FunkTronic Major BOS 2b2 User manual

Major BOS 2b2
serial number 3799 and later

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Inhalt
Technical Data 2
Controls of Major BOS 2b2 3
Major BOS 2b2 4
Programming 4
Connectivity 4
Tastatur 4
Carrier Indication (Squelch) 5
Transmitter Indication (PTT) 5
Selection Indication 5
Microphone Selection 5
Tone Call Decoder 5
Tone Call Encoder 6
Recording Conversations 6
Several Control Sets in Parallel Circuit 6
Activate Busy-Lines 6
Read Busy-Lines 6
External Signalling Device 6
AF telephone connection 6
Operating in FMS mode 7
Functions for TETRA digital radios (SW version 1.02 or higher) 7
Potentiometers 8
Service Program 8
Registers of Major BOS 2a2 9
Sockets Pinout 15
Layout - Main Board 16
Layout - Connection Board 17
Jumpers and Potentiometers 17
Connection Cable to PC (RS232, Ord.No: 635090) 17
General Safety Information 18
Returning of Old Equipment 18
Release Notes 19
Order Information 19
Page
Technical Data
Supply Voltage +12V DC -15% +25%
Current consumption max. 1000 mA
AF input level
Recommended value for earpiece AF 500 mV (at 10 kOhm)
Input impedance approx. 10 kOhm
AF output level
Factory default 500 mV at 200 Ohm
Range 300mV to 700mV
Output impedance (Transmitting) approx. 200 Ohm
Output impedance (Receiving) high impedance (disconnected)
Tape Recorder output level
Factory default - 6 dBm (at 600 Ohm)
Range (Potentiometer P8) - 14 dBm to - 2 dBm (at 600 Ohm)
Output impedance approx. 600 Ohm
Weight (without cable) approx. 1650 g
Size (without gooseneck microphone)
weight x depth x height 245 x 220 x 90 mm

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Controls of Major BOS 2b2
12 3
6
7
8
12
11
1 - Transmitter indication
2 - Selection indication
3 - Receiver indication (Squelch)
4 - Selection key
5 - Monitoring volume
6 - PTT key
7 - Tone Call key (Call I and Call II)
8 - Master volume
9 - Loudspeaker
10 - PTT key handset
11 - Handset
12 - Gooseneck microphone
4
10
9
5

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Major BOS 2b2
Major BOS 2b2 is identical to Major BOS 2a2, except that Major BOS 2b2 has an additional
internal connection board making it largely compatible to Major BOS 4a and 8a. The most
important difference is found in the PTT output which always switches to 12 V in Major BOS 2b2
while the polarity can be chosen for Major BOS 4a and 8a.
Most of the working parameters can be configured via a computer using the programming
software.
Regarding functionality and connector pin assignment, Major BOS 2b2 compatible to Major BOS
2b.
Of course, there are several changes and new features:
- electrical, programmable potentiometers have replaced the analogous potentiometers
- programmable registers instead of jumpers
- programmable headset volume
- programmable amplification of the audio inputs from radio
- noise suppression for the inputs from radio
- tunable minimum volume for single radio circuits and tunable minimum overall volume
- AF settings (mute, listening, max. volume) can be adjusted separately for earpiece, loudspeaker,
and tape
- software option "NF-Squelch" (AF squelch)
- software option "Encoder/Decoder" permitted for up to four radio circuits
- flashing squelch LED and alarm tone on decoding of a call (call 1, call 2)
Programming
The Major BOS 2a2 can be configured using the Major BOS 2a2/2b2 programming software (download
at www.funktronic.de -> Service). Alternatively, the functions can be programmed directly in the
respective registers using a terminal program (e.g. hyper terminal).
The adjustment of the potentiometers, in general, is done using the terminal program.
Connectivity
The Major BOS 2b2 is connected to a 12V DC power supply unit. Up to four radios can be connected
to the control set. For every radio, squelch input, PTT output, busy-line (compatible to Major BOS
4a/8a, but NOT to Major BOS 2a2) as well as NF in- and outputs are available. Furthermore, Major
BOS 2b2 features connections for a headset, an external signalling device and a tape output. Via the
RS 232 interface a PC connection for programming purposes can be established.
As the NF outputs are only open during transmission, several Major BOS 2b2 can be connected in
parallel circuit.
Tastatur
The keypad consists of four selection keys for the different radio circuits, two tone call keys and the
red PTT key.

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Carrier Indication (Squelch)
Every one of the four radio circuits provides its own carrier indicator (Squelch), which is located above
the corresponding selection key. If using junction box MBOS2AB1, for activation the squelch input
needs a voltage between 5V and 14V. If MBOS2AB6 is used, the logic of the carrier indication is
configurable. The polarity of the carrier indication and the AF muting when no carrier is present can
be programmed.
Transmitter Indication (PTT)
Every radio circuit has its own transmitter indication, which is lit when the transmitter is activated.
This happens upon pushing the PTT button or one of the two tone call buttons. The LED blinks if a
parallel Major BOS 2b2 is on transmission.
Selection Indication
The selection indicator is permanentely luminous if the corresponding radio circiut is selected and
active. If it is in blinking state this circuit is busy and cannot be selected.
Selection of Base Stations / Radio Circuits
To connect to one of the four radio circuits the corresponding selection key has to be pressed. A
subsequent button press sets the circuit to inactive. To activate more than one channel hold the first
pressed button down and select further circuits. Programming the Major BOS2b2 can disable this
feature. Acitve circuits are indicated by a luminous selection indication LED. A busy radio cuircuit
is idicated by a blinking LED and cannot be activated. Radio circuits can be disabled, active radio
circuits on power-on can be programmed.
Loudspeaker and Volume Control
On transmission the loudspeaker is turned off automatically. If it is off, when the handset ist lifted, can
be programmed. The loudspeaker volume can be adjusted with the master volume control.
Microphone Selection
The Major BOS2b2 has three microphone routings available. The PTT button in the handset turns
on the handset's microphone. The red PTT button and the headset's PTT input can be configured
independently. Possible associations are gooseneck microphone, headset microphone or automatic
selection. If automatic selection is on, the headset microphone is used if a headset is detected
otherwise the gooseneck microphone is used.
Tone Call Decoder
The optional software "Encoder/Decoder" allows the Major BOS2b2 to decode Tone Call1 and Tone
Call2 on any radio circuit and to activate the corresponding circuit automatically.

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Tone Call Encoder
The Major BOS 2b2 includes a encoder for Tone Call 1 and Tone Call 2. The tone calls are sent with
the corresponding keys of the keypad. The tone is sent as long as the button is pushed.
Recording Conversations
Via the installed tape recorder output the recording of conversations is possible. The interface
comprises a potential-free AF output as well as a potential-free contact (electronic relay) to control
a recording device.
Several Control Sets in Parallel Circuit
As the AF outputs are only cut in during transmission and the NF inputs can be switched to high-
resistance using Jumpers J1 and J2, several Major BOS 2b2 can be connected to each other. Therefor,
all connections to the radio circuits (TX-AF, RX-AF, squelch and PTT keying) must be connected in
parallel (bus or star wiring). The outputs for the radio circuits are compatible to Major BOS 4a and 8a
and can be combined. Only the PTT heying represents an exception. It is always active to +12V for
Major BOS 2b2 and cannot be changed to PTT keying vs. GND.
A special task is fulfilled by the busy-lines of the radio circuits, that are only connected between the
control sets. The busy-lines of Major BOS 2b2, 4a and 8a are compatible with each other but they
are NOT compatible to those of Major BOS 2a2 and may not at all be connected to those!
Activate Busy-Lines
Every control set that is connected to the respective busy-line can signalise to the control sets
connected in parallel if a circuit is activated or if transimission is already in progress.
Read Busy-Lines
Every control set that is connected to the busy-line recognizes if the respective circuit is busy and
indicates this by a flashing transmission indicator or selection indicator. Furthermore can be configured
how Major BOS 2b2 reacts to busy radio circuits, e.g. PTT keying or selection of the circuit can be
blocked and/or incoming AF can be muted.
External Signalling Device
An external signalling device can be connected to Major BOS 2b2. The sensitivity of this potential-free
input is 500 mV at 3 kohm and cannot be varied. By operating the corresponding PPT input (PTT3)
the external signal is transmitted to the selected circuits.
AF telephone connection
By connecting the external headset adapter the headset can be used for conversation via telephone
and radio. Switching of the headset to telephone mode is achieved via the optocoupler input that has
to be programmed appropriately (see section Optocoupler Input).

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Operating in FMS mode
With the software option "Encoder/Decoder" Major BOS 2b2 can be extended to a FMS control panel.
Possible FMS functions are the ID transmission at PTT keying and the transmission of up to two
arbitrary, programmed FMS telegrams (e.g. conversation request) using the two call buttons. in this
case, these are, of course, no longer available to transmit call 1 or call 2.
By conneting our FMS handset Commander 5 FMS to the D-Sub connector for external conversation
devices (handpiece or headset), the Major becomes ready for FMS use.
Here, the FMS handset can also be used as an alternative to the usual handpiece of the Major.
Therefor, the PTT output of the Commander 5 FMS must be configured to GND.
Functions for TETRA digital radios (SW version 1.02 or higher)
For application in digital radio monitoring of the conversation request tone is necessary. As the Major
mutes its loudspeaker (LS) during transmission, this function has not been available if transmission
is conducted using the gooseneck (GN) microphone.
Thus, in version V1.02 and higher the LS can also stay active during a transmission with the GN
microphone. Circuits, on which no transmission takes place, are muted. Listening to active circuits
(current transmissions) is still possible during transmission. Here, the volume can be reduced.
This function can also be active if the LS would be muted because the handset is taken off.
For transmission using a different microphone (headset, handset or via external input) this option is
not available.
New registers:
270: Circuit 1
271: Circuit 2
272: Circuit 3
273: Circuit 4
Description for all 4 registers:
1st digit: 0 = if SH-PTT is keyed and handpiece is taken off, the LS status depends on
register 016/2
1 = if SH-PTT is keyed and handpiece is taken off, the LS is always active
4th-8th digit: max. volume for SH-PTT: 00000 (LS aus) to 32767 (max. volume)
Here, the listening volume for the circuit is set, the total volume depends on the
overall volume settings

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Potentiometers
By the use of the potentiometers the volume settings of the different radio circuits can be adjusted.
The functions of the potis are described in the table below:
Poti Function/Level
P1 RX-AF (listen) circuit 1
P2 RX-AF (listen) circuit 2
P3 RX-AF (listen) circuit 3
P4 RX-AF (listen) circuit 4
P5 loudspeaker AF, (total)
Service Program
For Major BOS 2b2 the programming of the registers and the calibration of the electronic potentiometers
is accomplished using the service program. This program is accessible via the serial interface (for
pin assignment see section Cable Connection to PC). For this purpose a suitable terminal program
can be used: e.g. HyperTerminal (Windows), minicom (Linux).
The configuration of the serial interface is as follows:
data transfer rate 9600 bit/s
start bit 1
data bits 8
parity none
stop bit 1
flow control none
If the Major BOS 2a2 is switched on and the terminal program is started, the service program starts
after pressing ENTER ¬. showing the following menu:
Online - Monitor MBOS2a2
------------------------
Software: MBOS2a2
Version : V1.00
SW-Datum: 07.04.10
Option : Encoder/Decoder + AF-Squelch
Rxxx................read register xxx
Pxxx yyyyyyyy.......program register xxx with yyyyyyyy
A...................potentiometer calibration
Tx..................TX-output off/on (0/1)
Ixxxx...............switch on tone generator with xxxxHz (0000=off)
H...................detection of a headset
Q...................software reset
X...................exit monitor

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Register Function
Registers of Major BOS 2a2
000 Radio circuit configuration 1
1st digit circuit 1 enabled, y = 1, n = 0
2nd digit circuit 2 enabled, y = 1, n = 0
3rd digit circuit 3 enabled, y = 1, n = 0
4th digit circuit 4 enabled, y = 1, n = 0
5th digit several active circuits possible y = 1, n = 0
6th digit on PTT if no circuit is active: use previous circuit = 0, error = 1
7th digit default "previous" circuit after power-on (binary sum of circuits = 0 - F)
001 Radio circuit configuration 2
1st digit circuit 1 enabled at power-on, j = 1, n = 0
2nd digit circuit 2 enabled at power-on, j = 1, n = 0
3rd digit circuit 3 enabled at power-on, j = 1, n = 0
4th digit circuit 4 enabled at power-on, j = 1, n = 0
5th digit circuits at power-on according to digits 1 - 4 = 0,
previously enabled circuits = 1
002 Squelch configuration 1
1st digit circuit 1
2nd digit circuit 2
3rd digit circuit 3
4th digit circuit 4
1st - 4th digit SQL active: AF = 2 (only with option AF-squelch)
high = 1
low = 0
003 Squelch configuration 2
1st digit circuit 1 AF is on: on squelch = 1, always = 0
2nd digit circuit 2 AF is on: on squelch = 1, always = 0
3rd digit circuit 3 AF is on: on squelch = 1, always = 0
4th digit circuit 4 AF is on: on squelch = 1, always = 0
004 Busy Out configuration
1st digit Busy Out circuit 1
2nd digit Busy Out circuit 2
3rd digit Busy Out circuit 3
4th digit Busy Out circuit 4
1st - 4th digit Busy Out Busy always off = 0
Busy active if TX is active = 1
Busy active if circuit is on = 2
005 Busy In LED configuration
1st digit Busy In circuit 1
2nd digit Busy In circuit 2
3rd digit Busy In circuit 3
4. digit Busy In circuit 4
1st - 4th digit Busy LED no function = 0
Busy active: TX-LED flashes = 1
Busy active: circuit-LED flashes = 2

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006 Busy In, configuration of functions
1st digit Busy In circuit 1
2nd digit Busy In circuit 2
3rd digit Busy In circuit 3
4th digit Busy In circuit 4
1st - 4th Stelle Busy In no function = 0
active, mutes circuit = 1
active, disables PTT keying =2
active, disables PTT keying and mutes circuit = 3
active, disables circuit activation = 4
active, disables circuit activation and mutes circuit = 5
active, disables activation of any circuit = 6
active, disables activation of any circuit and mutes circuit = 7
007 TX In LED configuration
1st digit TX In circuit 1
2nd digit TX In circuit 2
3rd digit TX In circuit 3
4th digit TX In circuit 4
1st - 4th digit TX In no function = 0
active, TX-LED flashes = 1
008 TX In Funktionskonfiguration
1st digit TX In circuit 1
2nd digit TX In circuit 2
3rd digit TX In circuit 3
4th digit TX In circuit 4
1st - 4th digit TX In no function = 0
active, mutes circuit = 1
active, disables PTT keying = 2
active, disables PTT keying and mutes circuit = 3
009 Duplex configuration
1st digit TX In circuit 1
2nd digit TX In circuit 2
3rd digit TX In circuit 3
4th digit TX In circuit 4
1st - 4th digit simplex = 0
duplex = 1
010 AF input configuration of deactivated circuits
011 AF input configuration of activated circuits
1st digit circuit 1 to loudspeaker
2nd digit circuit 2 to loudspeaker
3rd digit circuit 3 to loudspeaker
4th digit circuit 4 to loudspeaker
5th digit circuit 1 to earpiece
6th digit circuit 2 to earpiece
7th digit circuit 3 to earpiece
8th digit circuit 4 to earpiece
1st - 8th digit circuit is muted = 0
listening volume = 1
maximum volume = 2 or 3
Register Function