A07A2200S
Adjust the output of the LF generator at <1KHz to a level
corresponding to a frequency deviation of 40 KHz including
pilot tone.
Measure the peak value in channel B after the demodulator
and stereo encoder by means of the noise meter (without the
weighting network ).
For the remaining procedure , see the method used for
monophonic operation
In case of stereophonic broadcast in accordance to the IEC 244-13 rule the reference power is
moved highwards of 1.9 dB in relation to the corresponding REC. ITU-R BS.412-7.
REMOTE CONTROL
8.1 PC connections
The transmitter can be connected to a Personal Computer through a three wires serial cable.
There are three serial ports: the first (COM1), placed on the front panel works as monitor for a
connection to a PC, the second (COM2), placed on the back needs for the connection to a possible
power amplifier, with the third (COM3) it’s possible to connect a modem linked to a telephone line
or to do the connection of N+1 transmitters.
The PC must have:
processor : PENTIUM o sup.
Operative system : WIN3.1 / WIN95 / WIN98
RAM : 32MB
Non volatile memory : 32MB
Graphic : SVGA 600x800/768x1024
CD reader
8.2 COM1
If one wishes to connect a PC to replace the transmitter keyboard and thus have a wider and easier
communication to every visualisation and control function, it’s possible to connect the DB9 front
port (COM1) to a serial cable with at least three wires to the serial port of a personal computer
where the communicating software provided on the transmitter enclosed CD has been already
loaded. If unready it is sufficient to start the SETUP and automatically the software is installed as to
create an icon (XPT-50), which will need for the program start.
Once started it will appear on the display:
380 221 R02 Pag. 43
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