signal present. However, if you select a video input connected to a device that happens to
be “Off” (video games, computers, etc.), the IntelliControl will be fooled into thinking that
the television is “Off”, when it is, in fact, “On”. Test to be sure. If the “Video” or “Monitor”
output is not reliable, use an APC-2 to current sense and provide 12V sync.
Testing Light Sensing
Make sure that some portion of the front panel display dims when the component is turned
“Off” with an IR command. If a product were to be manufactured with a display that simply
changes color, light sensing sync would not be reliable and an APC-2 or IPC-6 current
sensor should be specified.
Testing Current Sensing
Make sure that the APC-2 reliably senses the difference between “Standby” and “On”. The
component must have a 30 watt difference between “On” and “Off” (or “Standby” and
“On”) to be reliable. If the current difference is less than 30 watts, the IPC-6 Current
Sensing Power Manager or the LS-1 Light Sensor should be specified. The IPC-6 can
sense a 3-watt difference between “Standby” and “On”.
Testing a Component’s Control Voltage Output
The OTI-512 voltage converter outputs a 12V DC voltage whenever any voltage between
3V and 30V AC or DC is output from the component. Make sure that the component’s
voltage output reliably turns on and off in sync with the IR commands. Some components
have voltage outputs that are only present when a component is in a particular mode of
operation. This will cause the system to get out of sync if it happens to be in another
mode. Use a voltage that is present in all modes of operation and is not present when the
component is “Off”, or simply specify another means of syncing the device.
Testing Dual Zone Preamp/Receivers
Most dual zone preamp’s switched outlets are not able to provide reliable sync for just the
Home Theater zone (unless it only switches on when the “Theater” zone is active and not
when “Zone 2” is active). Because of this, it may not be possible to sync the receiver using
a 12V DC wall adapter. Instead you must resort to using dual zone receivers with separate
“On” and “Off” commands for the “Main” and “Second” zones, configurable control voltage
outputs, or simply use two separate receivers. An LS-1 Light Sensor may be used if there
is a way to detect when the Home Theater zone is on independent of the Second Zone.
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