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5-Tone Sequence Parameters
Transmitter Pre-Running Time
The pre-running timer is preceding every call. lt consists of a fixed value of 100 ms and a
variable value which can be programmed in 10 ms intervals at digits 3 to 5 of register 046
(EEPROM 1). See section EEPROM 1 Programming Mode. The variable value can be dened
freely between '000' and '255'.
Example 1: ...............................................................................................................................................
The variable value is dened as '010'.
The xed pre-running time value is now 100 ms plus a variable value of 100 ms. Therefore,
the total value is 200 ms.
Example 2: ...............................................................................................................................................
The variable value is dened as '255'.
The xed pre-running time value is now 100 ms plus a variable value of 2550 ms. Therefore, the
total value is 2650 ms or 2.65 seconds.
Tone Length
The length of the rst tone is dened at digits 3 to 5 of register 045 (EEPROM 1). The length of the
other tones can be adjusted at digits 3 to 5 of register 044 (EEPROM 1). See section EEPROM 1
Programming Mode. The value can be switched in 10 ms intervals from '003' up to '255'. In case
of ZVEI 1 and ZVEI 2 the tone length is usually 70 ms, and in case of CCIR it is 100 ms. The tone
length of the rst tone can also deviate from the other tones. For example: Tone length of 1. tone =
1500 ms and 2. to 5. tone = 70 ms. The programmed tone lengths are adhered exactly by the 5-tone
encoder. In case of tone identication a tolerance is added to the programmed values. This ensures
that even inexact 5-tone telegrams are evaluated correctly.
6-Tone Sequence
For special applications it may be necessary to add a sixth tone to the 5-tone sequence. For
every short call <Short Call Button> as well as for normal call <Call Button> the sixth tone can be
programmed separately . The sixth tone for normal call is programmed at digit 3 of register 041
(EEPROM 1). The sixth tone for short calls is programmed in registers 014 and 015 (EEPROM 1). If
the sixth tone is not used, an 'F' has to be programmed at the corresponding address.
Register 014
Register 015
1. digit
short call 0
1. digit
short call 5
2. digit
short call 1
2. digit
short call 6
3. digit
short call 2
3. digit
short call 7
4. digit
short call 3
4. digit
short call 8
5. digit
short call 4
5. digit
short call 9
Different Tone Systems
The Major 4 can be congured for various tone systems without any hardware modication. The
tone system is selected at the rst digit of register 046 in EEPROM 1 (see the following table). See
section EEPROM 1 Programming Mode. When a tone system is selected, the tone length is not