Qvis IAPOLLO HDRT HD, User Manual

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When you are using pc-type monitor please pay attention to the following points:

To defer aging, do not allow the pc monitor to run for a long time.

Regular demagnetization will keep device well maintained.

Keep it away from devices that produce strong electromagnetic interference.
Using a TV as video output device is not a reliable substitution method. You also need to reduce
the working hours and control the interference from the power supply and other devices. The low
quality TV may result in device damage.
3.6 Connecting Audio Input & Output, Bidirectional Audio
3.6.1 Audio Input
These series of product
’s audio input port adopt a BNC port. Due to high impedance of audio
input, please use active sound pick-up. Audio transmission is similar to video transmission. Try to
avoid interference, dry joint, loose contact and it shoul be kept away from high tension current.
3.6.2 Audio Output
The audio output signal parameter is usually over 200mv
1KΩ (BNC). It can directly connect to a
low impedance earphone, active sound box or amplifier-drive audio output device.
If the sound box and the pick-up cannot be separated spatially, it is easy to arouse squeaking. In
this case you can adopt the following measures:

Use better sound pick-up with better directing property.

Reduce the volume of the sound box.

Using more sound-absorbing materials in decoration can reduce voice echo and improve
acoustics environment.

Adjust the layout to reduce happening of the squeaking.
3.7 Alarm Input and Output Connection
Please refer to the following sheet for alarm input and output connection. There are two alarm
input types for you to select: normal open (NO) and normal close (NC).
1. Alarm input
a. Please make sure the alarm input mode is grounded alarm input.
b. Grounding signal is needed for alarm input.
c. Alarm input needs the low level voltage signal.
d. Alarm input mode can be either NC (normal Open) or NO (Normal Close)