KZ - 501D Receiver Sensitivity Microphone Monitors Sound Pickup IP Camera DVR Dedicated CCTV Accessories

KZ - 501D Receiver Sensitivity Microphone Monitors Sound Pickup IP Camera DVR Dedicated CCTV Accessories

Product features:
- The sensitivity is adjustable
- Small audio pickups
- Special import preamplifier chip
- High sensitive degree of monitoring
- Waterproof microphones tiny low noise high fidelity
- Acute protection power supply voltage regulator circuit

Audio pickup wiring methods:
Wiring: Red Line: 12V positive power; black line: power negative / negative signal, power and signal common; Green Line / White Line: Audio signal output (Line Out).
Kanazawa audio pickups uniform use DC12V DC power supply. DC power supply is (Transformers), generally consists of a transformer, rectifier diodes, filter capacitor, and an integrated voltage regulator. Not switching power supply!

Audio pickup wiring:
Audio pickup wiring in the end what is the most appropriate use of the cable? Depends on the distance to the recording equipment pickups, the distance is short, you can pickup ordinary telephone lines, cable to transmit the signal is no problem. If the distance , complex environment, surrounded by such a signal transmitter or other wireless communication device, you should use shielded cable, recommended RVVP2 * 0.5 above line, the principle is farther away from the line should be used more crude. Audio pickup power supply mode generally used on-site, to ensure adequate power Note:. The audio pickup wiring is best to use a separate cable, do not use the same cable and AC power, such as strong, as well as far away from transformers, rectifiers and other strong electromagnetic interference lighting equipment, to avoid current interference.

Audio pickup installation location options:
Audio pickup can be mounted on the ceiling ceiling installation, you can also hang on the wall side of the installation. Conversation area as close to the installation location, so better audio reception!

Audio pickup noise, noise, interference exclude:
First, it depends on what kind of noise, this is a problem, and then to solve the problem.
Usually divided into: A: ambient noise, B: audio noise pickup itself, C: interference noise, D: current noise, E: sound audio pickups, F: VCR and acquisition card itself is the problem.

Solution:
1. Environmental noise is unavoidable, you can choose a better audio pickups with noise reduction features, such as digital noise reduction audio pickup Kanazawa, this can be a good filter ambient noise!
2 audio noise pickup itself, this depends on your choice of audio pickups, ordinary cheap audio pickups certainly noise, good audio pickup selection effect is very important!
3. Interference noise, the points are many, such as cable receives interference, or AC interference, which can be part of the solution by using shielded wire, but not entirely ruled out, you can also use Kanazawa line interference, low cost, good effect.
4 Do not use a power supply with a switch, use the filter regulator 12V power adapter. When wiring is best to use a separate cable, do not use the same trunking and other strong AC power, while far away from transformers, rectifiers and other strong electromagnetic interference lighting equipment!
5 Check whether the audio and audio pickup listening distance when used too close, try not to be tested in the same room. Due to the high sensitivity of the audio pickup, stereo sound pickup microphone to the audio feedback will inevitably lead to self-excited whistle sounds, this is a normal physical phenomena. You can use the same room listening headphones.
6 VCR problems are many, some manufacturers are not concerned about audio quality, resulting in poor sound after recording, acquisition cards also poor. Such problems arise, the best choice Kanazawa A15-AUDIO intelligent optimization of this model of digital audio pickup, recording the effect is very good!