HP & Other OEM Test Equipment – Refurbished & Ready to Ship
Not everything in a well-equipped lab carries a Keysight or Rohde & Schwarz label. Legacy HP power supplies still run burn-in racks worldwide. Anritsu signal analyzers handle LTE and W-CDMA validation across telecom labs. Niche OEMs like Digimess fill slots where the big brands never competed.
This page lists the HP, Anritsu, and other OEM instruments we currently stock — with real specs, not just model numbers. Every unit ships from the EU, functionally verified, with warranty. Agilent-era models (1999–2014) have their own dedicated page, as do Keysight-branded instruments.
Why Source Used HP & OEM Instruments from RF Labs?
- EU-based stock, fast shipping. All units ship from within the European Union — no customs delays, no surprise duties for EU buyers. International shipping is available with full logistics support.
- Functional testing on every unit. Each instrument undergoes a minimum 4-hour burn-in and full functional verification before listing. Calibration to ISO 17025 traceable standards is available on request.
- 12-month warranty. Standard coverage on all refurbished units, covering functional defects — not cosmetic wear, not accessories added after sale.
- HP legacy clarity. HP’s Test & Measurement division became Agilent in 1999, then Keysight in 2014. An HP 6674A and an Agilent 6674A are the same power supply — different front-panel logo, identical design. We track these lineages so you don’t have to guess whether a model is still supported or serviceable.
We also carry Rohde & Schwarz signal analyzers and generators — see our R&S equipment page.
HP Power Supplies
HP 6674A – Programmable DC Power Supply
The HP 6674A is a 2,100 W single-output programmable DC supply designed for standard 19″ racks, communicating over GPIB (HP-IB). Typical applications include ATE systems, component burn-in, and high-current device testing where a stable, programmable source matters more than portability.
| Parameter | Value |
|---|---|
| Output Voltage | 0 – 60 V |
| Output Current | 0 – 35 A |
| Max Power | 2,100 W |
| Interface | GPIB (IEEE 488) |
| Form Factor | 3U, 19″ rack-mount |
Used HP 6674A units typically sell at 40–60% below original list price. Final pricing depends on condition grade and whether calibration is included. Our current unit is functionally tested and available for immediate shipment.
Request a quote for the HP 6674A →
HP 6622A – Dual-Output System DC Power Supply
The HP 6622A provides two independently programmable outputs in a single chassis — a compact solution for R&D benches needing two rails without stacking separate supplies.
| Parameter | Output 1 | Output 2 |
|---|---|---|
| Voltage Range | 0 – 20 V | 0 – 50 V |
| Current Range | 0 – 4 A | 0 – 2 A |
| Interface | GPIB (IEEE 488) | |
GPIB compatibility is worth verifying against your controller setup. The HP 6622A uses standard IEEE 488 commands, and existing Agilent/Keysight I/O libraries support it without modification. We also stock the Agilent 6622A — same unit, Agilent branding — so matched pairs are possible if your application requires them.
Request a quote for the HP 6622A →
Other HP Models
Our HP inventory changes regularly. For HP-branded instruments not listed here, we can often source them through our dealer network. Send us the model number and required specifications — we typically respond within 48 hours.
Anritsu Signal Analyzers & Other RF Instruments
Anritsu MS2691A – Signal Analyzer, 50 Hz – 13.5 GHz
The Anritsu MS2691A covers 50 Hz to 13.5 GHz with analysis bandwidth options suited for wireless standards testing. Supported measurement applications include W-CDMA, LTE, and GSM — provided the relevant software options are licensed on the specific unit.
| Parameter | Value |
|---|---|
| Frequency Range | 50 Hz – 13.5 GHz |
| Measurement Applications | W-CDMA, LTE, GSM (option-dependent) |
| Analysis Bandwidth | Up to 31.25 MHz (standard), wider with options |
| Comparable Keysight Model | N9020A MXA Signal Analyzer |
A note on option keys: Licensed features — LTE demodulation, noise figure measurement, digital modulation analysis — are tied to the instrument’s serial number. This is the single most important detail to verify when buying a used Anritsu analyzer. We provide a full option readout for every MS2691A we sell, so you know exactly which capabilities are active before committing.
In terms of capability and frequency coverage, the MS2691A competes directly with the Keysight N9020A MXA. For labs already running Anritsu MX269x software workflows, staying within the ecosystem avoids the cost and disruption of migrating test routines to a different platform.
Digimess & Niche OEM Equipment
Digimess PN300 – Programmable DC Power Supply
Digimess is a lesser-known brand outside certain European markets, but the Digimess PN300 programmable power supply remains a reliable bench instrument found in educational labs, small-batch production lines, and service workshops. These units hold their value precisely because replacements from the original manufacturer are no longer available — when one fails, the only practical option is sourcing a used replacement or switching to a different platform entirely.
One practical challenge with discontinued niche OEM equipment: documentation. Manuals, driver software, and calibration procedures can be difficult to locate independently. Where available, we supply original manuals and any driver files with the unit.
The PN300 suits applications where a basic programmable DC source is sufficient and the budget doesn’t justify a Keysight N6700-series mainframe. Typical buyers include university labs replacing a failed unit in an existing automated setup, or service benches where the PN300 has been the standard tool for years and the test procedures reference it by name.
Other Niche OEM Equipment
Beyond bench instruments, we stock passive RF components from manufacturers like Microlab — including directional couplers (10 dB and 20 dB models) used in cellular infrastructure and DAS installations. These aren’t headline instruments, but they’re critical parts that can be difficult to source on short notice through standard distribution channels.
Browse our full used RF equipment catalog or shop by brand to find what you need.
How to Buy Used OEM Equipment from RF Labs
- Step 1: Find your model. Browse this page, search by model number, or view all available equipment sorted by type.
- Step 2: Request a quote. Pricing is quote-based because it depends on condition grade, installed options, and calibration tier. A unit in cosmetic grade A with fresh ISO 17025 calibration costs more than a grade B unit sold as-tested. We provide that breakdown upfront so you can match the purchase to your budget and compliance requirements.
- Step 3: Confirm details. You receive availability confirmation, detailed specs, and actual photos of the specific unit — not stock images or generic product shots.
- Step 4: Shipping and payment. EU buyers receive VAT-compliant invoicing. International shipments include full export documentation. All orders ship with tracking, insured, using carriers experienced in handling sensitive test equipment.
For in-stock items, the process typically takes 1–3 business days from quote request to shipment.
Frequently Asked Questions
Is an HP 6674A the same as an Agilent 6674A?
Yes. When HP split its test and measurement division into Agilent Technologies in 1999, product designs carried over unchanged. The HP 6674A became the Agilent 6674A — same circuit board, same firmware, same connectors. In 2014, Agilent’s electronic measurement business became Keysight Technologies, and some later production runs carry Keysight branding. All three variants are functionally identical. Calibration standards and service procedures apply regardless of which logo appears on the front panel. For more on the Agilent lineup, see our Agilent equipment page.
Can you calibrate an Anritsu MS2691A?
Yes. We offer calibration through ISO 17025 accredited partners. The procedure covers frequency accuracy, level accuracy, and spurious response verification across the full 50 Hz – 13.5 GHz range. Basic functional calibration takes roughly one week; full accredited calibration with certificate typically requires two to three weeks depending on lab availability.
Do you offer a return policy or warranty on used OEM equipment?
Every refurbished unit ships with a 12-month functional warranty. If the instrument fails to meet its published specifications within that period, we repair or replace it. Cosmetic condition is documented with photographs before shipment and is not covered under warranty. Learn more about our refurbishment and calibration process.
Can you source a model not listed on this page?
In most cases, yes. We maintain a sourcing network across European and international dealers specializing in used test and measurement equipment. Send us the model number and required options — we typically respond within 48 hours with availability and pricing. This applies to HP, Anritsu, Digimess, and other OEM brands not covered on our main Keysight or Rohde & Schwarz pages.
Ready to order? Request a quote for any HP, Anritsu, Digimess, or other OEM model. Include the model number and any required options or calibration preferences — we respond with availability, condition details, and pricing within one business day.