Testing for Optimal Results
ATS-1
Audio Precision Quality in a
Low-Cost, Stand-Alone Test Set
Unmatched Value
ATS-1: Audio Precision Quality in a Stand-Alone Package
The ATS-1 family of audio test instruments—at home on the bench, or in a test rack under GPIB control.
With thousands of units sold, you’ll find the ATS-1 family of audio analyzers in operation around the world in maintenance, engineering and production facilities. Whether in broadcast, communications, bench or production use, ATS-1 offers a complete easy-to-use audio test set ready for almost any environment. With twelve different measurement functions selectable at the push of a button, ATS-1 is comprehensive while remaining user-friendly. Its popularity is no less due to its outstanding performance specifications; yet ATS-1 is as affordable as lower-performing test sets.
Analog Only or full Dual Domain—Analog and Digital
System replacement for obsolete equipment:
HP8903B emulation mode
over HPIB (GPIB)
Unparalleled Precision
Low Distortion
Analog System THD+N 80 kHz BW –92 dB
Digital Distortion THD+N –140 dB
High Analog Bandwidth
Signal Generation to 120 kHz
Low Noise
22 Hz–22 kHz < –114 dBu
A-weighted < –118 dBu
Wide Input Voltage Range
Input Range 80 mV–250 V in 10 dB steps
Flat Response
20 Hz–20 kHz ±0.05 dB
Low Crosstalk
Input < –120 dB
Output < –110 dB
Low Jitter
Generator < 0.8 ns
Analyzer < 1.6 ns
The ATS-1 
ATS-1 Access includes comprehensive analog generation and measurement, with two outputs and two inputs. Easy-to-set-up sweep capability produces graphs of frequency response, distortion vs. frequency and even amplitude sweeps. Non-volatile storage of up to 30 tests allows easy one-button recall of your favorite test setup. Connect ATS-1 to a compatible printer and produce reports incorporating high-resolution graphs. If you work with digital audio, the ATS-1 Dual Domain® model adds AES3/SPDIF audio and interface measurement capabilities to the comprehensive analog capabilities of the ATS-1 family.
Analog+Digital+AES3/SPDIF: the ATS-1 Dual Domain
ATS-1 Dual Domain® is a comprehensive audio test set for both analog and digital audio, as well as for generation and measurement of AES3/SPDIF digital interface characteristics such as jitter. Like our 2700 Series family of instruments, ATS-1 Dual Domain features true dual domain architecture. Digital signals are generated and measured purely in the digital domain, resulting in the extremely low distortion and noise residuals necessary for making useful digital audio measurements.
Performance, Measurement Power, and Ease-of-Use
Easy to Use
Measurement functions are simply selected from the front panel. Just press a button
and make the measurement. Selection of analog and digital inputs is clearly indicated on the front panel with LED legends. ATS-1 makes graphs of swept measurements in real time
on the high contrast back-lit LCD display, including both frequency and amplitude sweeps. Hard copy high-resolution graphs,
used, the setting knobs and buttons also provide a convenient human interface for scrolling display cursors and for entry of other settings and data.
Stereo:
ATS-1 Dual Domain is a true two channel instrument. Both analog and digital level functions measure both inputs simultaneously. Phase and level ratio measurements are also available.
compact screen-sized graphs or tabular data listings can be made from your ATS-1 to laser or ink jet printers at the touch of a button. Bargraphs can display measurements ranging from AC mains power line distortion to digital interface error rate …and nearly everything in between. Sepa-
rate buttons and knobs provide independent control of frequency and amplitude. The buttons provide large and medium steps (decade and 1/3 octave steps for frequency, 10 dB and 1 dB for amplitude), with knobs for finer resolution. When not otherwise
Full Range of Analog & Digital Testing
Facilities:
ATS-1 Dual Domain provides complete and parallel measurement capabilities for both analog and digital audio signals. Measurements common to both domains include:
Amplitude, Noise, Level (2 channels simultaneously), Frequency, Phase, THD+N, SMPTE/DIN, IMD, Crosstalk and Level Ratio. Standard A-weighting, CCIR 468, and LP/HP filters are included in both domains. RMS and quasi-peak (CCIR 468) detectors are available in both domains.
Analog Performance:
The low distortion transformer-coupled analog generator supplies a full +30.17 dBu (+29.5 dBm into 600 ) at selectable
(50 , 150 or 600 ) source impedances. Extremely low analyzer noise and residual distortion support measurement of high performance digital devices.
Analog Convenience Functions:
In addition to the above measurements, the analog GEN LOAD function measures the input resistance of your device at any frequency you choose and makes swept impedance measurements (including loudspeakers).
AC MAINS CHECK measures the voltage, frequency and distortion of the power line without hazardous direct connections.
BARGRAPH display in AC MAINS CHECK function provides a visible history of maximum and minimum mains voltage excursions.
The dBg unit (dB referred to the present analog generator amplitude) is useful for compression threshold measurements or rapid response sweeps at several different absolute levels, as well as for input to output gain/loss measurements.
600 Analog Input Terminations are individually switchable for each channel of the analog analyzer.
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