![stereo test tone generator stereo test tone generator](http://filegets.com/screenshots/full/test-tone-generator_12654.png)
A further 'in phase' LED illuminates when the oscillator output and metering input are in phase (0 dB level or greater) for checking system and cable phase. These increments permit coarse level indication and adjustment, and final level setting to within 0.5dB of operating level.
#Stereo test tone generator windows
A column of eight LED back-lit windows forms a level meter, with indications of -20 dB, -10 dB, -3 dB, -1 dB, 0 dB, +1 dB, +3 dB, +10 dB. In addition there is a switch to set the balanced input to microphone or line level, a loudspeaker grille and a rotary speaker level control. The front panel has a switch to set the balanced output to microphone or line level and indicators for 'power on' and 'low battery', similar to the PT-ASG1. When the balanced input is in microphone mode, -46dBu, (50dB below +4dBu 0VU = +4dBu) will result in a 0dB meter reading. The meter, loudspeaker and phase indicator are fed by two inputs the unbalanced input has a input level of -10dBV for a 0dB meter reading, the balanced input can be set to either +4dBu or +6dBu for a 0dB meter reading when in line level mode.
#Stereo test tone generator generator
This combines in one instrument the facilities offered by the PT-ASG1 portable audio signal generator with a monitor loudspeaker, an LED level meter and a phase indicator. PT-AMG2 Portable Audio Signal Generator and Monitor Optional accessories: Batteries, power adapter, 24V, see RDL POWER SUPPLIES. Included accessories: Test leads, bench-top stand. Dimensions: 133 x 72 x 25 (h x w x l) mm. Power source: 9V internal battery or 12-30V DC, 20mA. Oscillator: 700Hz nominal better than 0.01dB stability. Output: +4dBu or +6dBu, 2.5 kohm load, line -46 dBu, 2.5kohm load, (50 dB below +4 dBu), microphone -10dBV, unbalanced. The bottom panel houses the battery compartment which has an output level calibration trimmer, and a switch to set the balanced line output to either +4dBu or +6dBu. A recessed toggle switch switches between battery power or the external coaxial, power inlet connector. The upper panel has one RCA (phono) connector providing the unbalanced output and a female XLR for the balanced microphone/line level output. The front panel has a button to switch between microphone or line-level for the balanced output and LED indicators for 'power on' and 'low battery'. The unbalanced output provides a -10dBV signal suitable for consumer equipment. There are two outputs The balanced output may be switched to provide either microphone or line level and give the same output with microphone preamplifier inputs above 200 ohms. This has an oscillator operating at 700Hz the oscillator output is compared against an internal temperature-stable reference in a gain-controlled loop that adjusts the final output level with stability suited to accurate bench top audio testing.
![stereo test tone generator stereo test tone generator](https://images.wondershare.com/filmora/article-images/onlinetonegenerator-online-tone-generator.jpg)
![stereo test tone generator stereo test tone generator](http://www.solorb.com/elect/stereoosc/stereoosc2.jpg)
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