Atec ATS-1A, ATS-1DD User Manual

Testing for Optimal Results

ATS-1

Audio Precision Quality in a Low-Cost, Stand-Alone Test Set

Unmatched Value

System replacement for obsolete equipment:

HP8903B emulation mode over HPIB (GPIB)

Unparalleled Precision

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 broad cast, 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 af fordable as lower-performing test sets.

Analog Only or full Dual Domain—Analog and Digital

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.

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

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 do main, 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. Se lection of analog and digital inputs is clearly indi cated on the front panel with LED legends. ATS-1 makes graphs of

swept measure ments in real time

on the high contrast back-lit LCD display, including both frequency and amplitude sweeps. Hard copy high-resolution graphs,

compact screen-sized graphs or tabular data listings can be made from your ATS-1 to la ser or ink jet printers at the touch of a button. Bargraphs can display measure ments 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

used, the setting knobs and buttons also provide a con venient human interface for scrolling display cursors and for entry of other set tings 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.

Full Range of Analog & Digital Testing Facilities:

ATS-1 Dual Domain provides complete and parallel measurement capabilities for both analog and digital audio signals. Measure

ments common to both domains include:

Amplitude, Noise, Level (2 channels simul taneously), 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 ana log generator supplies a full +30.17 dBu (+29.5 dBm into 600 W) at selectable (50 W, 150 W or 600 W) source imped

ances. 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 in put 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 an alog generator amplitude) is useful for compression threshold measurements or rapid response sweeps at several different absolute levels, as well as for input to out put gain/loss measurements. 600 W Analog Input Terminations are indi vidually switchable for each channel of the analog analyzer.

+ 5 hidden pages