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Programming the TPC Processors
2. THE SETTING SCREENS
2.1 - The Input Signal Parameters Screen
This screen appears when you select the Input option in the Settings menu. It has
two pages, through which the different parameters and selection options are displayed
(the scroll arrows
and
at the lower line warn that you are in a page). Remember
that the change of page is accomplished by the keys ↑ or ↓ .
When you select the option the first page appears :
1 Inp.Freq. :
2
Ch :
3
Signal Type:
‘
SEND
"Input Frequency" : Is the video carrier, in MHz, of the input channel of the
processor —if the channel is digital, is the central frequency. You can enter the
figure whether directly (see paragraph 1.3 on page 9 of the Basic Handling
guide) or using the "Ch" option.
The selection step is 0.125 MHz.
"Ch" : This option is only applicable if the channel is analog. When choosing it,
the Channel Selection screen appears. This screen allows to make the frequency
selection in a secure way through two pick lists: "TV System" and "TV Channel".
1 Sys: B/G
2
Ch: 48→687.25MHz
‘
DONE
Use the DONE command (key
command to not validate. The screen closes and the above first page appears
again (it will show the new value of Input Frequency, if this has been changed).
"Signal Type" : You must indicate here the type of input channel: analog or digital.
Open the pick list by using the
SEL
options appears. Place the slide on the appropriate option and press
Programming the TPC Processors
2.2 - The Output Signal Parameters Screen
This screen appears when you select the Output option in the Settings menu. Here
you can do the following selections and adjustments:
1 Out.Freq. :
2
Ch :
3
Atten. :
‘
SEND
"Output Frequency" : Is the video carrier, in MHz, of the output channel of the
processor —if the channel is digital
is 0.125 MHz.
"Ch" : It is applicable what said for the input frequency.
"Attenuation" : Is the attenuation for the channel output level. Setting is carried out
in real time through a slide icon. To state the setting value of the level you must
use a level meter.
(
)
*
In order to avoid tuning problems in the Set Top Box (STB) of the subscribers, when
the TPC module is used as digital channel converter the output channel should be
lower than the input channel.
3. THE INFORMATION SCREENS
They provide information about working of the connected processor. Information is
distributed in two screens which are related to the two options of the Info menu:
Alarms and Details.
3.1 - The Alarms Screen
Informs about the existence of failures in the internal components of the module or
bad processing of the signal. Character "X" warns there is an alarm situation and "0"
means the status or working are correct:
Status
Hardware:
Use the OK command (key
) to close the screen.
687.250
ANALOG
Ÿ
SEL
SEL
) to validate the selection, or the CANCEL
command. A list with the Analog and Digital
.
471.250
‘
:::::::
::::
SEL
(
)
*
, is the central frequency. The selection step
ALARMS
: 0
: X
OK
Programming the TPC Processors
Press key ↓ to go to the second page of the Input Signal Parameters screen. Here
you can do the following selections:
4
Ch. Width :
5
AGC :
‘
ž
SEND
"Channel Width" : Is the width of the input channel. Use the SEL command to
open a pick list with the 7 MHz and 8 MHz options. Place the slide on the
appropriate option and press
"AGC" : Here you must indicate whether the automatic gain control (AGC) must
be operative or not. Use the SEL command to open a pick list with the ON and
OFF options. Place the slide on the desired option and press
the OFF option (nonoperative AGC) must only be selected for System L channels.
For channels of the rest of analog TV systems (B/G, D/K, I) and for digital
channels (DVB-T and DVB-C standards), you must select the ON option (AGC
being operative).
"Input Level" : This option appears only if in the previous AGC option you selected
OFF (because the input channel is L system's). It is used to adjust the gain of the
processor's input circiuit in order to get an 80 dBµV level at the output of the
processor. The setting is carried out in real time through a slide icon: when you
move the slide with the keys ← y → , the output level of the peocessor changes
at the same time. A level meter must be connected at the loop output port (the
loop input port being terminated with 75 ohm). Prior to the adjustment you must
check that the output attenuation of the processor is set to minimum; for this, go to
the third line of the Output Signal Parameters screen, see next page, and slide the
arrow up to the right end of the icon.
5
Programming the TPC Processors
3.2 - The Details Screen
This screen identifies the module and displays the firmware version :
Use the OK command (key
4. THE DIVERS SCREENS
It is one screen that befit an operation that has already described in the Basic
Handling guide : Use of Configurations.
4.1 - The Configurations Screen
On pages 12/13 of the Basic Handling guide was defined what is a module
configuration, were indicated the advantages of its use and were described the
processes of creation and utilization through the screens that appear when you
select the Save and Recall commands in the General menu. Therefore it is not to
add more information.
7
8 MHz
4
Ch. Width :
ON
5
AGC :
6 Inp.Lev :
‘
SEL
SEND
.
DETAILS
TPC-110
F1.00
OK
) to close the screen.
IKUSI - Angel Iglesias, S.A.
Paseo Miramón, 170
20009 San Sebastián
SPAIN
Tel.: +34 943 44 88 00
Fax: +34 943 44 88 19
www.ikusi.com
8 MHz
OFF
‘
:::::::
::::
ž
SEL
. As general rule,
6
SPI-300 / TPC -A-
(GB)
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