
- 8 -
mbos2a2 (06.09.2012)
Kompetent für Elektroniksysteme
mbos2a2 (06.09.2012)
- 9 -
Kompetent für Elektroniksysteme
Potentiometers
Using the manual potentiometers located the volume of the different radio circuits can be set
individually. Furthermore, the overall volume of the Major can be controlled.
The functions can be extracted from the table below:
Poti
Function / Volume Level
P1
RX-AF (Listening) Circuit 1
P2
RX-AF (Listening) Circuit 2
P3
RX-AF (Listening) Circuit 3
P4
RX-AF (Listening) Circuit 4
P5
AF of loudspeaker, (total)
Service Program
For Major BOS 2a2 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/D 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