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68 C2629M-A (6/07)
Appendix C: Connecting Audio Devices
This appendix describes how to connect audio devices to the DX8100. Before using the audio recording features of the DX8100, consult the
applicable laws regarding audio surveillance recording for your location.
SETTING UP STANDARD AUDIO INPUTS
The DX8100 provides two standard audio line in and microphone inputs that support 2-channel (right/left) audio recording. Use a miniature phone
plug to connect audio devices to the DX8100. For information about configuring the DX8100 to record audio, refer to the DX8100 Operation and
Programming Server Application Software manual or online Help system.
SETTING UP OPTIONAL AUDIO CONNECTIONS
If more audio inputs are required, the DX8100 supports an 8-channel (DX8108-AUD) and 16-channel (DX8116-AUD) audio expansion option.
Expansion audio inputs correspond to video inputs as follows:
• An 8-channel accepts up to 8 audio inputs.
• A 16-channel DVR accepts up to 16 audio inputs.
• A 24-channel DVR accepts up to 24 audio inputs.
• A 32-channel DVR accepts up to 32 audio inputs.
Audio and video inputs are configured in a one-to-one relationship. For example, audio input seven corresponds to video channel seven.
The DX8100 accepts up to 32 individual monaural audio inputs. Each input is designed to receive a line-level, analog audio signal that is sampled
at a rate of 48 kHz (16 bits) by the DX8108-AUD’s digital analog converters (DAC). To minimize the amount of storage required to store audio
data, the audio stream is down-sampled to 8 kHz (8 bits) for storage and playback.
Audio input is provided through an audio cable consisting of eight RCA connectors wired to a 26-pin breakout connector.
The 26-pin connector connector plugs into the 26-pin Sub-D socket on the capture card. Depending on your system’s configuration, either one or
two breakout cables will be required to connect the DVR to an audio system.
1. Connect the 26-pin audio breakout connector to the 26-pin Sub-D socket on the capture card to provide 8 or 16 individual audio inputs. Refer
to
Figure 91.
IN1 IN2 IN3 IN4 IN5 IN6 IN7 IN8 IN9 IN10 IN11 IN12 IN13 IN14 IN15 IN16
OUT16OUT15OUT14OUT13OUT12OUT11OUT10OUT9OUT8OUT7OUT6OUT5OUT4OUT3OUT2OUT1
ALARMINPUTS RELAYOUTPUTS
12245678GND
9 10111213141516
12245678GND
9 10111213141516
AUDIO
(PREAMP)
OPTIONAL AUDIO INPUTS 1-8
FOR 8 AND 16 CHANNEL DVRS.
Figure 90. Audio Connector Installation