
Description
This portable audio instrument is comprised of a precision audio oscillator, precision level meter and speaker.
The 700 Hz oscillator section features two outputs. The balanced XLR output is front-panel switch selectable for MIC or LINE level (pro level). The unbalanced output operates at -10 dBV (consumer). Output stability is suited to accurate bench top audio testing.The audio metering circuit features two inputs, an LED meter and a monitor speaker. The balanced input is front-panel switch selectable for MIC or LINE input (pro). The unbalanced input operates at -10 dBV (consumer). Either input may be used to feed the metering circuit. For balanced +4 dBu inputs, meter 0 dB = +4 dBu. For unbalanced inputs, meter 0 dB = -10 dBV. A front-panel volume knob controls the speaker level. The IN PHASE LED illuminates when the oscillator output and metering input are in phase (0 dB level or greater). The PT-AMG operates either from two internal 9 volt batteries or from an external 1 Vdc to 30 Vdc supply. Test leads and bench top support bracket are included. The balanced line levels (input and output) may be preset by the user to +4 dBu or +6 dBu.-
Features:
- Portable or Bench Audio Generator, Meter and Monitor
- Mic and Line-Level Audio Tone Oscillator with Metering
- Selectable Mic / Line-Level Input and Output
- Balanced and Unbal Connectorized Inputs/Outputs
- Operation from Standard 9 Volt Batteries or 4 Vdc
- +4 dBu or +6 dBu Precision Stable Reference Level
| Outputs (2): | XLR (front-panel selectable mic or line), Phono (consumer level) |
| Balanced Output Level (Selectable): Line: | +4 dBu or +6 dBu* (2.5 k load) |
| Mic: | -46 dBu (2.5 k load, 50 dB below +4 dBu) |
| Unbalanced Output Level: | -10 dBV |
| Oscillator Frequency: | 700 Hz nominal |
| Output Stability: | Better than 0.01 dB |
| Inputs (2): | XLR (front-panel selectable mic or line) Phono (consumer level) |
| Balanced Input Level (Selectable): | |
| Line: | +4 dBu or +6 dBu* |
| Mic: | -46 dBu (50 dB below +4 dBu) |
| Unbalanced Input Level: | -10 dBV |
| *Reference Level Preset: | Switch-selectable +4 dBu or +6 dBu |
| Power Requirement: | 9 V internal (2) or 12 to 30 Vdc external @ 45 mA |
| Ambient Operating Environment: | 0 degrees C to 50 degrees C |
This portable audio instrument is comprised of a precision audio oscillator, precision level meter and speaker.
The 700 Hz oscillator section features two outputs. The balanced XLR output is front-panel switch selectable for MIC or LINE level (pro level). The unbalanced output operates at -10 dBV (consumer). Output stability is suited to accurate bench top audio testing.The audio metering circuit features two inputs, an LED meter and a monitor speaker. The balanced input is front-panel switch selectable for MIC or LINE input (pro). The unbalanced input operates at -10 dBV (consumer). Either input may be used to feed the metering circuit. For balanced +4 dBu inputs, meter 0 dB = +4 dBu. For unbalanced inputs, meter 0 dB = -10 dBV. A front-panel volume knob controls the speaker level. The IN PHASE LED illuminates when the oscillator output and metering input are in phase (0 dB level or greater). The PT-AMG operates either from two internal 9 volt batteries or from an external 1 Vdc to 30 Vdc supply. Test leads and bench top support bracket are included. The balanced line levels (input and output) may be preset by the user to +4 dBu or +6 dBu.-
Features:
- Portable or Bench Audio Generator, Meter and Monitor
- Mic and Line-Level Audio Tone Oscillator with Metering
- Selectable Mic / Line-Level Input and Output
- Balanced and Unbal Connectorized Inputs/Outputs
- Operation from Standard 9 Volt Batteries or 4 Vdc
- +4 dBu or +6 dBu Precision Stable Reference Level
| Outputs (2): | XLR (front-panel selectable mic or line), Phono (consumer level) |
| Balanced Output Level (Selectable): Line: | +4 dBu or +6 dBu* (2.5 k load) |
| Mic: | -46 dBu (2.5 k load, 50 dB below +4 dBu) |
| Unbalanced Output Level: | -10 dBV |
| Oscillator Frequency: | 700 Hz nominal |
| Output Stability: | Better than 0.01 dB |
| Inputs (2): | XLR (front-panel selectable mic or line) Phono (consumer level) |
| Balanced Input Level (Selectable): | |
| Line: | +4 dBu or +6 dBu* |
| Mic: | -46 dBu (50 dB below +4 dBu) |
| Unbalanced Input Level: | -10 dBV |
| *Reference Level Preset: | Switch-selectable +4 dBu or +6 dBu |
| Power Requirement: | 9 V internal (2) or 12 to 30 Vdc external @ 45 mA |
| Ambient Operating Environment: | 0 degrees C to 50 degrees C |
Your home for all things pro audio—backed by expertise and experience. Connect with us today.
Your home for all things pro audio—backed by expertise and experience. Connect with us today.

