Features - Alphatech (en)

Features

• The Basic unit is powered from telephone line only.
  

• The unit includes acoustic part (microphone and speaker – same dimension as NLLW)
  

• Programming is either remotely by phone (DTMF tones) or by PC (cable on USB port) or remotely from PC (by BlackBox modem).
  

• Indication light ( by connected LEDs) – yellow, indication of dialling the number, green,indication confirm of call.
  

• Possible connect pushbutton with switch-on (NO) or switch-off (NC) contacts
  

• Possible connect two pushbuttons - one (BTN2 – in cabin) with blocking second (BTN1 – more function) without function blocking (BLK)
  

• Input BLK for blocking dial from button BTN2
  

• Special mode with autoblocking function (from move of cabine door)
  

• The time of each button activation is adjustable from 0,5 sec to 39 sec
  

• Inputs on Basic unit is galvanic connect with trelephone line, inputs with note „Isol.“ is isolated and activate is possible only by external voltage
  

• The possibility up to 5 communicators paralel from one telephone line
  

• The possibility up to 3 communicators paralel from „SwitchBoard“ for communication with machine room
  

• Automatic control of system functionality - Service call (automatic calling to preprogrammed numbers in set time period from 1 to 59 days)
  

• Possible switched on acoustic tick to the conversation for speech recognition
  

• Adjustable parameters of tone dial, length of Flash and Pause
  

• Adjustable parametres of tones detector amd parametres of acoustical signalization
  

• Elektronical loudness settings ( without neccessity open the unit)
  

• The possibility to programm 6 numbers ( 16 digits – includes  *,#,Pause,Flash) with note if you want use confirmation or not .The numbers are progressivelly dial.
  

• Memory on two last dial telephone numbers
  

• Technical call with 5 state (1. fitter in cabin, 2. change state of inputs on Option module, 3. error cal from not move of cabin - Option module, 4. pushbutton is permanent pressed, 5. acoustic test is bad)
  

• Automatic test of acoustic path (microphone and speaker). Switchtable by parameter.
  

• Automatic test of permanent activate button (BTN2)
  

• Possibility call to the machine room with SwitchBoard
  

• Posibility set  mute for service, technical and counter calls
  

• Possible expand Basic module with Option module, Option module is galvanic isolate from telephone line and powered only from 12/24V power supply:
  

Include 3 (8)* universal inputs.
Include 3 (4)* universal outputs (open collector).
Special input INP3 for connection to door contact for count of move the cabin.
Special relay otput for connection parallel to button of lift system for activate move of cabin.
Two outputs for activate announcement message to cabin and to the telephone line (special otputs for Floortalker activate).

* - two version of HW Option module

Acoustic path setting
The principle of setting acoustic paths:  
There are three parameters 71, 72 and 73. Interaction of these parameters influences the audio performance in various  environment conditions.  

• in a quiet environment, the parameters 71,72,73 are set to value 7  
  

• in an environment where there is a strong ambient noise at the communicator and quiet environment at the phone, it is necessary to reduce  the microphone ´s gain (for example the parameter 72 = 1-3) and also change the ratio of the parameters 71/73  in a way that value 73 increases (for example the parameter 73 = 11-15) and the value of 71 parameter descreases (71 = 2-4)
  

• in an environment where there is a strong ambient noise at the phone and a quiet environment at the communicator. In this case we keep the value of parameter 72 = 7 and 73 and 71 parameters should be  set as follows, for example:   parameter 71 = 11-14 and 73 = 2-4
  

The principle of setting of the parameters is the following:
the  signal from the microphone is amplified by the sum of parameters  72+71 = volume of microphone  and the signal to the speaker is amplified by the sum of parameters  71+73 = volume of speaker. Switching the direction of the ratio is evaluated by parameters 73/72 ratio (threshold).  

• If the value of the parameter 72 is greater than the value of the parameter 73, then we are favoring the direction from the microphone. This is for cases when the audio direction to the phone is being interrupted.  
  

• If the parameter 73 is greater than  the parameter 72, then we are favoring the direction to the speaker. This is for cases when there is an interrupted sound in the speaker of the door phone communicator.