Automation By Mci - MCi JH-500 Series Manual

CENTERBAND FREQUENCIES of the eighteen Filter circuits are:
45 Hz 400 Hz 3.2 kHz
70 Hz
560 Hz 4.5 kHz
100 Hz
800 Hz 6.3 kHz
140 Hz 1.1 kHz 9.0 kHz
200 Hz 1.6 kHz 12.8 kHz
280 Hz 2.2 kHz 16.5 kHz
The Spectra-Vue option is completely compatible with the JH-500
Series Audio Desk. It is built into the Auxiliary module
without altering the functions of the module, and it receives
all of its power , from the standard Desk Power Supply.
AUTOMATION BY Mel
The MCI automation system for the JH-500 Series Audio Mixing
Desk will be released by late 1976. The circuitry and the
controls needed for full automation are built into the standard
Desk. Advanced design, coupled with the extreme flexibility of
this Desk allows the WRITE and UPDATE controls to be reduced to
just three simple pushbuttons per Channel for ALL FIVE AUTO-
MATED FUNCTIONS.
When CHANNEL GROUPING is used, three buttons can control the
whole group. These buttons are already built into the modules
and are labeled VCA WRITE, VCA UPDATE, and MUTE WRITE. The
buttons are momentary pushbuttons with latching circuits. An
LED located beside each button lights whenever the circuit is
active.
Two other features of this AUTOMATION SYSTEM contribute greatly
to ease of use:
1. A design breakthrough has achieved AUTOMATIC NULLING of
all automated controls. This is accomplished electronically
and results in an additional feature:
When VCA WRITE or VCA UPDATE is activated, The mechanical position
of the Fader is taken as ZERO, or NULL POINT.
(Whatever that position
may be).
When Updating, changes are read as differences from the
assigned ZERO POSITION.
Therefore the Faders can be used in the UPPER(and
more sensitive)
portion of their range when Updating - REGARDLESS OF THE LEVEL
BEING UPDATED.