Product manual

EAP01 - Product Manual
The detection threshold level is adjustable as follows.
1. Configure Mode=LF and Level (dB)=–40, enabling the Router to detect the presence of the low
frequency surveillance tone that is generated by ASL microphones.
2. Clear any existing faults by pressing the FAULT CLEAR button on the system front panel.
3. Make sure that no fault is reported for the EAP01. Any fault reported by the EAP01 at this stage
should be cleared; see Section “6 Fault Finding” (page 34).
4. Raise the surveillance tone level slowly (1 dB step) from –40 dB until the “IPXX AUDIO INPUT” fault is
reported. Where XX is the Mic/Line input to which the EAP01 is connected.
5. Set the surveillance tone level to 4 dB below the level that caused the fault to be reported.
E.g. if a –18 dB level causes the fault, then set the surveillance tone level to –22 dB.
6. Make sure that no fault is reported for the EAP01.
5.3.3 Microphone Relative Output Gain
VAR4/12/20 Menu: ConfigurationÆSystemÆRouterÆInputsÆMic/Line
Æ<I/P #nn – input name>ÆFire MicrophoneÆAudioÆGainÆO/pGains
DAU/VAR8 Menu: ConfigurationÆSystemÆRouterÆInputsÆMic/Line
Æ<I/P #nn – input name>ÆFire MicrophoneÆAudioÆGainÆOutput
Possible values: –40dB to 0dB (1dB steps)
System default configuration: ‘0dB’
Normally all input gains will be set to ‘balance’ each of the inputs, and the output gain will be set to give the
required level at each output. However, if any input is desired to have a different gain for a particular output
or outputs, then these inputs can be given a different gain relative to each appropriate output. This is the
‘Relative Output Gain’ setting, and can be used to e.g. avoid feedback for a microphone which is located in
one of its output zones.
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• This setting is not required on Audio Control Units (ACU).
• Before carrying out this adjustment the input gains of all audio sources and the output gains
for all zones and other audio outputs must be set-up to ‘balance’ each input and output.
Ensure that the Relative Output Gain for each output is set to the default level (0 dB), and then for each
output in the system configure the Relative Output Gain as follows:
1. Disable any ANS for the output associated with the EAP01, by setting it to ‘Off’:
Menu: ConfigurationÆSystemÆRouterÆOutputsÆ<O/P #nn – output name>ÆANS
nn is the output number.
Note that to simplify this process the Router displays the output name, and that the output names may
have been changed to zone names in the ConfigurationÆSystemÆRouterÆOutputs menu.
Issue: 02 complete, approved
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