The Rohde & Schwarz SMS Signal Generator manual provides detailed instructions for setup, operation, and troubleshooting, including information on frequency range, modulation types, and output level adjustments. It also covers the use of plug-in circuit boards for easy servicing and the IEC-bus programmability for integration into automatic test systems.
Manual Overview
The Rohde & Schwarz SMS Signal Generator service manual provides detailed guidance for technicians on troubleshooting, error diagnostics, calibration, and board-level maintenance. Troubleshooting is facilitated by the use of plug-in circuit boards and signature analysis compatibility, which streamline the identification and resolution of issues. The manual includes specific error codes and diagnostics, such as the OVERFLOW LED indicator for non-valid entries, which helps in quickly identifying input errors. Calibration and adjustments are made easy with the frequency and modulation settings that can be entered via a keyboard, allowing for precise control over frequency deviation and modulation depth. The SMS offers a wide frequency range from 400 kHz to 520 MHz, extendable to 1040 MHz with the Frequency Range Extension Option SMS-B2. The manual also provides board-level guidance, highlighting the ease of access to internal components for servicing. The SMS is designed for high accuracy and stability, with options for further enhancements like the SMS-B1 reference oscillator for improved frequency stability.
Quick Issues Covered
- Diagnose power-up failures with signature analysis compatibility.
- Error codes for non-valid entries indicated by OVERFLOW LED.
- Schematics aid in circuit tracing and plug-in board servicing.
Overview
The Rohde & Schwarz Signal Generator SMS is designed for cost-effective RF measurements in production and servicing of sound broadcasting receivers and commercial receivers, such as those used in aviation communications, radiotelephony, telemetry, and navigation. It features a crystal-controlled frequency display with a resolution of 100 Hz and offers modulation capabilities including AM and FM. The device is compact, portable, and suitable for use in automatic test systems due to its IEC-bus programmability with a setting time of 40 ms. The frequency range is from 400 kHz to 520 MHz, extendable to 1040 MHz with an optional extension. The SMS provides a stable output signal with low spurious deviation and a high S/N ratio. It supports various modulation types and offers options for enhanced frequency stability and extended frequency range.
Specifications
- Frequency range 0.1/0.4 to 520 MHz
- 8-digit frequency readout
- Resolution 100 Hz
- Frequency Range Extension Option SMS-B2 range extension to 1000 (1040) MHz
- Crystal-controlled frequency
- Reference Oscillator Option SMS-B1
- Output signal low spurious deviation
- S/N ratio typically 120 dB at 1Hz, 145 dB at 1 MHz
- AM modulation up to m = 95%
- FM modulation up to deviation = 125 kHz
- Internal modulation generator 400 or 1000 Hz
- Modulation frequency and depth entry via keyboard
- Output level adjustable from +13 to -137 dBm
- Resolution of 0.1 dB
- Error typically 0.8 dB
- Minimum output voltage of 0.03 nV
- Continuous level variation over 10 dB in 0.1-dB steps
- Internal 10-MHz reference frequency output (TTL level)
- External reference frequency input (> 0.5 V, sinewave or squarewave)
- Level indication in nV, mV, dB(µV) or dBm
- Fine level adjustment of 0 to -10 dB
- RF output level in steps of 0.1, 1 or 10 dB
- RF output 0.03 nV to 1V
- Overall error <1.5 dB
- Built-in overvoltage protection
Controls & Indicators
The front-panel controls of the Signal Generator SMS include keyboards for stepwise or continuous variation of settings, function keys for storing settings, and a keyboard for entry of frequency, channel step size, modulation depth, frequency deviation, or RF level. There are also keys for switching off the RF signal without changing settings, and selection keys for the type of modulation. The front panel features displays for frequency, modulation, and level, arranged in three sections for user-oriented operation.
Installation / Setup
Refer to the PDF for details.
Operation
Refer to the PDF for details.
Troubleshooting & Error Codes
“”
Safety & Warnings
Refer to the PDF for details.
Download MANUAL Service manual (PDF – 25.6 MB)
Service manual PDF for Rohde-Schwarz SMS Signal Generator: troubleshoot, calibrate, and operate efficiently. File size: 25.6 MB.
- Brand: Rohde-schwarz-sms-signal-generator-operation-service
- Model: MANUAL
- Type: Service manual
- File size: 25.6 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 MANUAL service manual (PDF)
Rohde-Schwarz SMS Signal Generator Overview
The Rohde-Schwarz SMS Signal Generator is a precision instrument designed for generating high-quality RF signals used in testing and development of wireless communication devices. It supports a wide frequency range and offers stable, low-noise signal output, making it ideal for applications in research labs, production testing, and field measurements.
Main Features and Specifications
- Frequency range: 9 kHz to 3 GHz (model-dependent)
- Output power: -130 dBm to +13 dBm
- Phase noise: Low phase noise for accurate signal generation
- Modulation capabilities: AM, FM, PM, pulse modulation
- High spectral purity with low harmonic distortion
- Intuitive user interface with LCD display
- Remote control via GPIB, LAN, or USB interfaces
- Compact and robust design for laboratory and field use
Basic Usage and Operation Tips
Before operating the SMS Signal Generator, ensure it is properly connected to a stable power source and your measurement setup. Use the front panel controls or remote interface to select the desired frequency and modulation settings. Always start with low output power and gradually increase to avoid damaging connected devices. Regularly calibrate the instrument according to the manufacturer’s guidelines to maintain measurement accuracy.
Troubleshooting and Maintenance
If the signal output is unstable or distorted, verify all cable connections and check for any physical damage. Perform a self-test using the built-in diagnostic functions. Clean the exterior with a soft, dry cloth and avoid exposure to extreme temperatures or humidity. For persistent issues, consult the service manual or contact Rohde-Schwarz support for professional assistance.
Safety Reminder
Always follow standard electrical safety procedures when operating the signal generator. Avoid exposure to high RF power levels and ensure proper grounding to prevent electric shock. Disconnect the device from power before performing any maintenance or cleaning.