Studio Technologies ISS - Manual (Page 11)

Issue 3, June 1990 ISS User Guide
Page 12 Studio Technologies, Inc.
ISS
can be turned on at the same time. Switch
position 1 controls if L=R is recognized as
mono. Place switch position 1 to ON if you
want a mono signal on both left and right to
be recognized as mono. Switch position 2
controls if a signal on the left channel only
will be recognized as mono. Place switch
position 2 to ON if left only is to be recog-
nized as mono. Switch position 3 controls
if a signal on the right channel only will be
recognized as mono. Place switch position
3 to ON if right only is to be recognized as
mono. Remember that all three modes can
be, and in most cases will be, turned on at
once. Switch position 4 is not used and
should be left in the OFF position. Confirm
that the single turn trim potentiometer R10
is set to the 50% rotation point, i.e., halfway
between fully clockwise and fully counter-
clockwise. It is the only trim pot on the
Recognition Card. The pot was preset at
the factory, but a visual double check is
a good idea. This card is now installed in
card position 6.
Mode Select Card: Remove the Mode
Select Card from mainframe card position
7. One switch must be set on the Mode
Select Card. This switch determines the
type of remote control signals that are
going to be applied to the four remote
control inputs: Remote Control Enable,
Remote Simulate from Left, Remote Simu-
late from Right, and Remote I/O Bypass. In
the CONT position, continuous signals will
be applied. In the PULSE position, momen-
tary signals will be applied. If remote control
signals are not going to be connected, the
switch should be set to the CONT position.
This card is now installed in card position 7.
Card Position 8: Card position 8 is reserved
for an option, the Tone Detection Card. This
card places the ISS in the electronic bypass
mode if a continuous, specific frequency
is detected. If your installation includes
this card, refer to the separately supplied
documentation for complete installation
instructions.
Card Position 9: Card position 9 is not
utilized at this time.
The Ribbon Cable Bus
Once the cards are configured and rein-
stalled, the ribbon cable bus can be in-
stalled, linking all the cards together. Start
with the I/O card, located in card position 1,
and work to the right. Orient the ribbon
cable bus so that the colored stripe, usually
red or blue, that indicates pin 1 will mate
with the top pins of the card connectors.
Mate the left most ribbon cable bus connec-
tor with the I/O Card connector. A mechani-
cal key on the I/O Card prevents the ribbon
cable bus from being installed upside
down. Repeat this process for the remain-
der of the cards. Use the latches to secure
the ribbon cable bus connectors to the card
connectors.
For future reference note that the ribbon
cable bus can be removed or attached with
the mainframe power on or off. The ribbon
cable bus carries only audio and logic
signals. No damage will occur if one or
more of the cards are operated with their
respective ribbon cable bus connectors
disconnected. Remember that the cards
themselves cannot be “hot” plugged into,
or pulled out of, the mainframe.
Securing the Front Panel
Carefully place the front panel over the front
of the mainframe and secure using the four
screws.