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External microphones
This optional external microphone is intended for use with the digital voice recorders (DVR) (except model A) released not earlier March 2002, which have a socket for optional accessories.
There are four models of external microphones:
-Amplifying external microphone
-External microphone with AGC and compressor (increases dynamic range and improves recording quality in operating modes using compression)
-External microphone with AGC
-External microphone with compressor
Amplification:
- Amplifying external microphone: +10 dB
- External microphone with AGC and compressor:-30… +10 dB (depends on the signal strength)
- External microphone with AGC: -10…-15 dB
- External microphone with compressor: ±6 dB
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