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If the device is con fi gured in frequency mode,
the output menu will display the channel central
frequency that is being programmed. For example:
The frequency value is programmed digit by digit,
moving to the next digit by pressing
press), and changing its value by pressing
. When the cursor is placed over the decimal part,
only one of the next four values can be selected:
.00 MHz
.25 MHz
.50 MHz
.75 Mhz
Finally, by pressing the key
once more, the digits
to control the output level are selected. Use keys
and
to modifi ed its value. Set 99 to obtain
the max. oputput level. All the way down up to
the value 00 the output level is 15 dB below its
maximum.
b. Channel Tables Menu
Press the
key to gain access to the second menu
allowing channel table selection that will be used
for programming the output channels from the
previous menu. Frequency mode selection is also
allowed. The 9 possible tables are: CCIR N.Z. Ind,
China Taiwan, Chile M/N, Italy, France, Russia (OIR),
Ireland, South Africa, Poland and Australia.
Select one of the modulators (A or B) of the TWIN
unit: fi rst, press the key
keys
and
to select A or B. Next, by pressing the
(short
key
again, the name of the channels table will
or
fl ash, and then can be modifi ed with
c. Video Menu
Pressing
accesses the following menu. In
this menu it is possible to confi gure the video
parameters and the TV standard (depending on
the audio carrier distance relative to that of the
video and modulation). Video modulation depth
(VMD) and audio carrier frequency (FAud) values
can be modi fi ed.
Initially, a short press on the parameter selection
key
menu; then use keys
By a short press on the parameter selection key ,
once, and second, use
the video modulation (VMD) sub-menu is accessed.
Keys
whose range of allowed values are indicated
or
keys.
below (they are modulation depth values provided
that the video signal input level is 1 Vpp). If the
modulator is programmed in L norm, the allowed
values are: 87%, 89.5%, 91.0% and 93.0%. For any
other standard, these values are: 68.5%, 72.0%,
75.5%, 77.0%, 79.0%, 80.0%, 81.0% and 82.5%.
Short pressing the parameter selection key
accesses the audio carrier carrier frequency
selection sub-menu (FAud) (norm or standard). To
modify the norm or standard, press
the desired value appears, amongst the following:
FAud:
4.5 MHz
5.5 MHz
6.0 MHz
6.5 MHz
NORM L
gives access to the A/B modulator selection
and
to select A or B.
or
allow modi fi cation of the video level,
or
Ac/Vc relative frequency (MHz)
4.5 MHz, Standard M/N
5.5 MHz, Standard B/G
6.0 MHz, Standard I
6.5 MHz, Standard D/K
6.5 MHz, L Norm
15
EN
un t i l
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