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Summary of Contents for Lem Elettronica AT450SAW
- Page 1 AT450SAW Programmable Selective Amplifier LEMELETTRONICA srl – Via Grezze 38 – 25015 Desenzano del Garda (BS) ITALY Tel. +39 030-9120006 Fax +39 030-9123035 www.lemelettronica.it...
- Page 3 Technical Specifications N° Input BI/BII (40… 108 MHz) N° Input BIII/DAB (170… 320 MHz) N° Programmable Input UHF (470… 790 MHz) N° Programmable Clusters (21… 60) N° Channel per Cluster 1… 6 (8… 48 MHz) UHF Cluster Combination UHF1 UHF2 UHF3 Clusters Gain Adjustment 0…...
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Page 4: Installation And Start-Up
The use of other power packs can cause malfunctioning and irreparable damages which will invalidate any warranties. Programming It is possible to programme the AT450SAW from either the front panel controls or from a the GUI software which is downloadable free of charge from our website LEM Graphic User Interface (GUI) From the download area in our website http://www.lemelettronica.it. - Page 5 Manual Programming (from the keys on the front panel of the amplifier) At start-up ( i.e. connection of the mains cable) the letter “b” will appear on the display. It indicates the microprocessor boot phase. Then the release “Firmware” will be indicated for a while to confirm the correct system initialization.
- Page 6 1) UHF inputs’ attenuator This is manually adjustable from 0 to –20 dB. To access the UHF attenuators’ programming menu: - press the “DOWN” key for 3 seconds. U1.00. - the display will show the word : this indicates that the UHF1 input attenuation level is at zero.
- Page 7 To select a different configuration: - press “ENTER” : the display starts blinking. - press “UP” or “DOWN” to choose the desired configuration. - press “ENTER” again to confirm your choice: the display will return with a fixed light and it will show the selected configuration.
- Page 8 To reset the cluster’s start channel: - select the desired cluster on the display. - the lighting of the second LED confirms that you are at the cluster’s start channel. - press the “ENTER” key .The display will start blinking. - press “UP”...
- Page 9 6) B II (and BI) and B III input level adjustment. The B II and B III inputs are provided with level attenuators from 0 to –20 dB. Procedure b1.00. b3.00. - press the “UP” or “DOWN” key to select on the display.
- Page 10 7) Remote power supply Each “RF” input can supply 12 or 24 VDC power, 100mA. * *amount of the total consumption of all the remote power supplied inputs. Procedure - You can enter into the remote power supply setting menu only if the display is in “POWER ON” status.
- Page 11 8) Amplifier’s initial setting restoration The amplifier can be reset at any time, this restores the initial factory setting. This will remove all of the individual settings that have been previously entered. The amplifier will need to be reprogrammed at this stage.
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