Key facts
- Manuals
- 2
- Languages
- ZH · EN
- Last added
- 2012-03-20
Featured levear manuals

Electronic Scientific Engineering VP-7727D Dual‑Channel Audio Analyzer Manual
The VP-7727D audio analyzer provides two independent channels for signal generation and measurement, featuring low‑distortion audio sources, 100 memory locations, and programmable test sequences. It supports GPIB communication for PC‑based control and can store test results for further analysis.
Key specifications include a frequency range of 5 Hz – 110 kHz, output levels from –85.9 dBV to 14.0 dBV, distortion ≤0.001 % (100 dB), and various selectable filter options for different testing scenarios. This manual is written in Chinese.
Covers: Main Specifications · Signal Source · Frequency Range · Output Level · Distortion · GPIB Interface

Levear VP-8193D/VP-8194D/VP-8131D/VP-8132D/VP-8133D Signal Generator User Manual
This manual describes the Levear synthesized signal generator series, covering five models (VP-8193D, VP-8194D, VP-8131D, VP-8132D, VP-8133D). It provides an overview of the hardware layout, key specifications such as frequency range, output level, power consumption, and interface options (GP‑IB, RS‑232‑C, EXT I/O). The document also explains modulation capabilities, including AM, FM, FM‑stereo, RDS + ARI, and DDS audio options.
Operational guidance includes panel functions, rear‑panel connector descriptions, external control features, memory handling, and safety information. The manual is intended for end‑users and technicians who need to set up, calibrate, and maintain the signal generators in audio, automotive, or broadcast test environments.
Covers: Specifications · Features · Modulation Options · Output Characteristics · Interfaces · Rear Panel Layout
Latest levear manuals
Electronic Scientific Engineering VP-7727D Dual‑Channel Audio Analyzer Manual
User Manual 2 pages · 519 KB · ZHThe VP-7727D is a dual‑channel audio analyzer with low‑distortion signal source, memory, GPIB control and SINAD function.
Levear VP-8193D/VP-8194D/VP-8131D/VP-8132D/VP-8133D Signal Generator User Manual
User Manual 4 pages · 3.9 MB · ENThe Levear signal generator manual details specifications, features, and operation for VP-8193D, VP-8194D, VP-8131D, VP-8132D, and VP-8133D models.
Which document do I need?
User Manual
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Questions answered in levear manuals
What is the frequency range of the VP-7727D?
The analyzer covers frequencies from 5 Hz up to 110 kHz.
From: Electronic Scientific Engineering VP-7727D Dual‑Channel Audio Analyzer Manual
How many memory locations does the VP-7727D provide?
It provides 100 memory locations for storing test data.
From: Electronic Scientific Engineering VP-7727D Dual‑Channel Audio Analyzer Manual
What is the frequency range of the Levear signal generators?
The generators cover a frequency range from 0.01 MHz up to 280 MHz.
From: Levear VP-8193D/VP-8194D/VP-8131D/VP-8132D/VP-8133D Signal Generator User Manual
What output level can the units produce?
Output levels can be set between –20 dBuV and 126 dBuV.
From: Levear VP-8193D/VP-8194D/VP-8131D/VP-8132D/VP-8133D Signal Generator User Manual
