The Rohde & Schwarz USVH operation manual provides detailed instructions on setting up the device, including adjusting the local AC supply voltage and calibrating the instrument for accurate measurements across various frequency ranges. It also offers guidance on troubleshooting, such as setting the mechanical zero on the meter and ensuring frequency stability after a warm-up period for precise operation.
Manual Overview
The Rohde & Schwarz USVH Selective Microvoltmeter operation manual provides detailed instructions for troubleshooting, calibration, and maintenance of the device. For troubleshooting, the manual emphasizes checking the mechanical zero of the meter and ensuring no signal or noise is applied during the process. Calibration is crucial for accurate measurements and involves setting the frequency range switch and IF bandwidth switch according to specified ranges. The manual outlines four calibration scenarios based on frequency and bandwidth, with detailed steps for each. Error diagnostics are not explicitly detailed, but maintaining frequency accuracy and stability is stressed, particularly after a warm-up period. Adjustments at the board level include setting the local AC supply voltage and ensuring the correct fuse is used. The manual specifies the need for precise tuning and calibration to achieve optimal performance, especially in high-frequency applications.
Quick Issues Covered
- Diagnose power-up failures with voltage indicator glow lamp.
- Calibrate frequency ranges for accurate measurements.
- Adjust mechanical zero for precise meter readings.
Overview
The Selective Microvoltmeter Type USVH BN 1521 is a highly sensitive and selective instrument designed for various measurement applications. It covers a frequency range from 10 kHz to 30 MHz, with six specific ranges and selectable IF bandwidths of 500 Hz or 5 kHz. The device is capable of measuring voltage and level ranges from 0.2 nV to 1 V or -134 to +2 dB across 13 ranges. It is particularly useful for selective attenuation and frequency-response measurements, modulation depth measurement, and RF leakage measurements, among others. The manual provides detailed specifications, uses, and instructions for adjusting to local AC supply voltage, setting mechanical zero on the meter, and calibration procedures.
Specifications
- Frequency range: 10 kHz to 30 MHz
- Frequency accuracy: 10 kHz to 1 MHz ±2% ±3 kHz, 1 MHz to 30 MHz ±2% ±50 kHz
- Voltage and level ranges: 0.2 nV to 1 V or -134 to +2 dB
- Scale expansion: 0. relative calibration 7 to 10
- Voltage accuracy at 1 MHz and 1 V: ±3%, after calibration
- Frequency response referred to 1 MHz: 20 kHz to 10 MHz ±5%, 10 kHz to 30 MHz ±10%
- Attenuation accuracy: ±2%
- IF bandwidth, selectable: 500 Hz or 5 kHz
- Image frequency rejection: > 60 dB
- Selectivity at twice the bandwidth from centre frequency: at 500-Hz IF bandwidth down 35 dB, approx., at 5-kHz IF bandwidth down 50 dB, approx.
- Noise voltage: at 500-Hz IF bandwidth and tuning to f> 50 kHz 0.15 nV, approx., to f< 50 kHz 0.25 nV, approx.
- Input: 13-mm coaxial socket
- Input impedance: 50 Ω, 60 Ω, 75 Ω, 150 Ω, 600 Ω and 500 kΩ shunted by 20 pF, switch-selected
- AF output: 2 telephone jacks
- Output impedance: 6 kΩ, approx.
- Output voltage at full-scale deflection: 1 V, approx. at 30% modulation
- Power supply: 115/125/220/235 V ±10%, 47 to 63 Hz (85 VA)
- Valves, etc.: 1 valve E180F, 1 valve CC 903, 4 valves ECC 801 S, 4 valves EF 800, 1 valve EF805S, 1 valve EF 806S, 2 valves PL 81, 1 reference tube 85A2, 1 fuse 0.4A; M0,4C DIN 41571 (for 220/235 V), 1 miniature glow lamp RL 210
- Dimensions: 540 x 268 x 378 mm
- Weight: 30 kg
Controls & Indicators
Refer to the PDF for details.
Installation / Setup
The installation and setup of the Selective Microvoltmeter Type USVH BN 1521 involves several key steps:
1. Adjusting to Local AC Supply Voltage: The device is initially set for 220V AC. For other voltages (115V, 125V, or 235V), the chassis must be removed from its cabinet to adjust the fuse according to the desired voltage. A 400-mA fuse is suitable for 220V and 235V, while an 800-mA fuse is needed for 115V and 125V.
2. Mechanical Zero Setting: The meter’s pointer should be at mechanical zero when the device is off. Adjustments can be made using the slotted shaft in the meter housing. With the device on, ensure no signal or noise voltage is applied when setting the zero.
3. Calibration: Calibration is necessary for accurate operation across four frequency ranges. The process involves setting the range switch to CALIBRATION (1 MHz) and the SCALE EXPANSION switch to WITHOUT, followed by specific adjustments for each frequency range.
4. Warming-Up Period: A warming-up period of about one hour is required for optimal frequency accuracy and stability, especially for measurements from 1 to 30 MHz at a 500 Hz IF bandwidth.
Operation
To operate the Selective Microvoltmeter Type USVH, follow these basic steps:
1. Adjust to Local AC Supply Voltage: The device is initially set for 220V AC. For other voltages (115V, 125V, or 235V), adjust by removing the chassis, inserting the appropriate fuse, and reassembling the unit.
2. Set Mechanical Zero on the Meter: Ensure the meter pointer is at zero with the device off. Adjust using the slotted shaft if necessary. When on, ensure no signal is applied and set the range switch to “10 mV/-40 dB”, IF BANDWIDTH to “500Hz”, and SCALE EXPANSION to WITHOUT.
3. Calibration: Perform calibrations for different frequency and bandwidth ranges. Set the range switch to CALIBRATION (1 MHz) and SCALE EXPANSION to WITHOUT. Follow specific steps for each calibration range as detailed in the manual.
These steps ensure proper setup and calibration for accurate measurements.
Troubleshooting & Error Codes
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Safety & Warnings
Refer to the PDF for details.
Download MANUAL Operation manual (PDF – 869.1 KB)
Rohde-Schwarz USVH Operation Manual: Guide for technicians to troubleshoot and calibrate USVH models. PDF size: 869.1 KB.
- Brand: Rohde-schwarz-usvh-operation
- Model: MANUAL
- Type: Operation manual
- File size: 869.1 KB
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 operation manual (PDF)
Rohde-schwarz-usvh-operation MANUAL Overview
The Rohde-schwarz-usvh-operation device is a precision electronic testing instrument designed for advanced signal analysis and measurement. It is widely used in telecommunications, research laboratories, and industrial environments to ensure accurate diagnostics and performance verification of RF and microwave components. This operation manual provides comprehensive guidance on setup, usage, and maintenance to maximize the device's efficiency and reliability.
Main Features and Specifications
- Frequency range: 9 kHz to 6 GHz
- High-resolution display with intuitive user interface
- Multiple measurement modes including spectrum analysis, signal generation, and modulation analysis
- Built-in signal processing algorithms for enhanced accuracy
- Compact and rugged design suitable for field and lab use
- USB and LAN connectivity for remote control and data transfer
- Battery operation with long-lasting power support
Basic Usage and Operation Tips
Before operating the device, ensure it is properly connected to a stable power source or fully charged battery. Power on the instrument and allow the system to complete its self-test. Select the desired measurement mode via the main menu and configure parameters according to your testing requirements. Use the intuitive touchscreen or rotary knobs to navigate settings. Always calibrate the device before critical measurements to maintain accuracy. Refer to the manual’s quick start section for step-by-step guidance on common operations.
Troubleshooting and Maintenance
If the device fails to power on, verify the battery charge or power connection. For unexpected measurement errors, perform a system reset and recalibrate. Keep the device clean and free from dust by gently wiping with a soft, dry cloth. Avoid exposure to extreme temperatures or moisture. Regularly update the firmware via the manufacturer’s website to ensure optimal performance and access to new features. For persistent issues, consult the troubleshooting chapter or contact Rohde-schwarz-usvh-operation customer support.
Safety Reminder
Always handle the Rohde-schwarz-usvh-operation device with care. Avoid operating it in explosive or highly humid environments. Disconnect the device from power sources before cleaning or performing maintenance. Use only accessories and cables approved by the manufacturer to prevent damage or injury. Follow all local safety regulations and guidelines while using this equipment to ensure safe operation.