channel R1 / R2 detector | 5087-7133 | |
| A25, A26 | Test port couplers | 5086-7518 | |
| A27, A30 | Channel A / B first converter (mixer) | 5087-7122 | Exchange 5087-6122 |
| A28, A29 | Channel R1 / R2 first converter (mixer) | 5087-7145 | Exchange 5087-6145 |
| A31–A34 | Receiver modules (A, R1, R2, B) | E8364-60003 | Exchange E8364-69003 |
| A35 | Receiver motherboard | E8364-60010 | |
| A36, A37 | 60 dB source step attenuators | 33325-60004 | Option UNL |
| A38, A39 | Bias tees (with cable) | 5087-7233 | Option UNL |
| A40 | Floppy disk drive | 0950-2782 | |
| A41 | Programmed hard disk drive | E8801-60063 | |
| B1 | Fan | 3160-1085 | 3 required |
Part obsolete? Many E8363A assemblies are no longer sold new. Analyzer Repair Inc. repairs E8363A 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 PNA Series Service Guide E8362A/E8363A/E8364A (E8364-90001).
