Specifications

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The JSD-60 is “automation friendly.” It features the standard DB25 parallel automation interface, an RS-232
(EIA232) interface, and Ethernet. The Ethernet interface accepts 5 simultaneous TCP connections to allow control
by a digital cinema server and other equipment while simultaneously being monitored over another TCP
connection.
The Graphical User Interface runs on Windows XP®, Windows 7®, and Windows 8® operating systems. It allows for
complete system configuration, monitoring, and firmware updates over USB, Ethernet, or RS-232. The JSD-60
graphical user interface simplifies installation by including sound pressure level measurement and automatic
equalization. System monitoring, control, and firmware update functions are also available on a standard web
browser.
The JSD-60 includes a precision 1/3 octave RTA that uses the filters specified in ANSI S1.11-1986. The JSD-60 also
does sound pressure measurements using the C-weighted filter specified in ANSI S1.4-1983. The RTA and SPL
meter can be used to equalize an auditorium manually or automatically.
The JSD-60 includes an automatic equalization feature (auto-EQ). Auto-EQ uses user-defined microphone
calibration files and standard or user-defined equalization curves to automatically adjust the graphic equalizer on
each channel.
The JSD-60 is also “diagnostic friendly.” The system logs the last 15,000 events (format changes, level changes,
internal temperature, loss of AES/EBU audio, etc.) to internal flash memory. Log data can be reviewed on the GUI
or the web interface. Current operational status, including selected format, fader level, and measured audio
output levels, is available on the GUI and on the web interface. The current status of the system is also available
over SNMP (Simple Network Management Protocol).
An optional plug-in module decodes Dolby Digital and DTS encoded content.
The HI and VI-N outputs are configurable on a per-format basis.
An optional crossover card supports biamp of three screen channels and provides two LFE outputs.
A user configurable mixer routes audio as required for the specific auditorium. Supported auditorium
configurations include 5.1, 7.1DS, 7.1SDDS, and drive-in.
4.2 Block Diagrams
The following simplified block diagrams assist the user in understanding the signal flow within the JSD-60. All input
sources are routed to the Input Mixer that routes a source to an output. An internal noise and tone generator is
available for testing and acoustic calibration of the sound system. The output stream contains the main fader, sync
and surrounds delays, equalizer, channel filter, and crossover with individual band delays and gain settings. The
hearing impaired (HI) and visually impaired - narrative (VI-N) outputs do not include an equalizer, channel filter or
crossover and are not affected by the main fader.