FunkTronic Major BOS 4a User manual

Major BOS 4a

- 2 - mbos4a-english (25.02.14)
Kompetent für Elektroniksysteme
mbos4a (25.02.14) - 3 -
Kompetent für Elektroniksysteme
Table of Contents
Connectivity............................................................................................................................. 4
Control and Display Elements ................................................................................................. 5
Keypad................................................................................................................................. 5
Busy Status LED.................................................................................................................. 5
Transmitter Status LED........................................................................................................ 5
Channel Selection LED........................................................................................................ 5
Loudspeaker / Volume LED Display .................................................................................... 5
Display and Control Elements ................................................................................................. 6
Communication with one Calling Radio Subscriber ................................................................ 7
Channel Selection................................................................................................................ 7
Communicating with the Calling Radio Subscriber.............................................................. 7
Loudspeaker (On/Off status)................................................................................................ 9
Loudspeaker (Volume Control) ............................................................................................ 9
Headsets............................................................................................................................ 10
RX-AF-Outputs....................................................................................................................... 11
Encoder ................................................................................................................................. 12
External Signaling Device ..................................................................................................... 12
Transmitter Control................................................................................................................ 12
Audio-Frequency-Connection................................................................................................ 12
Microphone Selection............................................................................................................ 13
Channel Selection ................................................................................................................. 13
Opto-Coupler Input................................................................................................................ 14
Major BOS 4a´s in parallel Circuit ......................................................................................... 15
Activating of the Busy Lines............................................................................................... 15
Scanning of the Busy Lines ............................................................................................... 16

- 2 - mbos4a-english (25.02.14)
Kompetent für Elektroniksysteme
mbos4a (25.02.14) - 3 -
Kompetent für Elektroniksysteme
Monitoring-Interface TBBBox4 (optional) .............................................................................. 17
Assigning Channels to the UGA-Modules ......................................................................... 17
Evaluation Functions ......................................................................................................... 18
Tape Control (Switching Contact) ...................................................................................... 19
Service Program.................................................................................................................... 20
Monitor Status.................................................................................................................... 21
Programming Mode EEPROM........................................................................................... 21
EEPROM-Address Layout ................................................................................................. 22
Chart: Jumper and Potentiometer ......................................................................................... 27
Layout.................................................................................................................................... 28
Adjustment Instructions ......................................................................................................... 29
Sockets Pin Layout Connection ............................................................................................ 30
Technical Data....................................................................................................................... 31
General Safety Instructions.................................................................................................... 33
Factory Returning Instructions for old Equipment................................................................. 33
Release Notes....................................................................................................................... 31

- 4 - mbos4a-english (25.02.14)
Kompetent für Elektroniksysteme
mbos4a (25.02.14) - 5 -
Kompetent für Elektroniksysteme
Major BOS 4a
Major BOS 4a is a µC-controlled desktop controller unit for 2-way radio systems
controlling up to four radios. Different operating parameters can either be factory preset
or programmed during installation.
The Major BOS 4a is powered by an external +12V-DC power supply.
Up to four channels (radio sets, PA systems -/intercom etc.) can be connected, also
an external handset/headset, up to two external monitoring-interfaces (TBBox4), an
external signal source, a tape recorder and a AF-RX-amplifier for each channel.
Furthermore there is a RS232-connection, to which a terminal can be connected, or a
PC for external control.
There is a squelch input for each radio and also a PTT output, a busy-line,
an AF-input and AF-output. As the TX-AF-outputs are only active while transmitting,
several Major BOS 4a´s can be connected in parallel without any problems.
For detailed pinout see section Sockets Pin Layout Connection.
System / Connectivity
12VDC power supply connector (12VDC, external, max. 1,5A)
I2CI I²C-Bus
TB Tape recorder
RS232 RS 232 connection
PTT PTT (e.g. foot switch)
HS Headset
FK1 – 4 Transmit / Receive (channel 1 – 4, radio, PA system-/ .
Intercom, etc.)
Also see section Sockets Pin Layout Connection.

- 4 - mbos4a-english (25.02.14)
Kompetent für Elektroniksysteme
mbos4a (25.02.14) - 5 -
Kompetent für Elektroniksysteme
Control and Display Elements
Keyboard
The keyboard holds the following functions for each of the four channels:
Funkkreis x Selection button
+ Volume higher
- Volume lower
L Loudspeaker mute button
S Special function button
I Caller button for encoder 1
II Caller button for encoder 2
PTT button
All buttons can be locked separately
Busy LED
For each of the four radios there is a separate busy LED. To control the busy LED the
carrier input can be switched to ground or to +12V (or an external reference voltage Uref).
The logic of the busy input can be configured separately for each radio with the jumpers
J10 to J13. To change the reference voltage (+12V or Uref) use jumper J5. For jumper
settings see Chart: Jumper and Potentiometer
TX-LED
For each of the four channels there also is a separate TX LED, which lights up when
the corresponding transmitter is activated. The transmitter is activated by pushing the
PTT button while talking or by transmitting a call. Flashing of the TX LED means that
another Major BOS 4a is using this channel. Also see section Major BOS 4a´s in parallel
circuit.
Channel Selection LED
The channel selection LED (separate for each channel) lights up permanently when the
corresponding channel is selected and activated. Flashing of the channel selection LED
means that this channel has already been selected by another Major BOS 4a. Also see
section Major BOS 4a´s in parallel circuit.
Loudspeaker / Volume LED Display
The loudspeaker / volume display (separate for each channel) is a row of LEDs and indi-
cates the volume setting. If the loudspeaker-AF for the corresponding channel is turned
off the display turns dark.

- 6 - mbos4a-english (25.02.14)
Kompetent für Elektroniksysteme
mbos4a (25.02.14) - 7 -
Kompetent für Elektroniksysteme
Display and Control Elements
1 - Transmiting- , Squelch- , Selection Status LED
2 - Channel Selection Buttons
3 - Volume Display (row of LEDs)
4 - Volume Control Buttons (+/ - )
5 - Loudspeaker Buttons (mute)
6 - Special Function Buttons
7 - Encoder Buttons (I/II)
8 - PTT (for gooseneck or headset microphone)
9 - Loudspeaker
10 - PTT Button (for handset)
11 - Handset
12 - Gooseneck Microphone
1
4
5
6
8
7
9
2
3
10
11
12

- 6 - mbos4a-english (25.02.14)
Kompetent für Elektroniksysteme
mbos4a (25.02.14) - 7 -
Kompetent für Elektroniksysteme
Calling a single Radio Subscriber
Channel Selection
To activate one of the four channels push the corresponding selection button. To
deactivate a channel again push the corresponding selection button once more.
Depending on the configuration of the EEPROM-Register 030 in Bit 1 you can either
select several channels simultaneously or only one channel at a time.
Register 030 Number of selectable channels
Bit 1: 0 = several channels simultaneously (cumulative)
1 = only one channel at a time selected
When channels are activated the channel selection LED lights up. If the channel has
already been selected by a different Major BOS 4a the device can be programmed so
that the corresponding channel selection LED flashes.
Also see section Parallel circuit of several Major BOS 4a´s.
!!) In the EEPROM-Register 024 you can preselect which of the channels 1..4 (Bit 0..3)
is automatically selected after turning on the radio installation.
Register 024 selected channels after turning on
Bit 0: Channel 1 No / Yes (0/1)
Bit 1: Channel 2 No / Yes (o/1)
Bit 2: Channel 3 No / Yes (0/1)
Bit 3: Channel 4 No / Yes /0/1)
It is possible to configure the EEPROM-Register 027 so that the selected channels are
automatically saved in the EEPROM-Register 024 when the radio installation is turned
off.
Register 027 Save the selected channels No / Yes (00/01)
Communicating with the Radio Subscriber
There are three different ways of communication with a calling radio subscriber:
a) By pushing one of the red PTT buttons the transmitter of the corresponding channel
is activated on (the corresponding sending status LED lights up) and you can talk to the
caller through the gooseneck microphone. (It is also possible to connect an external switch
contact instead of a PTT button. See section Opto-Coupler input.) If another controlling
device is already transmitting on a channel the Major BOS 4a can be programmed so
that the corresponding sending status LED flashes and optionally the PTT button is
blocked. Also see section Parallel circuit of several Major BOS 4a´s. After depressing
the PTT button the caller can be heard on the loudspeaker. The receiver volume of the
corresponding channel is adjustable, see section Loudspeaker (Volume setting).

- 8 - mbos4a-english (25.02.14)
Kompetent für Elektroniksysteme
mbos4a (25.02.14) - 9 -
Kompetent für Elektroniksysteme
b) By picking up the handset and pushing the PTT button on the inside of the
handset. By doing so the transmitter of the selected channel is activated (TX
LED lights up) and you can talk with the caller through the microphone of the
handset.
If another controlling device is already transmitting on a channel the Major BOS
4a can be programmed so that the corresponding TX LED flashes and optionally
the PTT button is blocked. Also see section Parellel circuit of several Major
BOS 4a´s.
Depending on the configuration you can hear the caller constantly on the handset
or only after deactivating the PTT button, see section Loudspeaker.
The call is ended by replacing the handset.
The volume of the earpiece and the microphone are each adjustable by a
potentiometer. The potentionmeter is situated near the earpiece of the handset
and is easily accessible from the outside, using a screw-driver through a small
opening on the inside of the handset.
c) By connecting a compatible handset/headset and pressing the corresponding
PTT button PTT2 (e.g. a foot switch). By doing this the transmitter of the selected
radio channel is also turned on (TX LED lights up) and you can talk with the caller
through the microphone of the handset/headset. (It is also possible to connect
another external switch contact. See section Opto-Coupler input.)
If another controlling device is already transmitting on a radio channel the Major
BOS 4a can be programmed so that the corresponding TX LED blinks and
optionally the PTT button is blocked. Also see section Parallel circuit of several
Major BOS 4a´s.
Depending on the configuration you can hear the caller constantly on the handset
or only after depressing the PTT button, see section Loudspeaker.
After deactivating the PTT button you can also hear the caller on the loudspeaker.
The volume of the corresponding channel is adjustable, see section Loudspeaker
(volume setting).
The microphone level of the handset/headset can be adjusted with the
potentiometer P10 and the level of its loudspeaker with the potentiometer P12.
!!) After ending the call the activated radio channel can be deactivated by pressing
the corresponding selection button again.

- 8 - mbos4a-english (25.02.14)
Kompetent für Elektroniksysteme
mbos4a (25.02.14) - 9 -
Kompetent für Elektroniksysteme
Loudspeaker Switching Status
The built in loudspeaker is automatically turned off during transmission.
It is also possible to configurate the EEPROM-Register 02A in Bit 1 so that the
loudspeaker is also turned off automatically when the handset is lifted.
Register 02A Loudspeaker switching status when handset is lifted
Bit 1: 0 = Loudspeaker ON
1 = Loudspeaker OFF
The receiver-AF (on the loudspeaker) of individual radio channels can either be muted
manually by pressing the loudspeaker buttons or automatically when the correspending
busy line is activated (see section Parallel circuit of several Major BOS 4a´s).
If the loudspeaker-AF of a certain radio channel is turned off, the corresponding volume
LED display (row of LEDs) turns dark.
!!) In the EEPROM-Register 025 the loudspeaker switching statuses of the radio channels
1..4 (Bit 0..3) can be preselected after turning on the radio installation.
Register 025 Loudspeaker switching status after turning on
Bit 0: Channel 1 OFF/ON (0/1)
Bit 1: Channel 2 OFF/ON (0/1)
Bit 2: Channel 3 OFF/ON (0/1)
Bit 3: Channel 4 OFF/ON (0/1)
In addition it is possible to make a configuration in the EEPROM-Register 028 so that
loudspeaker switching statuses are automatically saved in the EEPROM-Register 025
when the radio installation is turned off.
Register 028 Saving the loudspeaker switching statuses
No/Yes (00/01)
The EEPROM-Register 02A in Bit 0 can be configurated so that the receiver-AF of all
radio channels (without muting) is switched to the loudspeaker or that the corresponding
radio channels also have to be activated additionally.
Register 02A Receiver-AF on loudspeaker
Bit 0: 0 = all radio channels without muting
1 = only activated radio channels without
muting
Loudspeaker (Volume Control)
The volume of the loudspeaker which is turned on can be set separately with the volume
buttons (+ = higher, - = lower) for each radio channel. The volume level is displayed on
the LED chain.

- 10 - mbos4a-english (25.02.14)
Kompetent für Elektroniksysteme
mbos4a (25.02.14) - 11 -
Kompetent für Elektroniksysteme
!!) In the EEPROM-Registers 018...01B the volume settings (´01..´08) for each radio
channel can be preselected separately after turning on the radio installation.
Volume after switching on for
Register 018 Channel 1
Register 019 Channel 2
Register 01A Channel 3
Register 01B Channel 4
In the EEPROM-Register 029 you can also make a configuration so that the selected
volume settings are automatically saved in the EEPROM-Registers 018...01B when the
radio installation is turned off.
Register 029 Save Volume setting No / Yes (00/01)
Earphones
The receiver-AF of the selected radio channel can always be heard on the earphones of
the handset and the headset.
The earphone-AF of individual radio channels can be muted either manually by pressing
the selection buttons or automatically by transmitting on the active or on one of the other
radio channels (earphone muting).
a) In the EEPROM-Register 022 a configuration for the radio channels 1..4 (Bit 0..3)
can be made so that the earphone-AF for the active radio channel is muted while
transmitting.
Register 022 Earphone-AF (while transmitting on the active channel) for
Bit 0: Channel 1 OFF / ON (0/1)
Bit 1: Channel 2 OFF / ON (0/1)
Bit 2: Channel 3 OFF / ON (0/1)
Bit 3: Channel 4 OFF / ON (0/1)
b) In the EEPROM-Register 023 a configuration for the radio channels 1..4 (Bit 0..3)
can be made so that the earphone-AF is muted while transmitting on a different radio
channel.
Register 023 Earphone-AF (while transmitting on a different radio channel) for
Bit 0: Channel 1 OFF / ON (0/1)
Bit 1: Channel 2 OFF / ON (0/1)
Bit 3: Channel 3 OFF / ON (0/1)
Bit 4: Channel 4 OFF / ON (0/1)