Rohde & Schwarz Products and Services: Six Questions, Honest Answers

I manage test equipment procurement and logistics for a small RF design consultancy. Twelve years, 200+ rush orders, more same-day turnarounds than I can count—including the client who called at 9 AM needing a spectrum analyzer by 2 PM. Rohde & Schwarz gear shows up on half my purchase orders. Not because it's the easiest to order.

These are the six questions I keep answering—for engineers, for procurement teams, and for people who landed here after googling "1507 insulation tester." In the order they're usually asked.

• What is Rohde & Schwarz GmbH & Co. KG?
• What does Rohde & Schwarz actually make?
• Is the 1507 insulation tester a Rohde & Schwarz product?
• Why are Rohde & Schwarz power supplies so expensive?
• Can R&S power supplies test USB Power Delivery while recording data?
• Should I buy used, or rent first?

1. What is Rohde & Schwarz GmbH & Co. KG?

Rohde & Schwarz GmbH & Co. KG is a Munich-based manufacturer of test and measurement equipment, broadcast technology, and secure communications systems. The "GmbH & Co. KG" suffix is the legal form—German corporate structure, roughly equivalent to a limited partnership with a limited-liability general partner. Founded in 1933, the company is still family-owned. As of early 2025, it has roughly 14,000 employees and a sales/service presence in more than 70 countries.

In practical terms, R&S builds the instruments engineers use to measure and verify electronic signals: spectrum and signal analyzers, signal generators, EMI test receivers, power sensors, network analyzers, and wireless communication testers. The CMW500 alone is a fixture in cellular test labs worldwide.

The legal entity matters to you because the quote you receive might come from the German parent or from a local subsidiary like Rohde & Schwarz USA, Inc. Both are legitimate. Just make sure the purchase order, warranty paperwork, and calibration certificate all use the same registered entity—chasing that down during an audit is exactly the kind of emergency nobody needs.

2. What does Rohde & Schwarz actually make?

Short version: the measurement layer for anything that transmits or receives a signal. That includes spectrum and signal analyzers (FSW, FPL1000), signal generators (RF models like the SMA100B, plus vector/wideband generation), vector network analyzers, EMI test receivers for compliance, power sensors (the NRP family), power supplies and source-measure units (NGU, NGM), and radio communication testers—the CMW500 being the one people name most often.

The "services" half matters as much as the boxes. R&S runs its own calibration and repair centers, which is what you want when an instrument comes due for annual re-certification and your test window can't move. They also sell software options and firmware upgrades per instrument, so the analyzer you buy today can answer new questions next year.

A naming shortcut that took me years to internalize: FS = analyzer, SM = generator, NRP = power sensor, NGU/NGM = power supply. Once that clicks, their catalog stops being alphabet soup.

3. Is the 1507 insulation tester a Rohde & Schwarz product?

No. And if you're here because of that model number, you've probably stumbled onto the wrong store in a hurry. The 1507 is a Fluke product—the Fluke 1507 insulation resistance tester. It's a handheld tool for checking insulation on motor windings, cables, and switchgear. Rohde & Schwarz doesn't make an equivalent, and it doesn't try to.

Since the underlying question is usually "how do I use it": set the dial to the MΩ position, choose your test voltage (50–1000 V on the 1507), connect the test leads, hold the test button, and read the resistance. For extended tests, use the timer or polarization-index mode. Fluke's manual and support site are the references you want for that tool.

If you were actually after an R&S product and landed here sideways, here's the honest map: R&S covers RF, wireless, and power integrity measurement. Insulation testing belongs to specialists like Fluke or Megger. Right tool, right brand, right workflow—that's what turns a rushed search into a fast answer.

4. Why are Rohde & Schwarz power supplies so expensive?

Let me give you the honest number first: an R&S NGU-series power supply costs several times what a generic bench supply costs. When the requisition lands on your desk, that gap isn't imaginary.

But I stopped buying budget supplies for measurement benches after a specific incident in early 2023. We bought a "value" supply to save about $1,200 on a battery-simulation test bench. On paper the specs matched: same voltage range, same current, same noise-floor claims. In practice, the output glitched badly during load transients, and a firmware engineer burned six days chasing a power-state bug that turned out to be the supply's fault. Six days of engineering time at consultant rates is roughly $6,000. Saving $1,200 to spend $6,000 is, as it turns out, not a strategy.

What you're paying for with R&S supplies is that this scenario doesn't happen: cleaner output, faster transient response, measurements calibrated well enough that your spec sheet comes from the instrument rather than being argued with by it. The two-quadrant NGU models sink and source current for battery emulation, and the logging and arbitrary-waveform features live in the same box.

My rule after a decade of requisitions: if the power supply is in the measurement path—meaning its output affects the numbers you report—buy the one that measures well. If it's just charging a battery or lighting an indicator, buy the $200 one. The cost of a wrong decision isn't linear, and the wrong end of that curve is very expensive.

5. Can R&S power supplies test USB Power Delivery while recording data?

Yes. Direct answer: the R&S NGU and NGM series supplies can source or sink current while recording voltage and current continuously—at rates fast enough to capture the detail you need—and export that recorded list afterwards to a USB drive or PC.

The nuance is USB-PD negotiation. A power supply can't impersonate a charger by itself; you need a PD trigger/sink adapter to negotiate a profile such as 20 V/3 A with the device under test, or a PD source emulator for the opposite direction. Once the profile is negotiated, the supply takes over, delivers clean power, and logs the actual voltage and current trace throughout the test.

That recorded list is calibrated, time-aligned measurement data, not a screenshot of a panel meter. For charge-cycle tests, load-step response, and PD profile switching, this is exactly the evidence a test report needs. And if the device is wireless—which most battery-powered devices are—pair the supply with a CMW500 handling RF on the same bench. One test bed, both halves of the story.

6. Should I buy used, or rent first?

Rent first. Whenever the deadline is tight—and in twelve years, the deadline has always been tight—renting the exact model before committing to a capital purchase avoids the second-most-expensive mistake in test equipment: buying the right brand in the wrong configuration.

Scenario from March 2024: a client needed same-day spectrum measurements for a compliance gate. A new analyzer would take three weeks. We rented the unit we were considering from an equipment house; it was on a truck within four hours, and the engineer had usable data by lunch. The rental cost roughly 10% of the purchase price, and it proved the internal preamp option was mandatory—so we spent the real money on the right configuration instead of the wrong one.

Used gear is a legitimate path too. R&S instruments hold calibration well, and authorized resellers sell tested units with fresh certificates. I've bought two used units myself; both are still on our bench. I still kick myself for the one demo I skipped: seller said "works fine," the first test run said otherwise, and the return cost us a week of measurements. Not ideal, but workable. Barely.