m3trc_eng (08.01.02)
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Kompetent für Elektroniksysteme
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Kompetent für Elektroniksysteme
Receiving of calls
The Major 3 has 10 decoders. They are coded in registers 020 to 029. If you don't need a decoder,
put in an F on first position. You can also program different modes in the registers 030 to 039.
The following modes are possible.
- managing of double sequences
- managing of tone sequences with more than 5 tones
- display of received ID codes
- bell tone
- on time of emergency contact
- acknowledgement
- loudspeaker mode
Decoder 1
The Decoder 1 is coded in register 020. Every tone sequence is compared with the decoder 1 coding
and in case of positions being coded with 'F', every tone of the tone system will be accepted. If the
tone sequence has been identified as correct, the loudspeaker is switched on, the loudspeaker lamp
flashes, and if you are not operating with double sequences, the acknowledgement is transmitted.
After that, the bell tone is activated. If you operate with double sequences, the acknowledgement
delay is at most one second. Any further tone sequence check, for example by decoder 2 or the
conference call decoder, is not performed.
Bell Tone
The bell tone volume is according to the basic programmed volume. You have the choice of
10 different bell tones (1 to A). If no bell tone is desired, a '0' has to be programmed at
this position.
Alarm Switching Output
After successful evaluation the bell tone is generated and the alarm contact is switched for n*1
seconds. The alarm time is programmable for each decoder. The alarm contact time is programmed
in one-second intervals in registers 030 to 039 3. position.
Acknowledgement
The automatic acknowledgement after a selective call can operate in different ways. The
acknowledgement mode is programmed at position 4 of register 030 as follows:
0 = no acknowledgement
1 = standard acknowledgement (from register 017)
2 = acknowledgement with a single tone of 600 Hz for 300 msec
3 = acknowledgement with a tone sequence from register 015 (ID-code)
4 = acknowledgement with the identification last received
5 = additionally standard acknowledgement (from register 017), used for FFSK
Group Call Decoder
The group call decoder for tone A or 0 can be programmed for each of the ten decoders. Program
tone A or 0 on the position you want. Don't forget to block acknowledgement.
