ACTi V21 - Manual (Page 9)

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Encoder Hardware Manual
9
Physical Description
V21 / V22
Item Description
1 Power LED Lights up when the device is powered on.
2 Serial Port
Activity LED
Lights up to when a serial device is connected to the
encoder.
3 Video In Activity
LED
Lights up when an analog encoder is connected to the
encoder.
4 Digital Input /
Output
Connector
Connects to digital input or output devices, such as an
alarm trigger, panic button, etc. Digital Input (DI) and
Digital Output (DO) devices are used in applications
like motion detection, event triggering, alarm
notifications, etc. See How to Connect DI/DO Device
to V21 / V22 on page 18 for information on how to
connect DI/DO devices to the encoder.
5 Audio Input /
Output
Connector
Connects to audio input and output devices, such as a
microphone with built-in amplifier, speaker, etc. See
Connecting Audio Devices (Optional) on page 22
for more information.
NOTE: The microphone must have a built-in amplifier.
Connecting an ordinary microphone will dwarf sounds
and will result in inaudible recording.