Introduction, cont’d
ISM 824 Integration Scaling Multiswitcher • Introduction
1-4
Balanced or unbalanced stereo or mono audio inputs are made on eight 5-pole
captive screw connectors, numbered 1 through 8.
Individual audio input gain and attenuation can be displayed and adjusted from -
18 dB to +24 dB via the front panel, Ethernet, or RS-232/RS-422 control.
Output volume can be displayed and adjusted as desired through a range of
0 to 64 dB, in 1 dB steps via the front panel, Ethernet or RS-232/RS-422 control.
In addition, all audio settings can be set to the same desired input and output
setting via the Windows Control Program. Both input gain and output volume
adjustments are available at the front panel, by RS-232/RS-422 control, or Ethernet
connection.
Serial control of the switcher by RS-232/RS-422 is achieved by connecting a host
device such as a PC or control system to the rear panel 9-pin D connector, or the 2.5
mm mini stereo jack on the front panel (only RS-232 control). This allows the user
to control and congure the multiswitcher using Extron SIS™ commands or the
ISM 824 Windows Control Program. See chapter 4, “SIS™ Programming and
Control”, and chapter 5, “ISM 824 Software”, for details.
An Ethernet connection is made using the RJ-45 connector on the rear panel.
The ISM 824 features HDTV 480p, 576p, 720p, 1080i, and 1080p outputs.
The switcher has 16 user defined presets, allowing the user to save the current
video and audio tie (input x to output x) as an I/O preset to any one of 16 preset
memory addresses via the front panel. Presets 1 through 8 are assigned to the
input buttons, and 9 through 16 are assigned to the output buttons. See chapter 3,
“Operation and Setup”, for details.
The switcher is housed in a rack-mountable, 3U high, 17.5" wide, metal enclosure
and uses an external 100 VAC to 240 VAC, 50/60 Hz, 65 watt power supply.
Denitions
The following terms are used throughout this manual:
Tie — An input-to-output connection.
Set of ties — An input tied to two or more outputs. An output can never be tied
to more than one input.
Configuration — One or more ties or one or more sets of ties.
Current configuration — The configuration that is currently active in the
switcher (also called configuration 0)
Global memory (I/O) preset — A configuration that has been stored. Up to
16 global memory presets can be stored in memory. Preset locations are
assigned to the input buttons and output buttons. All presets can be selected
from the front panel, or by serial port or Ethernet control, for either saving or
retrieving. When a preset is retrieved from memory, it becomes the current
configuration.