L'explication/l'anotation:Powerful broad-band apparata with antenna array and àóäèîâõîäîì. | For correction average
them and strong losses of hearing, including with pronounced the Phung.
La description détaillée de marque:Characteristic properties:
- the high reliability, secured by the technology application ïîâåðõíî
ñòíîãî assembling;
- two-cycle (push pull) output stage, providing ýêîíîìè÷íîñ
apparata Ti in case of high-power;
- the system availability of automatic gain control (antenna array), ïîçâîëÿþù
it to preserve the natural ratio of sounds of different loudness;
- separation controls on low and high frequencies, providing
high tuning accuracy of apparata;
- the possibility of mated business hour , allowing at the same time the All-Russian Association of blind people
accept as the conversation by telephone, and the environmental sounds, with the help
unefficient controller ÌÒ/Ò
- àóäèîâõîäà availability.
has following adjustments:
- gain control;
- unefficient controller telephone - ìèêðîôîí/òåëåôîí;
- unefficient tone control of âûñëêèõ frequencies;
- unefficient tone control of low frequencies;
- nonoperative adjustment of operation threshold of antenna array;
- switch òåëåôîí-ìèêðîôîí (Î-Ò-Ì)
technical characteristics (at standard of IEC 118-7/94 (2ññ is given)
maximal acoustic strengthening 64+/-4 decibel
restriction ÂÓÄÇ in case of completely switched off antenna array 17+/- 2 decibels
maximal output noise level 136 +/- 3 decibels
frequency range 0, 2-5 8 kHz
harmonic coefficient
typical 1%
maximal not more 5%
set out to input level of self noises not more 25 decibels
adjustment depth of acoustic strengthening no less than 50äÁ
depth of tone control of low frequency at frequency 300 kHz 15+/-2 decibel
depth of tone control of HF at frequency 4000 kHz 11+/-2 decibel
compression coefficient of antenna array no less than 8
response time of antenna array not more 10 incineration facilities
recovery time of antenna array not more 90 incineration facilities
consumption current not more 4 mitotic activities
type of power supply element 675 |
Les conditions de fourniture:
| Les prix: pour 21.12.2000 g pour itm |
Le prix de gross: 156.70 USD(USD)
Le prix de détail: 0.00 USD(USD) |
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