The Rohde & Schwarz SWOB5-E3 service manual provides detailed instructions for the setup, operation, and troubleshooting of the logarithmic amplifier, including guidance on input connections, range selection, and display adjustments. It also covers maintenance procedures, such as verifying the amplifier's performance and ensuring accurate signal measurement, with specific steps for adjusting settings and using filters to optimize performance.
Manual Overview
The Rohde & Schwarz SWOB5-E3 service manual provides detailed guidance on troubleshooting, error diagnostics, calibration, and adjustments for the logarithmic amplifier module. The manual emphasizes the importance of maintaining optimal sensitivity and noise bandwidth by processing HF signals below and above 20 mV through two separate reception paths. Troubleshooting involves checking the logarithmic amplifier’s performance by setting the device to AUTO mode and adjusting various controls like the wobble range and frequency center. Error diagnostics are facilitated by observing deviations in the display line, which should not exceed ±1 dB from the set HF output attenuators. Calibration procedures include aligning the signal paths and ensuring the display line matches the reference line using the appropriate switches and potentiometers. The manual also provides board-level guidance, detailing the construction of the signal paths and the role of components like the voltage discriminator and switchable voltage divider. Regular maintenance checks are advised to ensure the device operates within specified parameters, with noise filters recommended for measurements below -50 dB.
Quick Issues Covered
- Diagnose logarithmic amplifier issues and calibration procedures.
- Error codes for signal path and modulation faults.
- Power-up failures and troubleshooting for SWOB5-E3.
Overview
ROHDE & SCHWARZ LOG. AMPLIFIER SWOB5-E3 is a device designed for processing RF signals below and above approximately 20 mV using two separate, parallel input sections to achieve optimal sensitivity and NF bandwidth. The processed signal is then combined into a display voltage. The manual covers the device’s properties, technical data, basic settings, maintenance, functional description, and repair instructions. It includes detailed information on the operation and construction of the amplifier, technical specifications, and instructions for setup and maintenance.
Specifications
- Eingang NF: BNC-Buchse, 3-polige Buchse
- Innenwiderstand: ca. 100 kΩ
- Messbereich: 10/20/50/80/100 dB
- Bildlage-Einstellbereich: > 70 dB
- Rauschpegel: typ. 170 μV
- Genauigkeit: besser ± 1,5 dB
- Max. Messspannung am HF-Eingang: 1V
- Max. zulässige Eingangsspannung: 14 V
- Pegellinie: geeicht in mV, dBV und dB
- Absolutmessung: 10 μV…1 V/-100 dBV…0 dBV
- Relativmessung: 0 dB…100 dB
- Pegelanzeige: 3 1/2-stellig, digital
- Auflösung: 10 μV – 1000 μV
- dBV/dB-Anzeigebereich: > 100 dB
- Auflösung: 0,1 dB
- Anzeigegenauigkeit: 0,1 dB bzw. 2% +1 digit
- 3 dB-Punkt: ca. 40 Hz
- Kompensation von Störsignalen: +6V HF, 10 mV HF
Controls & Indicators
The source does not provide specific information about the front-panel controls/indicators.
Installation / Setup
The setup for the Rohde & Schwarz LOG. AMPLIFIER SWOB5-E3 involves connecting the measurement voltage through the appropriate input based on the position of the input selector switch. The device can be turned on and off, and the display range can be selected using the range switch. The horizontal line position is adjustable with a potentiometer, and the level corresponding to the line position is displayed digitally. The vertical image position is adjustable, and a warning lamp indicates when the maximum compensable input interference voltage is exceeded. Full sensitivity is achieved with specific demodulators and when the noise filter is activated.
Operation
The manual provides basic usage steps for the logarithmic display amplifier SWOB5-E3. The measurement voltage can be supplied via the BNC socket from the measuring head or directly from the measuring object through the NF input, depending on the position of the input selector switch. The range switch allows the user to turn the unit on and off and select the display range for full screen height at 100, 80, 50, 20, or 10 dB. The calibrated horizontal line can be shifted with a 10-turn potentiometer, and the level corresponding to the horizontal line’s position is displayed digitally in dB, dBV, or mV. A reference point (0 dB) can be set during relative measurement by pressing a button. The vertical image position is adjusted with a small knob, with a range of approximately 10 to 80 dB, depending on the switch setting. A red warning lamp indicates when the maximum compensable input noise voltage is exceeded. Full sensitivity is achieved with the demodulator SWOB5-Z1 or the HF through-head SWOB5-Z3 when the noise filter is activated.
Troubleshooting & Error Codes
Refer to the PDF for details.
Safety & Warnings
Refer to the PDF for details.
Download GERMAN Service manual (PDF – 2.9 MB)
Rohde-Schwarz SWOB5 E3 Service Manual in German: Troubleshoot and calibrate equipment efficiently. PDF size: 2.9 MB.
- Brand: Rohde-schwarz-swob5-e3-service-manual
- Model: GERMAN
- Type: Service manual
- File size: 2.9 MB
Overview
Brief overview of the product.
Specifications
- Key spec 1
- Key spec 2
Controls & Indicators
Control panel/button layout.
Installation / Setup
- Step 1…
- Step 2…
Operation
Basic usage, modes, cycles.
Troubleshooting & Error Codes
| Issue / Code | Fix |
|---|---|
| Example | How to fix… |
Safety & Warnings
- Important warning…
Downloads
Download GERMAN service manual (PDF)
Rohde-Schwarz SWOB5-E3 Service Manual Overview
The Rohde-Schwarz SWOB5-E3 is a precision electronic test and measurement device designed primarily for professional use in telecommunications and signal analysis. This German-engineered equipment provides reliable and accurate diagnostics, making it an essential tool for engineers and technicians working with complex radio frequency (RF) systems. The service manual offers comprehensive guidance on maintenance, repair, and optimal operation to ensure peak performance and longevity of the device.
Main Features and Specifications
- High-precision RF signal analysis with wide frequency range coverage
- Robust German engineering ensuring durability and reliability
- Advanced calibration functions for accurate measurements
- User-friendly interface with clear display and intuitive controls
- Comprehensive diagnostic and troubleshooting capabilities
- Compatibility with various signal types and modulation schemes
- Detailed error logging and reporting features
Basic Usage and Operation Tips
Before operating the SWOB5-E3, ensure the device is properly calibrated according to the manual’s instructions. Always power on the device using the designated power switch and allow it to complete its self-test routine. Use the menu controls to select the desired measurement mode and input the correct signal parameters. For best results, maintain stable environmental conditions and avoid exposure to excessive vibration or electromagnetic interference. Regularly update the device firmware if applicable to benefit from the latest features and improvements.
Troubleshooting and Maintenance Notes
If the device exhibits unexpected behavior or inaccurate readings, first verify all cable connections and power supply stability. Consult the error codes section in the manual to identify specific faults. Routine maintenance includes cleaning air vents to prevent overheating and inspecting connectors for wear or corrosion. Replace any damaged components only with authorized parts to maintain device integrity. For complex repairs, refer to the detailed service procedures outlined in the manual or contact Rohde-Schwarz support.
Safety Reminder
Always follow standard electrical safety protocols when operating or servicing the SWOB5-E3. Disconnect the device from power before performing any internal maintenance. Avoid contact with exposed circuitry to prevent electric shock. Use proper grounding techniques and handle components with care to avoid damage from static electricity. Adhering to these safety guidelines ensures safe operation and protects both the user and the equipment.