Manual [PDF] (24 pages)
- Updated: 27.05.2026
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Major 4a
Kompetent für Elektroniksysteme
English 2.0
m4a_eng2_0 (09.11.04)
- 2 -
Kompetent für Elektroniksysteme
Technical Data
Order Information
Ord.-No.
Description
681000
Major 4a
900012
Power Supply 230/12 Volt
Voltage of operation
12 V
Current
max. 800 mA
Weight
1,5 kg
Dimensions (without gooseneck microphone)
245 x 220 x 95 mm
Input impedance 2/4-wire
600 Ohm
Output impedance 2/4-wire
600 Ohm
Delivery
Major 4a with handset and gooseneck microphone
Power plug
Power Supply not delivert with
Contents
Delivery
2
Order Information
2
Technical Data
2
Control Elements Major 4a
3
General features
3
Rearview Major 4a
4
Sockets pinout Major 4a
4
Connecting Major 4a (5a) --> Two-Way-Radio via multiwire
5
Connecting Major 4a (5a) --> Line Interface LIM-AC
5
Keypad layout in programming mode
6
Menu structure
6
Hardware confi guration
9
2/4-wire confi guration
9
2-wire confi guration with FT630
9
Programming short call
10
Software confi guration
10
Individual programming of the buttons
11
Permanent digits of encoder
12
Transmitting 6/7/8-tone
13
sequences
13
Channel scanning function
13
Reset to factory defaults
14
Sample confi gurations Major 4a (5a)
15
Table of registers Major 4a
16
Release Notes
24
m4a_eng2_0 (09.11.04)
- 3 -
Kompetent für Elektroniksysteme
Control Elements Major 4a
Handset
with PTT button
Gooseneck microphone
Loudspeaker button
Call button
Short call button
PTT button
LC Display
Function buttons
Special buttons
Status LED´s
General features
The Major 4a is the newer design of the well kown Major 4. The Display was replaced by an alpha-
numeric LC Display with background illumination. A gooseneck microphone with high dynamics has
come to it. The programming possibilities were essentially widened and strongly simplifi ed by clear
text menu structure.
There are two sockets for headsets. One is normaly used for a PTT foot button. The 7 digital outputs
are normaly used for channel switching or also other functions. For operation a 12 volt power supply
is necessary.
The Major 4a can be programmed via the serial interface or keypad. It is also possible to connect a
printer or terminal on the serial interface. For printers with parallel interface is an optionaly interface
available.
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