Chapter 8: Audio Module, Rev 1.1
Microphone installation sample 1 steps:
1. Open the <vdrparams.ini> file from the Windows desktop
2. Scroll to the [AUDIO] section and edit the following settings to reflect the ship
configuration:
Parameter Typical Value Remarks
NumChannels 5
ChannelEnabled1 1 0 = disabled, 1 = enabled
ChannelEnabled2 1 0 = disabled, 1 = enabled
ChannelEnabled3 1 0 = disabled, 1 = enabled
ChannelEnabled4 1 0 = disabled, 1 = enabled
ChannelEnabled5 1 0 = disabled, 1 = enabled
ChannelEnabled6 0 0 = disabled, 1 = enabled
ChannelEnabled7 0 0 = disabled, 1 = enabled
ChannelEnabled8 0 0 = disabled, 1 = enabled
NumOutputChannels 4
Software mixing - provide list of channels to mix (max. 2 per
channel) only 1
st
4 go to the FRM
OutputChannel1 1
OutputChannel2 2
OutputChannel3 3,4
OutputChannel4 5
OutputChannel5 5
Because the NumOuputChannels field has been specified as
4, anything beyond the OutPutChannel4 field is ignored
OutputChannel6 6
OutputChannel7 7
OutputChannel8 8
numVHFChannels 1 Default is 1
VHF-Channel1 1
VHF-Channel2 0
MikesOnMixer1 2 0 to 2; this refers to the first mic channel. Here it is Channel 2.
MikesOnMixer2 2
MikesOnMixer3 1
MikesOnMixer4 2
MikesOnMixer5 0
MikesOnMixer6 0
MikesOnMixer7 0
MikesOnMixer8 0
DetectionThreshold1 450 The test signal RMS must exceed this to be declared detected
DetectionThreshold2 450
DetectionThreshold3 475
DetectionThreshold4 475
DetectionThreshold5 445
DetectionThreshold6 445
DetectionThreshold7 700
DetectionThreshold8 700
ChirpLength 50 Mic self-test signal length, in ms (100 ms max)
MikeRetryInterval 3600 In seconds
MaxMikeRetrys 11 Retry this many times before declaring failure
ControlMode 2 1 = hold 1 of 3 bits high ; default is 1
2 = set bits 1 and 2 to binary count and hold bit 3 high
Table 8-7 – Parameters for Microphone Installation Settings - Sample 1
3. Save the changes and close the <vdrparams.ini> file
4. If the VDR_Record application is recording, it must be stopped and recording restarted
for the changes to take effect.
In the example above, Audio Module Channels 3 and 4 (containing input connections for
microphones 3, 4, and 5) are mixed on OutPutChannel3.
VDR-100G3/G3S Installation Manual 06/10/2008
8-40
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