Publicité
■ MENU DESCRIPTION
0. Auto Configure
Accessed from the initial screen after pressing the right arrow button for 5 seconds.
It allows performing an automatic configuration of the equipment:
• All channels present on each VHF / UHF input that have a minimum level are detected.
• Same channel detected on different inputs, only the one with the highest input level will be activated.
• The pre-amplifiers of each VHF / UHF input are configured, according to the input levels.
• The output level of the device is configured according to the number of processed channels.
1. IN-VHF, IN-UHF1, IN-UHF2
This menu is repeated for each of the VHF / UHF inputs of the Stellar 300.
1.1 Pre-Amplifier
Enable or disable the pre-amplifier action in each VHF / UHF input of the module.
The pre-amplifier option increases the signal power of that input before the filtering and conversion
blocks. An excessive level of the channels to process in this part reaching saturation, or an increase
of noise level, can degrade signal quality. Therefore, it is recommended to know about signal quality
on the input side (gain, tilt, bandwidth and noise figure) when applying pre-amplifier to measure its
impact on the output side.
Recommendation
NOTE: In the same RF input there could be low level channels along with other high
level channels, wanting both to be processed. The pre-amplifier action could disturbed
the high level channels degrading its signal quality. All the channels of the RF input
to be processed must be considered to decide to turn on / off its pre-amplifier.
1.2 Antenna Power
Each input connector is capable of supplying 12V, 100mA (max) to an active antenna or an external
pre-amplifier. This menu allows the user to turn on / off the power on each input port.
1.3 Auto Scan
Automatic channel search. First, it must be configured between which channels is done the search.
The module will remove the whole channel list of that RF input and will test each channel presence.
Channels with a minimal signal level (> 50 dBµV) will be added to that RF input channel list, with the
same channel at the output. In case the output channel would be used by another RF input, the
channel won't be added to the list. Then, the user will be able to edit the detected channels, changing,
removing, or adding new ones.
1.4 Channel list
Each VHF / UHF input will have its own list of managed channels, displaying on the LCD:
• IN-UHF 1 refers to the port of the signal input.
• Ch21 refers to the input channel.
• 21 refers to the output channel.
• 73 dBµV is the signal level automatically measured by the Stellar 300.
Up and down arrows on the keyboard can be used to move through the channel list (maximum. 32).
1.5 Add a new channel
To add a new channel, get to this menu and press the right arrow.
Select the input channel with the up and down arrows.
Once the input channel has been chosen, press the right arrow to select the output channel.
When configuring the output channel, it will not be allowed to select an already used channel.
Once the output channel has been chosen, press the right arrow to save it.
After saving the new channel, it is accessible within the channel list of that input.
: Turn on the Pre-Amplifier only when the input signal level of one of the
channels to process of that input, is too low (lower than 60 dBµV).
15
IN-UHF 1
Ch21->21 73 dBµV
Publicité
