Page 1
Major BOS 8a
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Page
Inhalt
Major BOS 8a 3
Connectivity 3
Control and Display Elements Major BOS 8a 4
Calling a Single Radio Subscriber 6
RX-AF Outputs 10
Encoder 10
External Signalling Device 11
Transmitter Control
11
Connection to Telephone AF 11
Microphone Selection 11
Channel Selection (additionally) 11
Opto-Coupler Input 12
Connecting several Major in Parallel Circuit 13
Activating the Busy Lines 13
Actions on Detection of Busy Lines 14
Monitoring-Interface TBBox4 (Accessories) 15
Tape Control (continued) 17
Functions for TETRA Digital Radios (Software V5.2 and newer)
17
Switching Matrix for Circuit Forwarding (optional) 18
New Registers in MBOS 8a: 19
Service Program 20
EEPROM Adresses 22
EEPROM Adresses (continued)
23
Jumpers und Potentiometers 28
Board Layout 29
Adjustment Instructions 30
Sockets Pinout 31
Technical Data
33
General Safety Remarks 34
Returning of Old Equipment 34
Release Notes 35
Appendix 36
Conversion chart: hexadecimal (HEX) <--> decimal (DEC) 36
Order Information
Order No. Description
631110 Major BOS 8a
635090 RS232 programming cable
900011 Power supply unit, suitable for Major BOS 1a, 2b, 4a, 8a
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Major BOS 8a
Major BOS 8a is a µC-controlled desktop controller unit for 2-way radio systems controlling
up to eight radios. Different operating parameters can either be factory preset or programmed
during installation.
Connectivity
For operation 12 V DC power supply is necessary. Up to eight channels (radio sets, PA
systems -/intercom etc.) can be connected, also an external handset/headset, up to two
external monitoring-interfaces (TBBox4), an external signalling device, 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.
12VDC -> power supply connector (12V DC, external, max. 1.5A)
I2C -> I2C bus
TB -> Tonbandgerät
RS232 -> RS 232 connection
PTT -> PTT (e.g. foot switch)
HS -> headset
1 - 8 -> transmit/receive (circuit 1 - 8: radio, PA system-/
intercom, etc.)
see also section Sockets Pinout
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1 - PTT , carrier , loudspeaker and selection displays
2 - selection buttons
3 - volume buttons (increase)
4 - volume displays (LED line)
5 - volume buttons (decrease)
6 - loudspeaker buttons (mute)
7 - call 1 buttons
8 - call 2 buttons
9 - PTT buttons (for gooseneck microphone)
10 - loudspeaker
11 - handset with PTT button
12 - gooseneck microphone
Control and Display Elements Major BOS 8a
4
5
6
8
7
9
2
3
10
11
1
12
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Control and Display Elements (continued)
Keyboard
The keyboard holds the following functions for each of the eight channels:
Kreis selection button
increase volume
decrease volume
mute loudspeaker
Ruf 1 button for tone call 1
Ruf 2 button for tone call 2
Senden PTT button
Carrier Display (Squelch)
For each of the eight circuits there is a separate carrier display (squelch) LED . To
control the carrier display the squelch input can either be switched for ground (
GND) or
to +12V. The logic of the squelch input can be configured separately for each radio with
the jumpers J18 to J25.
PTT Display
For each of the eight circuits there is also a separate PTT display LED
, that lights if
the transmitter for the respective circuit is keyed by pressing PTT, call 1 or call 2. If a PTT
display flashes, another control set is transmitting on this radio circuit.
Loudspeaker Display
The loudspeaker display LED
lights either if loudspeaker AF is active or if the loudspeaker
is muted for that circuit.
The logic of the loudspeaker display can be programmed in register 030 / bit 0 of the
EEPROM:
register 030 loudspeaker display lights when
bit 0: 0 = loudspeaker AF is active
1 = loudspeaker AF is muted
Selection Display
The selection display LED lights, if the respective circuit was selected and is active. If
programmed in that way, the LED flashes if the circuit is selected by a different Major.
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Calling a Single Radio Subscriber
To activate one of the eight 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 circuits that can be selected
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 8a the device can be programmed so that
the corresponding channel selection LED flashes.
In EEPROM register 024 you can preselect which of the channels 1..8 (bit 0..7) is
automatically selected after turning on the control set.
register 024 selected channels after turning on
bit 0: channel 1 no / yes (0/1)
bit 1: channel 2 no / yes (0/1)
bit 2: channel 3 no / yes (0/1)
bit 3: channel 4 no / yes (0/1)
bit 4: channel 5 no / yes (0/1)
bit 5: channel 6 no / yes (0/1)
bit 6: channel 7 no / yes (0/1)
bit 7: channel 8 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 angewählte Kreise speichern Nein/Ja (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 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.) After pressing the PTT button the caller can be heard on the loudspeaker.
The receiver volume of the corresponding channel is adjustable.
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 (PTT LED lights up) and
you can talk with the caller through the microphone of the handset. Depending on the
configuration you can hear the caller constantly on the handset or only after deactivating
the PTT button. 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.
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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 (PTT LED lights up) and you can talk with the caller through the microphone of
the handset/headset. Depending on the configuration you can hear the caller constantly
on the handset or only after releasing the PTT button. The volume of the corresponding
channel is adjustable.
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. After ending the call the activated radio channel can be deactivated by
pressing the corresponding selection button again.
The microphone level of the handset/headset can be adjusted with the potentiometer P10
and the level of its loudspeaker with the potentiometer P12.
Loudspeaker
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 8a).
In EEPROM register 025 the loudspeaker switching statuses of the radio channels 1..8
(bit 0..7) 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)
bit 4: Channel 5 OFF/ON (0/1)
bit 5: Channel 6 OFF/ON (0/1)
bit 6: Channel 7 OFF/ON (0/1)
bit 7: Channel 8 OFF/ON (0/1)
In addition it is possible to make a configuration in the EEPROM register 028 so that the
loudspeaker switching statuses are automatically saved in EEPROM register 025 when
the Major is turned off.
register 028 Saving the loudspeaker switching statuses
No/Yes (00/01)
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Loudspeaker (continued)
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
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 line.
In EEPROM registers 018...01F 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
register 01C Channel 5
register 01D Channel 6
register 01E Channel 7
register 01F Channel 8
In EEPROM register 029 you can also make a configuration so that the selected volume
settings are automatically saved in the EEPROM registers 018...01F when the radio
installation is turned off.
register 029 save volume setting No / Yes (00/01)
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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 EEPROM register 022 a configuration for the radio channels 1..8 (bit 0..7) 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)
bit 4: Channel 5 OFF / ON (0/1)
bit 5: Channel 6 OFF / ON (0/1)
bit 6: Channel 7 OFF / ON (0/1)
bit 7: Channel 8 OFF / ON (0/1)
b) In EEPROM register 023 a configuration for the radio channels 1..8 (bit 0..7) 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)
bit 5: Channel 5 OFF / ON (0/1)
bit 6: Channel 6 OFF / ON (0/1)
bit 7: Channel 7 OFF / ON (0/1)
bit 8: Channel 8 OFF / ON (0/1)
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RX-AF Outputs
The volume-controlled receiver AF can be tapped individually for each radio channel on
the Major BOS 8a. The outputs can be used e.g. for connecting external AF-amplifier.
The receiver AF (RX-AF outputs) of individual radio channels can be muted either
- manually by pressing the loudspeaker buttons or
- automatically by activating the corresponding busy lines or
- automatically by transmitting on the active or a different radio channel
There is one muting output per radio channel with which the connected AF-RX amplifier
can be muted when there is no receiver signal (squelch) (output switches to GND). See
also section Sockets Pinout.
a) In EEPROM register 020 a configuration for the radio channels 1..8 (bit 0..7) can be
made so that the RX-AF output is muted while transmitting on the own radio channel.
register 020 RX-AF output (while transmitting on the active radio
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)
bit 4: Channel 5 OFF / ON (0/1)
bit 5: Channel 6 OFF / ON (0/1)
bit 6: Channel 7 OFF / ON (0/1)
bit 7: Channel 8 OFF / ON (0/1)
b) In EEPROM register 021 the radio channels 1..8 (bit 0..7) can be configured so that
the RX-AF output is muted while transmitting on a different radio channel.
register 021 RX-AF output (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 2: Channel 3 OFF / ON (0/1)
bit 3: Channel 4 OFF / ON (0/1)
bit 4: Channel 5 OFF / ON (0/1)
bit 5: Channel 6 OFF / ON (0/1)
bit 6: Channel 7 OFF / ON (0/1)
bit 7: Channel 8 OFF / ON (0/1)
Encoder
Major BOS 4a has an integrated encoder for call 1 and call 2. The calls for each channel
are transmitted directly with the corresponding buttons on the keyboard (RUF 1 or RUF2).
The calls are transmitted as long as the corresponding button is being pressed.
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External Signalling Device
An external signaling device can be connected to Major BOS 8a. The sensitivity of the
potential-free inputs can be adjusted with the potentiometer P11.
By activating the corresponding PTT button input (PTT3) the external signal is transmitted
to the selected radio channel(s). Here, an additional external switch contact can be
connected as PTT button.
Transmitter Control
The transmitters of the selected radio channels are activated with one of the PTT buttons
(e.g. handset or headset) and stay activated as long as the PTT button is being pressed.
During transmitting the corresponding transmitters are automatically activated.
It is always possible to transmit on non-activated radio channels by using the red PTT
buttons on the control panel.
The transmitter control can be switched to ground or to +12V. The logic of the PTT button
outputs can be configured separately for each radio with the jumpers J10 to J17. By
using the open-collector outputs it is easily possible to connect several Major BOS 8a
in parallel circuit.
Connection to Telephone AF
The audio-frequency connection is not integrated in the Major BOS 8a anymore. But
by connecting the external headset-adapter the headset can be used as a combined
communicating device for telephone and radio.
The headset is switched to the telephone by an opto-coupler input, which has to be
programmed accordingly (see section Opto-Coupler Input).
Microphone Selection
For each of the 3 PTT inputs it is possible to program the corresponding microphone
individually in register 052. Additionally there are two ways of automatic headset
detection:
- the PTT2 input can be programmed as headset detection (programming register 04C)
- the Major BOS 8a can detect if a headset is connected by measuring the headset
supply voltage (programming register 051/052).
The threshold level in register 051 has to be set so that the measured supply voltage
(at ST10 between Pin 2 and 5) without headset is higher and with headset is lower than
the threshold level. If the PTT2 input is used as headset detection the Major BOS 8a
detects the headset when the input is activated (bridge to ground (GND)). If the Major
BOS 4a has detected a headset then all buttons programmed as SH/HS-PTT use the
headset microphone. Otherwise they use the gooseneck microphone.
Channel Selection (additionally)
In register 04E you can program whether the loudspeaker is turned on simultaneously
when activating the radio circuit. In register 04F you can program whether the loudspeaker
is turned off simultaneously when deactivating the radio circuit.
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Opto-Coupler Input
The Major BOS 8a has an opto-coupler input at connector ST14a. This opto-coupler
input can be programmed with different functions.
a) If this register is encoded to value ´00´, the opto-coupler input switches the handset/
headset to the audio-frequency-connection when activated (standard function, see
section Connection to Telephone AF).
b) The opto-coupler input can also be used to emulate certain key functions
of the switch panel or to enable switching functions for special applications.
To do this the assignment to the radio channels is coded at the 1st digit (high-nibble) in
EEPROM register 047. At the 2nd digit (low-nibble) the key function resp. the special
function which is to be emulated, is encoded:
register 047 Opto-coupler input
Special function
00 = control the telephone relais
10 = microphone switching for PTT2
PTT2 transmits via gooseneck microphone, when opto coupler is turned on
20 = microphone switching for PTT2
PTT2 transmits by gosoeneck microphone when
opto-coupler is turned off
1st digit Assignment to
0 = all activated radio channels
1..8 = radio channel 1..8
2nd digit emulated key / special function
0 = (-no function -)
1 = radio channel (selction)
2 = volume higher
3 = volume lower
4 = loudspeaker ON / OFF
5 = call 2
6 = call 1
7 = transmit (gooseneck microphone)
8 = transmit (microphone of handset/headset)
9 = transmit (external encoder)
A = special functions button
B = transmit (SH or HS-micro), PTT2 selects micro
C = transmit (SH or HS-micro), switching by automatic
headset detection
To activate the opto-coupler input direct current (3V < U < 15V) is necessary that can be obtained
directly from ST14a/2. For higher ext. switching voltages an additional external dropping resistor
is necessary (internal dropping resistor = 1kohm).
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Connecting several Major in Parallel Circuit
As the AF outputs are only open during transmission and the AF inputs can be switched
to high-resistance by pulling the jumpers J1 to J4, it is possible to connect several
Major
BOS 8a in parallel.
Therefor, all connections to the single radio circuits (TX-AF, RX-AF, squelch and transmitter
PTT) have to be connected in parallel (bus- or hub-wiring).
Here the busy lines of the radio channels, which can only be connected with other control
sets, have a special function.
Activating the Busy Lines
Each control set, which is connected to the corresponding busy line, can signalize to other
control sets in parallel circuit, if a radio channel has already been selected and/or if a radio
channel is already used for transmitting.
a) In the EEPROM register 02B it is possible to make a configuration for the radio channels
1..8 (bit 0..7) so that the corresponding busy line is activated if the circuit is selected.
register 02B activate busy line if circuit is selected
bit 0: circuit 1 NO/YES (0/1)
bit 1: circuit 2 NO/YES (0/1)
bit 2: circuit 3 NO/YES (0/1)
bit 3: circuit 4 NO/YES (0/1)
bit 4: circuit 5 NO/YES (0/1)
bit 5: circuit 6 NO/YES (0/1)
bit 6: circuit 7 NO/YES (0/1)
bit 7: circuit 8 NO/YES (0/1)
b)
In the EEPROM register 02C it is possible to make a configuration for the radio chan-
nels 1..8 (bit 0..7) so that the corresponding busy line is activated when transmitting (on
this channel).
register 02C activate busy line during transmission
bit 0: circuit 1 NO/YES (0/1)
bit 1: circuit 2 NO/YES (0/1)
bit 2: circuit 3 NO/YES (0/1)
bit 3: circuit 4 NO/YES (0/1)
bit 4: circuit 5 NO/YES (0/1)
bit 5: circuit 6 NO/YES (0/1)
bit 6: circuit 7 NO/YES (0/1)
bit 7: circuit 8 NO/YES (0/1)
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Actions on Detection of Busy Lines
Each control set, which is connected to the corresponding busy line, detects an activated
busy line and reports this optically to the user as a blinking channel selection LED or as
a blinking TX LED.
This optical display can be configurated in EEPROM register 02D for the radio channels
1..8 (bit 0..7).
register 02D optical busy-LED for
bit 0: circuit 1 as blinking channel selection LED / TX LED (0/1)
bit 1: circuit 2 as blinking channel selection LED / TX LED (0/1)
bit 2: circuit 3 as blinking channel selection LED / TX LED (0/1)
bit 3: circuit 4 as blinking channel selection LED / TX LED (0/1)
bit 4: circuit 5 as blinking channel selection LED / TX LED (0/1)
bit 5: circuit 6 as blinking channel selection LED / TX LED (0/1)
bit 6: circuit 7 as blinking channel selection LED / TX LED (0/1)
bit 7: circuit 8 as blinking channel selection LED / TX LED (0/1)
You can also configure how the Major BOS 8a treats busy radio channels: e.g. the trans-
mitter PTT can be disabled and/or the receiver-AF for the loudspeaker (and the RX-AF
output) can be muted:
a) In EEPROM register 02E it is possible to make a configuration for the radio channels
1..8 (bit 0..7)so that the PTT is disabled when the radio channel is busy.
register 02E PTT is disabled when the channel is busy
bit 0: circuit 1 NO / YES (0/1)
bit 1: circuit 2 NO / YES (0/1)
bit 2: circuit 3 NO / YES (0/1)
bit 3: circuit 4 NO / YES (0/1)
bit 4: circuit 5 NO / YES (0/1)
bit 5: circuit 6 NO / YES (0/1)
bit 6: circuit 7 NO / YES (0/1)
bit 7: circuit 8 NO / YES (0/1)
b) In EEPROM register 02F it is possible to make a configuration for the radio channels
1..8 (bit 0..7) so that the loudspeaker-AF is muted when the radio channel is busy.
register 02F loudspeaker-AF is muted when the channel is busy
bit 0: circuit 1 NO / YES (0/1)
bit 1: circuit 2 NO / YES (0/1)
bit 2: circuit 3 NO / YES (0/1)
bit 3: circuit 4 NO / YES (0/1)
bit 4: circuit 5 NO / YES (0/1)
bit 5: circuit 6 NO / YES (0/1)
bit 6: circuit 7 NO / YES (0/1)
bit 7: circuit 8 NO / YES (0/1)
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Monitoring-Interface TBBox4 (Accessories)
The optional monitoring-interface TBBox4 can be looped in to max. 4 radio channels in
order to connect a multi-track voice recorder and/or to interpret or transmit signaling on
the radio channels with the help of a PC if the TBBox4 is equipped with the corresponding
UGA-modules (option)(using a modem).
For this purpose the external PC is connected by the integrated RS232-interface of the
TBBox4.
Together with the Major BOS 8a certain calls like tone sequences or single tones (e.g.
call 1, call 2), which are preprogrammed in the TBBox4, can be evaluated. The evaluation
status is transmitted to the Major BOS 4a by the I²C-Bus (connector ST14).
If the evaluation status is to be transmitted to several Major BOS 8a or controlling the tape
relay of the TBBox4 is used by several Major, their control inputs have to be connected to
the I²C-Bus-concentrator I2C-Con.
For programming the TBBox4 see manuals Monitoring-Interface TBBox4 and
Universal-encoder/decoder-module UGA00.
Assigning Circuits to the UGA-Modules
Each TBBox4 can be equipped with max. 4 UGA-modules, so that up to 8 UGA-modules
are available for decoder functions when 2 TBBox4 units are connected..
The individual radio channel numbers (´01´...´04´) in the EEPROM registers 031...038
can be assigned freely to these 8 UGA-modules. If no radio circuit is to be assigned to a
certain UGA-module set the radio channel number to value ‘00’.
Assigned radio channel number for
register 031 UGA(1)/TBBox4(1)
register 032 UGA(2)/TBBox4(1)
register 033 UGA(3)/TBBox4(1)
register 034 UGA(4)/TBBox4(1)
register 035 UGA(1)/TBBox4(2)
register 036 UGA(2)/TBBox4(2)
register 037 UGA(3)/TBBox4(2)
register 038 UGA(4)/TBBox4(2)
Ex factory the EEPROM registers 031...034 are programmed in sequence with the radio
channel numbers 01...04 and the EEPROM-registers 035...038 with the value ‘00’ (no
radio channel assigned).
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Decoder Functions
Each TBBox4 can be equipped with max 4 UGA-modules, so that up to 8 UGA-modules
are available for decoder functions when 2 TBBox4 are connected.
Each UGA-module can be programmed so that when certain signalings (single tones, tone
sequences) are decoded either one of the two switching outputs DEC1 or DEC2 briefly
(e.g. 1 sec)switches to ground (GND). See manuals Monitoring-Interface TBBox4 and
Universal-encoder/decoder-module UGA00.
The status of the switching outputs DEC1 and DEC2 of all UGA-modules is transmitted to
the Major BOS 8a and causes the loudspeaker-AF of the corresponding radio channels
to be turned on(if it was turned off before):
a) If the switching output DEC2 is turned on because of the UGA-decoding, then the
loudspeaker-AF of the corresponding radio channel is turned on permanently.
b) If the switching output DEC1 is turned on because of the UGA-decoding, then the
loudspeaker-AF of the corresponding radio channel is turned on for the duration T. The
duration T can be programmed separately for the radio channels 1..8 in the EEPROM
registers 03D...044 in steps of seconds (Value coded as HEX-Number in seconds).
register 03D radio circuit 1
register 03E radio circuit 2
register 03F radio circuit 3
register 040 radio circuit 4
register 041 radio circuit 5
register 042 radio circuit 6
register 043 radio circuit 7
register 044 radio circuit 8
Ex factory the EEPROM registers 03D...044 are programmed with the Hex-value ‘0A’
(10*1sec=10sec).
Tape Control (switching contact)
The switching contact for controling the tape (Start/Stop) can be configured separately for
each of the two TBBox4 units.
In EEPROM registers 039 and 03A you can code which radio circuits 1..8 (bit 0..7)
control the audio tape switching contact of the TBBox4(1) and TBBox4(2).
register 039 audio tape switching contact TBBox4(1) controlled by
bit 0: circuit 1 NO/YES (0/1)
bit 1: circuit 2 NO/YES (0/1)
bit 2: circuit 3 NO/YES (0/1)
bit 3: circuit 4 NO/YES (0/1)
bit 4: circuit 5 NO/YES (0/1)
bit 5: circuit 6 NO/YES (0/1)
bit 6: circuit 7 NO/YES (0/1)
bit 7: circuit 8 NO/YES (0/1)
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Tape Control (continued)
register 03A audio tape switching contact TBBox4(2) controlled by
bit 0: circuit 1 NO/YES (0/1)
bit 1: circuit 2 NO/YES (0/1)
bit 2: circuit 3 NO/YES (0/1)
bit 3: circuit 4 NO/YES (0/1)
bit 4: circuit 5 NO/YES (0/1)
bit 5: circuit 6 NO/YES (0/1)
bit 6: circuit 7 NO/YES (0/1)
bit 7: circuit 8 NO/YES (0/1)
The tape control switching contacts are activated with each PTT or squelch/carrier
detection of the corresponding radio channels. After discontinuation of these conditions
they are deactivated automatically after the delay time T.
The delay time T can be programmed separately for the tape control switching contacts
of the TBBox4(1) resp. TBBox4(2) in the EEPROM registers 03B resp. 03C in steps
of 100ms.
Delay time T = N*100ms (enter as Hex-value!!!)
Register 03B Delay time for tape control switching contact TBBox4(1)
Register 03C Delay time for tape control switching contact TBBox4(2)
Ex factory the EEPROM-registers 03B and 03C are programmed with the Hex-value „32”
(50*100ms = 5sec).
The own tape control switching contact (ST12 / Pin2) is activated as long as one of the
two TBBox4 switching contacts is activated.
Functions for TETRA Digital Radios (Software V5.2 and newer)
Using TETRA, speaking is not pssoible until the conversation is initiated. Therefor, the radio
transmits an attention tone. Usually, this tone cannot be heard in the loudspeaker as it is
muted when transmitting. If transmitting using handset or headset the tone can be heard
in the earphone. When the gooseneck microphone is used the toe cannot be heard.
In the new register 054 it can be programmed if an analogue (0) or a digital (1) radio is
connected. If the radio is programmed as analogue, the usual settings are applied. If it is
programmed as digital, the loudspeaker is not muted during transmission with the gooseneck microphone (ONLY with the GN microphone) to this radio. ALL currently activated
radio circuits can still be heard on the loudspeaker during the conversation.
The programming of registers 020 and 021 also is of importance for transmission on a digital
circuit. Usually, in register 020 the same value as in register 054 has to be programmed.
Register 021 allows to turn off other radio circuits during transmission.
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Programming Example:
radio circuits 1-6: analogue, radio circuit: 7-8 digital
Only the circuit of the current conversation is to be heard on the loudspeaker
register 020: C0
register 021: 00
register 054: C0
The values to program in all 3 registers are calculated as follows:
circuit 1: 1
circuit 2: 2
circuit 3: 4
circuit 4: 8
The numbers of all selected circuits have to be added and the result is programmed in the
second digit of the register.
circuit 5: 1
circuit 6: 2
circuit 7: 4
circuit 8: 8
The numbers of all selected circuits have to be added and the result is programmed in
the first digit of the register.
Numbers 10-15 are programmed as letters A-F (10=A, 11=B, 12=C,13=D, 14=E, 15=F).
Switching Matrix for Circuit Forwarding (optional)
The additional functions for radio circuit forwarding are controlled by long pressing of
the the circuit's selection and loudspeaker buttons. MBOS 8a allows to transmit an
incoming AF of one circuit to the same (RS1) and/or to any other circuit (RS2). Here,
only one channel is receiving in order to avoid feedback. Controlling the transmitter can
be done by carrier or by AF with a delay time. After decay of the carrier or at the end of
the AF decay time the transmitters are turned off and the initiation of new forwarding is
blocked for a programmable time
The circuits that are acitvated for forwarding are indicated by fast flashing of the lower
volume LED. Long pressing of the selection buttons toggles the status of the circuit
from forwarding active (LED flashes) to forwarding off (LED on or off depending on
the volume). Long pressing of a loudspeaker button activates a combination of circuits
defined in the EEPROM. At least one of the loudspeaker buttons should be programmed
with '00' to be able to turn off all active forwarding operations.
Current forwarding is indicated on the display by fast flashing of the transmission LED.
The programming of all parameters is acheived form the PC via the RS 232 interface
using a terminal program. The EEPROM registers > 100 are adressing the EEPROM on
the switching matrix board.
The RS1 function is active if exactly one circuit is active for forwarding and the
respective BIT in register 113 is programmed properly. If the corresponding BIT in
register 112 is programmed, forwarding of this circuit to all other circuits always results
also in forwarding to the original circuit (RS1).
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Starting with software version V3.8 of the Major BOS 8 main board forwarding to
certain circuits can also be activated and deactivated via the RS232 interface. Therefor,
there is the new command '$Kxx'. xx (00-FF) corresponds to the active circuits as also
programmable in registers 080-087
Ab Software Version V3.8 der Major BOS 8 Hauptplatine lassen sich die Überleitkreise
auch durch die RS232 aktivieren und deaktivieren. Dazu gibt es den neuen Befehl
‚$Kxx‘. xx (00-FF) entspricht dabei den aktiven Kreisen wie auch im Register 080-087
programmierbar.
Example: $K00: no forwarding , $K03: forwarding to circuits 1+2
New Registers in MBOS 8a:
register 048: time for long pressing, (HEX) nn * 10ms
Example: 64 (HEX) = 100 (DEZ) * 10ms = 1s
register 080: predefined circuits to which forwarding is active upon long pressing of
loudspeaker button (of circuit 1)
BIT0 = circuit 1 ..... BIT7 = circuit 8
reg. 081-087: same as Register 080 for loudspeaker buttons of circuits 2-8
reg. 100-107: threshold value for AF detection (circuit 1-8)
reg. 108-10F: delay time for AF detection (circuit 1-8, nn*50ms)
Example: 14 (HEX) = 20 (DEZ) * 50ms = 1s
register 110:
forwarding mode for circuits 1 (BIT0) - 8 (BIT7)
BIT=0: AF-controlled, BIT=1: carrier controlled
register 111:
blocking time after end of forwarding until new forwarding operations
are possible, nn*10ms
Example: 32 (HEX) = 50 (DEZ) * 10ms = 500ms
register 112:
RS1 additionally to RS2 for this circuit
BIT0 = circuit 1 ..... BIT7 = circuit 8
register 113:
RS1 only if exactly one circuit is activated for forwarding
BIT0 = circuit 1 ..... BIT7 = circuit 8
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Service Program
The Major BOS 8a has a RS-232-interface with the following specifications:
19200 Baud, 1 startbit, 8 databits, no parity, 1 stopbit
The connectors for the RS-232-interface (RXD, TXD, GND) are located on the 8-pin
RJ45-plug ST15 inside. See section Sockets Pinout.
To use the service program, a simple terminal or a PC with terminal program has to be
connected to this RS-232-interface.
For this purpose the data format resp. the interface has to be set to the above mentioned
specifications.
If Windows is installed on your PC, you can configure the standard Windows terminal
program (e.g. Hyperterminal) accordingly, choosing the option protocol = X on / X off.
(Therfore you only have to connect the three pins RXD, TXD and GND.
If the terminal (or the PC) is connected correctly, you will have access to the service
program and to a range of service commands for:
- programming mode EEPROM
- software reset
To start the service program just enter <$A2>, <return>. The following text will appear on
the screen:
Online - Monitor PIC 16F877A Software ‚MBOS8a‘ V 2.0
vom {Datum} (C) FunkTronic ‚01-07
Rxxx Read EEPROM Register xxx
Pxxx:yy Program yy in EEPROM Register xxx
X Reset
#
Please note: the character _ means <space> resp. <blank>.
Monitor Status
The service program will usually be locked after the device has been turned on
(monitor status = ´00`). In this case the service program has to be started by entering
<$A2><CR>(=Enter). Then the monitor menu ( see above) appears on the screen.
If the Major BOS 8a is to be programmed or controlled automatically by a PC or a control
center computer it may be useful for the monitor function to be immediately available
when turned on (monitor status = ´01`or ´02`).
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The monitor status can be programmed in EEPROM register 026 as follows:
register 026 Monitor status after turning on
00 = monitor function is turned off
01 = special control function (WED) is turned on
02 = monitor function is turned on
The monitor status (´00`,´01`or ´02`) can also be switched over while operating by
entering <$A0><CR>, <$A1><CR> or <$A2><CR>.
Programming Mode EEPROM
To program an EEPROM register address <xxx> with the content <yy> proceed as
follows:
1) Start the service program (see section service program)
2) To check the value of a register Enter <Rxxx>,<Return> on the terminal.
=> <>xxx: ww> appears on the screen.
3) Program the new register content <yy> (Hex value!!!) in the register
address <xxx> by entering the following on the terminal:
<Pxxx_yy>,<Return>(_=<Space>).
5) Check the new register content by means of the on-screen message:
<>xxx: ww ==> yy >.
If instead of a valid address <xxx> the address <999> is entered, all registers are
programmed with the ex factory preset values. A list of all the EEPROM- addresses can
be found in the following section.
Please note (1): Do not change any registers, which are not described in this manual or
whose functions are unclear or unknwon to you.
Please note (2): Almost all adjustable values (e.g. times etc.) of the Major BOS 4a have
to be programmed as HEX numbers. See section EEPROM-addresses! A conversion
chart for HEX numbers can be found in the attachment!
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EEPROM Adresses
register programming for
volume after power-on
018 circuit 1
019 circuit 2
01A circuit 3
01B circuit 4
01C circuit 5
01D circuit 6
01E circuit 7
01F circuit 8
020 RX-AF output (while transmitting on own circuit) for
bit 0: circuit 1 OFF/ON (0/1)
bit 1: circuit 2 OFF/ON (0/1)
. .
. .
. .
bit 7: circuit 8 OFF/ON (0/1)
for SW V5.2 and newer equal to reg. 054 (selection analogue/digital radio)
021 RX-AF output (while transmitting on a different circuit) for
bit 0: circuit 1 OFF/ON (0/1)
bit 1: circuit 2 OFF/ON (0/1)
. .
. .
. .
bit 7: circuit 8 OFF/ON (0/1)
022 earphone AF (while transmitting on own circuit) for
bit 0: circuit 1 OFF/ON (0/1)
bit 1: circuit 2 OFF/ON (0/1)
. .
. .
. .
bit 7: circuit 8 OFF/ON (0/1)
023 earphone AF (while transmitting on a different circuit) for
bit 0: circuit 1 OFF/ON (0/1)
bit 1: circuit 2 OFF/ON (0/1)
. .
. .
. .
bit 7: circuit 8 OFF/ON (0/1)
024 selected circuits after power-on
bit 0: circuit 1 NO/YES (0/1)
bit 1: circuit 2 NO/YES (0/1)
. .
. .
. .
bit 7: circuit 8 NO/YES (0/1)
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EEPROM Adresses (continued)
register programming for
025 loudspeaker status after power-on
bit 0: circuit 1 OFF/ON (0/1)
bit 1: circuit 2 OFF/ON (0/1)
. .
. .
. .
bit 7: circuit 8 OFF/ON (0/1)
026 monitor status after power-on
00 = monitor function is turned on
01 = special control function (WED) is turned on
02 = monitor function is turned on
027 save selected circuits NO/YES (00/01)
028 save loudspeaker statusses NO/YES (00/01)
029 save volume values NO/YES (00/01)
02A bit 0: receiving AF on the loudspeaker
0 = all circuits without muting
1 = only selected circuits without Muting
bit 1: loudspeaker status if handset is taken
0 = loudspeaker is ON
1 = loudspeaker is OFF
bit 4: earpiece AF is ON, if circuit AND LS are on (0x) or
if circuit is ON (1x)
02B activate respective busy line if circuit is selected
bit 0: circuit 1 NO/YES (0/1)
bit 1: circuit 2 NO/YES (0/1)
. .
. .
. .
bit 7: circuit 8 NO/YES (0/1)
02C activate respective busy line while transmitting on
bit 0: circuit 1 NO/YES (0/1)
bit 1: circuit 2 NO/YES (0/1)
. .
. .
. .
bit 7: circuit 8 NO/YES (0/1)
02D optical busy display for
bit 0: circuit 1: flashing selection display / transmission display (0/1)
bit 1: circuit 2: flashing selection display / transmission display (0/1)
. .
. .
. .
bit 7: circuit 8: flashing selection display / transmission display (0/1)
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EEPROM Adresses (continued)
register programming for
02E PTT keying blocked if circuit is busy
bit 0: circuit 1 NO/YES (0/1)
bit 1: circuit 2 NO/YES (0/1)
. .
. .
. .
bit 7: circuit 8 NO/YES (0/1)
02F loudspeaker AF is muted if circuit is busy
bit 0: circuit 1 NO/YES (0/1)
bit 1: circuit 2 NO/YES (0/1)
. .
. .
. .
bit 7: circuit 8 NO/YES (0/1)
030 bit 0: loudspeaker display if
0 = loudspeaker AF is ON
1 = loudspeaker AF is OFF
bit 1: number of selectable circuits
0 = several circuits simultaneously
1 = only one circuit at a time
assigned radio channel number for
031 UGA(1) / TBBox4(1)
032 UGA(2) / TBBox4(1)
033 UGA(3) / TBBox4(1)
034 UGA(4) / TBBox4(1)
035 UGA(1) / TBBox4(2)
036 UGA(2) / TBBox4(2)
037 UGA(3) / TBBox4(2)
038 UGA(4) / TBBox4(2)
039 tape switching contact TBBox4(1) controlled by
bit 0: circuit 1 NO/YES (0/1)
bit 1: circuit 2 NO/YES (0/1)
. .
. .
. .
bit 7: circuit 8 NO/YES (0/1)
03A tape switching contact TBBox4(2) controlled by
bit 0: circuit 1 NO/YES (0/1)
bit 1: circuit 2 NO/YES (0/1)
. .
. .
. .
bit 7: circuit 8 NO/YES (0/1)
03B delay time for tape switching contact TBBox4(1) [n*100ms]
03C delay time for tape switching contact TBBox4(2) [n*100ms]
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EEPROM-Adresses (continued)
register programming for
loudspeaker is on for n*1sec at DEC1 for
03D circuit 1
03E circuit 2
03F circuit 3
040 circuit 4
041 circuit 5
042 circuit 6
043 circuit 7
044 circuit 8
045 button that is simulated via INP1 on MBOS8a
046 button that is simulated via INP1 on MBOS8a
047 opto-coupler input
digit 1 assignment to
0 = all activated circuits
1..8 = circuit 1..8
digit 2 simulated button / special function
0 = (- no function -)
1 = circuit (selection)
2 = increase volume
3 = decrease volume
4 = mute loudspeaker
5 = call 2
6 = call 1
7 = transmit (gooseneck (GN) microphone)
8 = transmit (headset (HS) microphone)
9 = transmit (ext. signalling device)
B = transmit (GN or HS mic.), microphone switched by PTT2
C = transmit (GN or HS mic.), microphone switched by automatic
headset detection
digit 1+2 00 = switch telephone relay
10 = microphone switching by PTT2 0 = Headset, 1 = Schwanenhals
20 = microphone switching by PTT2 0 = Schwanenhals, 1 = Headset
048 time of long pressing (HEX) nn * 10ms
Example: 64 (HEX) = 100 (DEZ) * 10ms = 1s
049 Muting 1-8 active at PTT on own circuit
04A Muting 1-8 active at PTT on another circuit
04B Muting 1-8 active if no squelch on own circuit
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EEPROM Adresses (continued)
register programming for
04C headset detection with PTT2 input at headset socket (ST10)
PTT2 active ==> headset microphone in use
PTT2 off
==> gooseneck microphone in use
00 = normal PTT function, PTT2 is headset PTT
> 00 = PTT2 is headset detection,
SH-micro is open, HS-micro is active
>00 = INP 1-3 and opto-coupler is SH/HS-PTT
(if programmed)
01 = PTT3 is SH/HS-PTT
02 = keyboard-PTT is SH/HS-PTT
03 = PTT3 and keyboard-PTT is SH/HS-PTT
04 = only opto-coupler is SH/HS_PT (if programmed)
04D transmission PTT turns on loudspeaker (LS)
bit 0: LS is on at PTT with handset microphone NO/YES (0/1)
bit 1: LS is on at PTT with haedset microphone NO/YES (0/1)
bit 2: LS is on at PTT with gooseneck microphone NO/YES (0/1)
bit 3: LS is on at ext. PTT NO/YES (0/1)
bit 4: LS is on at call 1 NO/YES (0/1)
bit 5: LS is on at call 2 NO/YES (0/1)
04E automatic activation of loudspeaker at circuit activation
bit 0-7: circuit 1-8 (active if BIT = 1)
04F automatic deactivation of loudspeaker at circuit deactivation
bit 0-7: circuit 1-8 (active if BIT = 1)
051 threshold value for automatic headset detection by measuring of
the microphone supply voltage
threshold = nn*19.5mV
052 flags for PTT / automatic headset detection by measuring the
microphone supply voltage
00 = HS-Mic, 01 = GN-Mic, 10 = Ext.-NF, 11 = GN / HS
bit 0+1: HS - PTT
bit 2+3: ext. PTT
bit 4+5: GN - PTT
Example: free GN-PTT ext. PTT HS-PTT
standard 00 01 10 00 = 0001 1000 = 18
switching at GN-PTT 00 11 10 00 = 0011 1000 = 38
switching at HS-PTT 00 01 10 11 = 0001 1011 = 1B
GN mic. at HS- / GN-PTT 00 01 10 01 = 0001 1001 = 19
053 muting of earpiece and loudspeaker, if no carrier is present
BIT0 = circuit 1 ..... BIT7 = circuit 8
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EEPROM-Adressen (continued)
register programming for
054 selection analogue or digital radio (SW V5.2 or newer)
0 = analogous radio, 1 = digital radio
bit 0 - 3: radio 1 bis 4
bit 4 - 7: radio 5 bis 8
080 predefined circuits to which forwarding is active upon long
pressing of the loudspeaker button of the respective circuit
BIT0 = circuit 1 ..... BIT7 = circuit 8
081-087 same as register 080, but for LS buttons of circuits 2-8
090-096 button activation BIT0-7: circuit 1-8 (active if BIT = 1)
090 button activation for button: circuit (Kreis)
091 button activation for button: VOL+
092 button activation for button: VOL093 button activation for button: LS
094 button activation for button: call 1 (Ruf 1)
095 button activation for button: call 2 (Ruf 2)
096 button activation for button: transmit (PTT)
100-107 threshold value for AF detection, circuit 1-8
108-10F delay time for NF-Erkennung, circuit 1-8: nn*50ms
Beispiel: 14 (HEX) = 20 (DEZ) * 50ms = 1s
110
forwarding mode for circuits 1 (BIT0) - 8 (BIT7)
BIT=0: AF controlled, BIT=1: carrier controlled
111 blocking time after end of forwarding until new forwarding is
possible: nn * 10ms
Example: 32 (HEX) = 50 (DEZ) * 10ms = 500ms
112 RS1 in addition to RS2 on this circuit
BIT0 = circuit 1 ..... BIT7 = circuit 8
113 RS1 only, if exactly one circuit is activated for forwarding
BIT0 = circuit 1 ..... BIT7 = circuit 8
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Jumpers und Potentiometers
If necessary different configurations and adjustments can be made by using several
jumpers and potentiometers. See Layout.
The jumper functions can be seen in the following chart:
Jumper Function
J1A RX-AF input circuit 1 is 600ohm/3kohm (1/2)
J1B RX-AF input circuit 2 is 600ohm/3kohm (1/2)
J2A RX-AF input circuit 3 is 600ohm/3kohm (1/2)
J2B RX-AF input circuit 4 is 600ohm/3kohm (1/2)
J3A RX-AF input circuit 5 is 600ohm/3kohm (1/2)
J3B RX-AF input circuit 6 is 600ohm/3kohm (1/2)
J4A RX-AF input circuit 7 is 600ohm/3kohm (1/2)
J4B RX-AF input circuit 8 is 600ohm/3kohm (1/2)
J 10 A+B PTT output circuit 1 switches to +12V/GND (1/2)
J 11 A+B PTT output circuit 2 switches to +12V/GND (1/2)
J 12 A+B PTT output circuit 3 switches to +12V/GND (1/2)
J 13 A+B PTT output circuit 4 switches to +12V/GND (1/2)
J 14 A+B PTT output circuit 5 switches to +12V/GND (1/2)
J 15 A+B PTT output circuit 6 switches to +12V/GND (1/2)
J 16 A+B PTT output circuit 7 switches to +12V/GND (1/2)
J 17 A+B PTT output circuit 8 switches to +12V/GND (1/2)
J 18 A+B carrier input circuit 1 is active to +12V/GND (1/2)
J 19 A+B carrier input circuit 2 is active to +12V/GND (1/2)
J 20 A+B carrier input circuit 3 is active to +12V/GND (1/2)
J 21 A+B carrier input circuit 4 is active to +12V/GND (1/2)
J 22 A+B carrier input circuit 5 is active to +12V/GND (1/2)
J 23 A+B carrier input circuit 6 is active to +12V/GND (1/2)
J 24 A+B carrier input circuit 7 is active to +12V/GND (1/2)
J 25 A+B carrier input circuit 8 is active to +12V/GND (1/2)
Poti Function
P1 TX-AF for circuit 1
P2 TX-AF for circuit 2
P3 TX-AF for circuit 3
P4 TX-AF for circuit 4
P5 TX-AF for circuit 5
P6 TX-AF for circuit 6
P7 TX-AF for circuit 7
P8 TX-AF for circuit 8
P9 input sensitivity for gooseneck microphone
P10 input sensitivity for headset microphone
P11 input sensitivity for ext. signalling device
P12 RX-AF for circuit 1
P13 RX-AF for circuit 2
P14 RX-AF for circuit 3
P15 RX-AF for circuit 4
P16 RX-AF for circuit 5
P17 RX-AF for circuit 6
P18 RX-AF for circuit 7
P19 RX-AF for circuit 8
P20 earphone AF for headset
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C200
1
U33
U28
U29
OK1
OK3
OK2
B
A
4
1
1
1 2
2
J10
B
A
4
1
1
1 2
2
J11
B
A
4
1
1
12
2
J1
B
A
4
1
1
1 2
2
J12
B
A
4
1
1
1 2
2
J13
B
A
4
1
1
1 2
2
J14
B
A
4
1
1
1 2
2
J15
B
A
4
1
1
1 2
2
J16
ST13
B
A
4
1
1
1 2
2
J17
B
A
4
1
1
1 2
2
J25
B
A
4
1
1
1 2
2
J24
B
A
4
1
1
1 2
2
J23
B
A
4
1
1
1 2
2
J22
B
A
4
1
1
1 2
2
J21
R210
B
A
4
1
1
1 2
2
J19
B
A
4
1
1
1 2
2
J20
B
A
4
1
1
12
2
J2
B
A
4
1
1
12
2
J3
B
A
4
1
1
12
2
J4
B
A
4
1
1
1 2
2
J18
CLK
DATA
VPP
+5V
MP0
MP1
1
U1
D2
D4
D1
D3
D6
D7
D5
2614
13
1
ST15
P6
P9
P5
P8
P1
P20
P19
P17
P18
P16
P15
P3
P14
P13
P12
P4
P7
P10
P11
U21
U22
6 1
ST14
6 1
ST9
6 1
ST14A
ST2
ST3
ST4
ST6
ST5
ST7
1
3
45
678
2
T10
1
3
45
678
2
T5
1
3
45
678
2
T14
1
3
45
678
2
T17
1
3
45
678
2
T3
1
3
45
678
2
T9
1
3
45
678
2
T4
1
3
45
678
2
T16
1
3
45
678
2
T11
1
3
45
678
2
T15
1
3
45
678
2
T13
1
3
45
678
2
T12
1
3
45
678
2
T8
1
3
45
678
2
T7
1
3
45
678
2
T6
1
3
45
678
2
T18
1
3
45
678
2
T2
D19
D20
D17
D18
U30
U11
U10
U12
R73
R1
R99
R2
R93
R86
R106
R107
R12
R3
R100
R51
R87
R6
R88
R101
R5
R56
R94
R160
R46
R74
R77
P2
R80
R112
R95
R45
R47
R83
R30
R76
R194
R9
R4
R64
R193
R71
R65
R62
R44
R48
R153
R182
R26
R103
R61
R37
R50
R68
R67
R25
R32
R8
R7
R11
R10
R41
R109F
R109H
R109D
R122E
R33
R109C
R104
R17
R109A
R29
R27
R28
R40
R53
R38
R39
R43
R42
R142
R110
R82
R113
R81
R140
R52
R72
R180
R145
R143
R141
R139
R137
R138
R136
R97
R84
R134
R75
R132
R69
R66
R78
R169
R173
R175
R63
R177
R109E
R114C
R60
R85
R133
R130
R98
R144
R131
R122A
R114B
R34
R79
R35
R135
R114A
R171
R192
R129
R91
R109G
R115
R109B
R92
R54
R114F
R49
R70
R127
R148
R152
R151
R149
R150
R165
R162
R163
R168
R166
R167
R164
R31
R22
R23
R18
R15
R24
R19
R20
R16
R14
R21
R13
R105
R90
R96
R102
R108
R126
R128
R125
R158
R156
R159
R157
R161
R114G
R122C
R122B
R114D
R114E
R122D
R122F
R122G
R122H
R111
R116
R174
R176
R172
R170
R123
R179
R178
R114H
R199
R197
R195
R198
R187
R185
R186
R181
R184
R196
R183
C45
C97
C15
C7
C48
C91
C96
C5
C49
C1
C23
C43
C11
C34
C93
C90
C113
C3
C9
C13
C40
U3
U17
U16
U8
U7
U4
U9
U5
U19
U27
U15
C77
C4
C6
C39
C68
C80
C76
C84
C65
C36
C62
C134
C35
C28
C38
C50
C130
C98
C2
C46
C53
C122
C33
C56
C121
C135
C21
C133
C18
C44
C108
C20
C73
C70
C8
C67
C64
C61
C19
C63
C60
C31
C29
C32
C86
C94
C132
C57
C37
C54
C51
C47
C66
C69
C72
C52
C55
C87
C126
C78
C22
C74
C82
C95
C59
C58
C127
C141
C128
C71
C109
1
3
45
678
2
T1
C83
C16
C14
C30
C12
C10
C112
C140
C137
C138
C142
C79
C124
C123
C139
C111
C110
C88
C41
C42
C81
C85
C89
C120
OK5
U25
Q1
U23
1
ST11
1
U26
U34
OK4
U31
R30A
1
U6
GND
1
U2
D8
1
ST16
2614
131
ST19
C92
4
1
ST12
1
U20
8 1
ST10
ST1
C75
ST8
D22
D9
U13
F1
R55
U18
U14
C136
R211
R200
R202
R201
Board Layout
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Adjustment Instructions
The AF levels have already been correctly preadjusted ex factory. If necessary please
follow these instructions.
1) Adjustment RX inputs (radio channels 1..8) (receiving radio)
a) At the RX-input radio channel 1 ( and 2-8) feed in the AF level
provided by the radio device at 1000 Hz.
b) Select radio channel 1 (2-8)
c) Connect the level meter to the RX-AF-output H_Sum (ST15/pin6)
(GND is MP0).
d) Adjust the level with potentiometer P12 (P13 - P19).
The level should be 500mVeff (=-3,8 dBm).
e) After finishing the adjustment:
repeat steps a) to d) correspondingly for the radio channels 2 to 8.
2) Adjustment TX outputs (radio channels 1..8) (transmitting radio)
a) Connect the level meter and the radio device at the TX output radio
channel 1(2-8).
b) Transmit encoder 1 (1750Hz) on radio channel 1(2-8).
c) Adjust the level with the potentiometer P1 (P2 - P8).
d) After finishing the adjustment:
repeat steps a) to d) correspondingly for the radio channels 2 to 8.
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Sockets Pinout
All sockets of the Major shown from rear view.
Layout FK 1- 8 (radio channels)
ST1 - 8
RX-AF input (earphone +) 1
RX-AF input (earphone -) 2
squelch input (carrier) 3
GND (ground) 4
busy lines 5
(Do not connect to FuG!)
PTT output 6
(PTT out, open collector max. 100mA)
TX-AF output (mod +) 7
TX-AF output (mod -) 8
The AF- in/outputs are equipped with transformers and
hence potential-free.
Layout Power
PWR
12 VDC, max 1.5 A,
center: positive pole, ring: GND
Layout RS 232
ST10
TXD (RS232) 1
RXD (RS232) 2
GND 3
PTT input 4
ext. signal source (PTT3, to GND)
RX-AF output LS sum 5
(loudspeaker AF, activated radio channels)
RX-AF output H sum 6
(earphone AF, selected radio channels)
AF input, ext. source. Ext_AF (mod +) 7
AF input, ext. source. Ext_AF (mod -) 8
Layout TB Audio Tape
ST12
GND (ground) 1
audio tape switching contact 2
AF output A (mod. +) 3
AF output B (mod. -) 4
The AF output A-B is equipped with a transformer and
hence potential-free.
Layout I2C
ST9
power supply. (+12VDC)
1
power supply. (+12VDC) 2
SDA (I2C-bus-data) 3
SCL (I2C-bus-clock 4
GND (ground) 5
GND (ground) 6
Layout PTT (Headset Switching)
ST14A
PTT input, HS (PTT2, to GND) 1
+batt. output., supply voltage 2
for headset-headset switching PCB
control pin 3
for headset-headset switching PCB
opto-coupler input (anode +) 4
opto-coupler Input (cathode -) 5
GND (PTT2 ground) 6
Layout Headset
ST14
PTT input HS (PTT2, to GND) 1
AF input HS (micro +) 2
AF output HS (headset +) 3
AF output HS-GND (headset -) 4
AF input HS-GND (micro -) 5
GND (PTT2 ground) 6
Two connectors for headsets are available. A headset
can be connected to ST14. An external PTT button (e.g.
foot switch) can be connected to ST14A.
ST9 ST10ST12PWR
ST4 ST1ST2ST3
ST14A
ST14
ST8 ST5ST6ST7
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Sockets Pinout (continued)
Socket ST15 for ext. RX-AF amplifier (internal 26-pin latch socket)
pin 1 RX-AF output circuit 1 LS1 (loudspeaker AF)
pin 2 RX-AF output circuit 2 LS2 (loudspeaker AF)
pin 3 RX-AF output circuit 3 LS3 (loudspeaker AF)
pin 4 RX-AF output circuit 4 LS4 (loudspeaker AF)
pin 5 RX-AF output circuit 5 LS5 (loudspeaker AF)
pin 6 RX-AF output circuit 6 LS6 (loudspeaker AF)
pin 7 RX-AF output circuit 7 LS7 (loudspeaker AF)
pin 8 RX-AF output circuit 8 LS8 (loudspeaker AF)
pin 9 - 12 Mute switching contact for LS1 to LS4
pin 13 - 21 GND (ground for RX-AF outputs)
pin 22 - 25 Mute switching contact for LS5 to LS8
Socket ST19 (internal 26-pin latch socket)
connection for optional switching matrix
Connection Cable to the PC (RS232, Ord.No. 635090)
ST6 Function 9pin COM at PC
1 TxD 2
2 RxD 3
3 GND 5
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Technical Data
Supply
voltage +12VDC -15% +25%
current consumption typ. 350 mA (max. 650 mA)
Input level (RX in), (from circuit 1..8)
factory settings 775 mV (= 0 dBm) / 600 ohm
500 mV (= -3,8 dBm) / 200 ohm
adjustment range (with poti P12..P19) - 8 dBm to +3 dBm
input impedance 600 ohm or 3 kohm
Output level (TX out), (to circuit 1..8)
factory settings 500 mV (= - 3,8 dBm) / 200 ohm
adjustment range (with poti P1..P8) - 9 dBm to +1 dBm / 200 ohm
- 5 dBm to +5 dBm / 600 ohm
output impedance (when transmitting) approx. 200 ohm
output impedance (when receiving) high-resistance (open)
Earpphone output level (RX out, to headset)
factory settings - 10 dBm (an 200 ohm)
adjustment range (with poti P20) - 18 dBm bis - 8 dBm (an 200 ohm)
output impedance ca. 150 ohm
Microphone input MIC2 (TX in, electret, routed from handset/headset)
sensitivity ex factory 4 mV (= - 46 dBm)
adjustment range (with poti P10) - 52 dBm bis - 41 dBm
input impedance approx. 700 ohm
AF input Ext_NF (TX in, routed from e.g. external signalling device)
sensitivity ex factory 500 mV (= - 3,8 dBm)
adjustment range (with poti P11) - 7 dBm bis - 1 dBm
output impedance ca. 20 kohm
AF output LS_Sum (RX out, routed to e.g. external loudspeaker amplifier)
at max. volume - 14 dBm (an 600 ohm)
output impedance ca. 1 kohm
AF output H_Sum (RX out, routed to e.g. external headset)
for selected curcuit - 13 dBm (an 600 ohm)
output impedance ca. 1 kohm
AF outputs LS_i (RX out, routed to e.g. external loudspeaker amplifier)
at max. volume 250 mV (an 10 kohm)
output impedance ca. 10 kohm
Weight ca. 1750 g
Dimensions (without gooseneck microphone)
width x depth x height 245 x 220 x 90 mm
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Please read the operating instructions carefully before installation and setup.
The relevant regulations must be complied to when working with 230V line voltage, two-wirelines, four-wire-lines and ISDN-lines. It is also very important to comply to the regulations
and safety instructions of working with radio installations.
Please comply to the following safety rules:
- All components may only be mounted and maintained when power is off.
- The modules may only be activated if they are built in a housing and are scoop-proof.
- Devices which are operated with external voltage - especially mains voltage - may only
be opened when they have been disconnected from the voltage source or mains.
- All connecting cables of the electronic devices must be checked for damage regularly
and must be exchanged if damaged.
- Absolutely comply to the regular inspections required by law according to VDE 0701
and 0702 for line-operated devices.
- Tools must not be used near or directly at concealed or visible power lines and conductor
paths and also not at and in devices using external voltage – especially mains voltage as long as the power supply voltage has not been turned off and all capacitors have been
discharged. Electrolytic capacitors can be still charged for a long time after turning off.
- When using components, modules, devices or circuits and equipment the threshold
values of voltage, current and power consumption specified in the technical data must
absolutely be complied to. Exceeding these threshold values (even if only briefly) can
lead to significant damage.
- The devices, components or circuits described in this manual are only adapted for the
specified usage. If you are not sure about the purpose of the product, please ask your
specialized dealer.
- The installation and setup have to be carried out by professional personnel.
Returning of Old Equipment
According to German law concerning electronic devices old devices cannot be disposed off
as regular waste. Our devices are classified for commercial use only. According to § 11 of
our general terms of payment and delivery, as of November 2005, the purchasers or users
are obliged to return old equipment produced by us free of cost. FunkTronic GmbH will
dispose of this old equipment at its own expense according to regulations.
Please send old equipment for disposal to: FunkTronic GmbH
Breitwiesenstraße 4
36381 Schlüchtern
GERMANY
>>> Important hint: freight forward deliveries cannot be accepted by us.
February 2nd , 2006
Subject to change, Errors excepted!
General Safety Remarks
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Release Notes
10.09.2012 - first English version of Major BOS 8a manual released
25.02.2014 - pinout of socket ST14 revised
13.03.2014 - order information (RS232 cable) added
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Appendix
Conversion chart: hexadecimal (HEX) <--> decimal (DEC)
The corresponding HEX number (2 digits, HEX numbers are often indicated by a preceding '$' sign) to
a common DEC number (<256) or vice versa can be directly deduced from this table:
By using this chart, also higher decimal numbers (255 < x < 65536) can be converted to the corresponding
4-digit HEX number (h3h2h1h0):
HEX number (h3h2) = DEC number DIV 256 (high-byte)
HEX number (h1h0) = DEC number MOD 256 (low-byte)
Here, the operation
DIV is a division yielding the whole number part of the division (before the decimal
point, no rounding up) and the operation MOD yields the rest of the division.
As a proof, the following must be true:
DEC number = h3 x 4096 + h2 x 256 + h1 x 16 + h
0
Example: DEC number = 4800 --> HEX number = ?
1) HEX number(h3h2) = 4800 DIV 256 = 18 (DEC number) = $12 (Hex) (high-byte)
2) HEX number(h1h0) = 4800 MOD 256 = 192 (DEC number) = $C0 (Hex) (low-byte)
==> HEX number(h3h2h1h0) = $12C0
HEX $x0 $x1 $x2 $x3 $x4 $x5 $x6 $x7 $x8 $x9 $xA $xB $xC $xD $xE $xF
$0x 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
$1x 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
$2x 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47
$3x 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63
$4x 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79
$5x 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95
$6x 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111
$7x 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127
$8x 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143
$9x 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159
$Ax 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175
$Bx 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191
$Cx 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207
$Dx 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223
$Ex 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239
$Fx 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255
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