Rohde & Schwarz Part Numbers Explained: 1321, 1323, 5601 Series Guide

If you work with RF test equipment, you have likely seen part numbers like:

  • 1321.1111.02
  • 1323.1890.02
  • 5601.4007.05
  • 1304.0004.03
These are not product models. They are internal material numbers used to identify components inside Rohde & Schwarz instruments.

What Are R&S Part Numbers?

Rohde & Schwarz uses structured material codes to manage internal components, spare parts, and repair modules.

These part numbers are essential for:

  • Equipment repair
  • Spare parts sourcing
  • Module replacement
  • Inventory management

Understanding the Structure

Most part numbers follow this format:

XXXX.XXXX.XX

This typically represents:

  • Product group
  • Module type
  • Revision/version

Key Part Number Categories

1. 1321 / 1323 / 1328 Series – Core Modules

  • RF processing boards
  • IF modules
  • Digital signal boards
  • CPU / FPGA units

These are the most critical and high-demand components.

2. 5601 / 5800 Series – RF Front-End

  • Amplifiers
  • Attenuators
  • Mixers

3. 1304 / 1309 / 1314 Series – Power & Interface

  • Power supply modules
  • LAN / GPIB / USB boards

4. 1801 / 1802 / 1803 Series – Logic Boards

  • Main control systems
  • Embedded processing units

5. 0272 / 0358 Series – Connectors

  • RF connectors
  • Adapters

Applications

These parts are widely used in:

  • Spectrum analyzers
  • Signal generators
  • Vector network analyzers

Why These Part Numbers Matter

  • Faster repair identification
  • Global sourcing capability
  • High resale demand

Frequently Asked Questions

Are R&S part numbers the same as model numbers?

No, they are internal component identifiers.

Can I buy parts using these numbers?

Yes, many suppliers list products using these codes.

Which parts are most valuable?

1321, 1323, and 5601 series modules are typically high demand.

Conclusion

Understanding Rohde & Schwarz part numbers allows engineers and traders to identify, source, and utilize high-value components efficiently.