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audio level interpreter PCBs for analog or AES/EBU digital audio

ALI53A.jpg (4885 bytes) ALI53D.jpg (4572 bytes) ALI106A.jpg (6386 bytes) ALI106D.jpg (5884 bytes)
53 segments
analog

ALI-53A
53 segments
digital

ALI-53D
106 segments
analog

ALI-106A
106 segments
digital

ALI-106D

audio level interpreter PCB

Accepts and interprets analog or AES/EBU digital audio signals and generates a range of audio parameters for display.
VU, PPM, Loudness, Peak Hold, Correlation/Phase, and combination displays are available.

ALI's generate a serial data stream then sent to the DDV display driver boards.

The ALI-53xx and ALI-106xx use DSP engines programmed to output display data for the DDV-53 or -106 display drivers (one pair of audio channels). The "A" versions (e.g. ALI-53A) have analog input; the "D" versions are AES/EBU input.

Various "ballistic" and scale characteristics are possible, including multiple simultaneous display modes (e.g. a PPM "dot" over a VU "bar"). A program for displaying three different parameters simultaneously with separate red, yellow, and green segments is under development. Input modules for the 26 and 25-segment bargraphs are under development.

The modules require only +5VDC power. Interconnection with the DDV-53 or -106 display driver modules requires only simple serial data and clock lines (and optional brightness control line.).

analog input specifications digital input specifications
input impedance 27 kOhm, balanced input termination 110 ohm balanced / 75 ohm
available input connectors "phoenix" or XLR unbalanced or unterminated (open)
input level for ‘0’ indication +4 dBu (at default calib.) available input connectors "phoenix", XLR or BNC
maximum Input +19 dBu (at default calib.) sampling rate 32 - 48kHz, auto-detect

sell also: bargraph drivers / mounting PCBs

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