Rohde & Schwarz CBT Series Bluetooth Testers
2 models with full specifications from Rohde & Schwarz.
The Rohde & Schwarz CBT series consists of specialized Bluetooth testers engineered for fast, accurate RF measurements. These instruments support Bluetooth Basic Rate (BR), Enhanced Data Rate (EDR), and Low Energy (LE) test requirements. The series serves two primary use cases: benchtop development where active visual feedback is critical, and automated production environments where space-efficiency and rack integration are prioritized. By providing consistent measurement logic across different hardware configurations, the series allows seamless migration of test sequences from initial design stages through to final high-volume manufacturing.
- Frequency Range
- 2.400 GHz to 2.485 GHz
- Warm-Up Time
- Approximately 30 minutes
- Operating Temperature
- 5 °C to 45 °C
- Primary Interfaces
- GPIB, LAN, USB, RS-232
Models in this series
Measurement Capabilities and Performance
The CBT family is equipped to perform comprehensive transmitter and receiver testing. The standard Rohde & Schwarz CBT supports vital RF metrics, including nominal power measurement accuracy of less than 0.5 dB (typically less than 0.3 dB) and a peak power measurement range of -50 dBm to +30 dBm. It also measures carrier frequency drift, Initial Carrier Frequency Tolerance (ICFT), maximum drift rate, and frequency deviations (both F1 average and F2 maximum).
Modulation characteristics for GFSK and Adjacent Channel Power (ACP) measurements are integrated as standard. For users requiring Enhanced Data Rate (EDR) testing, option CBT-K55 adds support for EDR Relative Power Measurement and EDR Differential Phase Encoding on the Rohde & Schwarz CBT.
Form Factor and Interface Differences
The primary distinction between the two models lies in their physical layout and target application environment:
- Rohde & Schwarz CBT: This model features an integrated 8.4-inch TFT color display with a 640 × 480 VGA resolution, making it well-suited for interactive troubleshooting. It has a weight of 11 kg and external dimensions of 435 mm × 192 mm × 426 mm (including feet). It includes a VGA output for duplicating the screen onto external displays.
- Rohde & Schwarz CBT32: This is a headless, 19-inch rackmount unit with a compact 2 HU form factor. It is designed for automated test systems where no local display is needed. It weighs 6 kg and has dimensions of 427 mm × 97 mm × 426 mm. The CBT32 also features 10 MHz reference frequency input and output ports via BNC connectors for system synchronization.
RF Output and Power Specifications
The Rohde & Schwarz CBT32 details specific RF level ranges for system design. It features an RF COM port with an output power range of -120 dBm to 0 dBm and an input power range of -60 dBm to +30 dBm. The dedicated RF OUT port provides an output power range of -120 dBm to +13 dBm. The output power resolution on this unit is 0.1 dB, with VSWR specifications of less than 1.2 at the RF COM port and less than 1.3 at the RF OUT port. Both models share a nominal warm-up period of 30 minutes and operate within a temperature range of 5 °C to 45 °C.
Frequently asked questions
- What is the physical difference between the CBT and the CBT32?
- The Rohde & Schwarz CBT features an integrated 8.4-inch TFT display and a VGA video output, whereas the Rohde & Schwarz CBT32 is a headless, space-saving 2 HU 19-inch rackmount instrument designed for automated test setups.
- Which Bluetooth versions does the CBT32 support?
- Depending on installed options, the Rohde & Schwarz CBT32 supports Bluetooth versions v1.1, v1.2, v2.0 + EDR, v2.1 + EDR, v3.0 + HS, v4.0, v4.1, and v4.2.
- What is the weight difference between the two models?
- The Rohde & Schwarz CBT weighs 11 kg, whereas the compact Rohde & Schwarz CBT32 weighs 6 kg.