Studio Technologies ISS - Manual (Page 9)

Issue 3, June 1990 ISS User Guide
Page 10 Studio Technologies, Inc.
ISS
ISS Remote Control Enabled: This contact
closes (shorts) when a Remote Control
Enable condition is in effect. This contact
gives acknowledgment of a valid Remote
Control Enable condition.
ISS Simulating from Left: This contact
closes (shorts) when the ISS is in the simu-
lating from the left channel mode. This
contact closes any time the ISS is simulat-
ing from the left channel, whether due to
a Remote Simulate from Left command,
a command from the front panel controls,
or a command from the Recognition Card.
ISS Simulating from Right: This contact
closes (shorts) when the ISS is in the simu-
lating from the right channel mode. This
contact closes any time the ISS is simulat-
ing from the right channel, whether due to
a Remote Simulate from Right command,
a command from the front panel controls,
or a command from the Recognition Card.
Polarity Correction Taking Place: This con-
tact closes (shorts) when polarity correction
is taking place. You may want to let this
contact control an audible alerting device
in master control, a tape room, etc. The
audio source may need to be corrected,
or at least marked to show that a polarity
reversal is present.
Polarity Correction Function Disabled: This
contact closes (shorts) when a Remote
Polarity Correction Function Disable condi-
tion is in effect. This contact acknowledges
a valid Polarity Correction Function Disable
command.
Configuring and Installing the Circuit
Cards
Once the connections have been made, the
cards are ready to be configured. Do not
remove or insert any of the cards with the
mainframe power on. Do not “hot” install or
remove the cards! We will be working with
the cards in the order in which they are
housed in the cabinet: left to right, when
viewed from the front.
Mainframe card position 1 is on the left side
(viewed from the front); card position 9 is
on the right side.
The ISS mainframe is shipped with the
cards installed and the ribbon cable bus
attached. If you haven’t done so already,
carefully remove the ribbon cable bus from
all the cards. The connector on the front of
each card has latches that must be opened
for the ribbon cable bus connector to be
removed. Don’t fear the ribbon cable bus!
It is fast, reliable, and easy to work with.
Once you are used to it, you’ll like it!
I/O Card: The ISS is designed to accept
nominal audio signal levels of 0, +4, or
+8dBu. The desired input and output levels
must be set using the two switches located
on the I/O Card. Remove the I/O Card from
mainframe position 1 (the far left position
when facing the front of the mainframe).
The INPUT LEVEL switch selects the nomi-
nal line input level for both channels. The
OUTPUT LEVEL switch sets the nominal
output level. Set these switches to match
your broadcast facility’s desired nominal
operating level. The A position corresponds
to 0dBu operation, the B position to +4dBu,
and the C position to +8dBu. The nominal
input and output levels do not have to be
the same. If input loading is required, refer
to the Technical Notes section of this
manual. After setting the switches, and
possibly installing load resistors, install the
card back into mainframe position 1. Re-
member, do not install this or any card
when the mainframe power is on.