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Model 4010 Tone Remote System Adapter
High Level Guard Tone Timing
The high level guard tone (HLGT) duration has a standard setting of 120 milliseconds
when the channel OPT switch is in the OFF position. The HLGT duration may be selected
in the system configuration when the OPT switch is in the ON position.
Notch Filters
There are four guard tone notch filters on the adapter to filter out the 2175 Hz tone from
the select and unselect speaker audio, the transmitted microphone audio and the patching
audio. The microphone and patching filters have jumpers to disable the filter. The default
settings for the jumpers on the Tone Remote Board are to be in the IN position.
shows the jumper positions for the MIC and Patch notch filters.
Table 20: Notch Filter Jumpers on the Tone Remote Board
The notch filtering only applies to incoming audio. Although the output does not notch
any guard tone frequencies that may be present, a third party notch filter can be used.
Audio Delay
The Tone Remote with Audio Delay Board (950-9922) has an additional feature, which
allows for audio delay in both the Patch Bus and the MIC Bus for up to a maximum of 1.0
second.
The audio signals between the console channels that are connected together in a patching
mode (Patch Bus) may be time delayed to compensate for the channel key-up time. The
audio from the dispatcher (MIC Bus) may also be delayed. The two delays can be
independently selected (via jumpers) and the audio delay time can be set to 0.25, 0.50,
0.75 or 1.0 second. (See
). The default setting for the delay period is 0.75 seconds.
Jumper
Position
Status
JP6 (MIC)
IN
OUT
Enable notch filter
Disable notch filter
JP7 (Patch)
IN
OUT
Enable notch filter
Disable notch filter