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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

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Summary of Contents for 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 2: ......

Page 3: ... 0 2 7 0 3 6 0 4 2 6 2 2 5 3 2 4 4 2 7 1 Clusters Gain Adjustment 0 30 dB Clusters Selectivity 10 MHz 12 dB Input attenuators UHF VHF 0 20 dB Max Input Level UHF 90 dBµV Gain UHF 55 dB Gain VHF 45 dB Max Output Level 123 dBµV Noise Figure VHF 6 5 UHF 6 5 Return Loss In Out 12 dB Remote Power Supply VHF UHF 12 24 VDC 100 mA Supply Voltage 230VAC 10 Max Power Consumption 12 W Programming Port USB Di...

Page 4: ...m 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 it is possible to download a special free PC compatible software conceived to operate with the AT450SAW amplifier from your PC Hardware requirements PC Windows compatible with USB interface...

Page 5: ...le modes Using the UP DOWN and ENTER keys you can see the factory set parameters and program new ones LED fixedly on Parameters visualisation LED blinking slowly Parameters configuration LED blinking rapidly Not desirable programming or setting To access the UHF input attenuators programming menu press the DOWN key for 3 seconds To access the clusters programming and UHF VHF output level adjustmen...

Page 6: ...nd UHF3 input attenuators press UP or DOWN to choose the desired attenuator then follow the described procedure above To leave the remote power supply setting menu press the UP and DOWN keys simultaneously the display will return to POWER ON status 2 selection of the cluster groups configuration There are 9 possible configurations Input UHF1 UHF2 UHF3 Cluster groups 10 0 0 9 0 1 8 0 2 7 0 3 6 0 4 ...

Page 7: ...king This indicates the parameters setting mode press the UP and DOWN keys simultaneously the display will show the word o F press ENTER again to confirm your choice 4 Clusters amplitude setting The bandwidth from 1 to 6 channels and the attenuation level from 0 to 30 dB Typ of the 10 clusters can be independently adjusted For the setting you need to select the desired cluster F1 F0 and then adjus...

Page 8: ...ys simultaneously the display will show the word o F Note Channel overlapping is possible and it is shown on the display by the rapid blinking of the overlapped clusters Note The setting of the F1 cluster s start channel at the value 21 and of the stop channel at the value 24 while the F2 cluster has the start channel at the value 24 and the stop channel at the value 26 implicates an overlapping o...

Page 9: ...rd A D J followed by a moving cursor Wait till the procedure is finished The SELF ALIGNMENT algorithm provides an UHF output level standard of 100 dBµV With input UHF signals 70 dBµV the inter stage attenuator will be set at 10dB level This allows an output level range that can be set from 90 dBµV to 110 dBµV With input UHF signals 60 dBµV and 70 dBµV the inter stage attenuator will be set at 0 dB...

Page 10: ...onfirm your choice To switch on the remote power supply or to check its presence at the UHF VHF and SAT IF inputs of the amplifier press UP or DOWN the UHF1 UHF2 UHF3 bI II bIII inputs will be sequentially viewed on the display for each input oF means that input doesn t provide remote power supply for each input on mean that input provides remote power supply To change the mode press ENTER press U...

Page 11: ...ly entered The amplifier will need to be reprogrammed at this stage Procedure disconnect the mains cable from the 220V electric system keep pressing the ENTER key in the meantime reconnect the mains cable wait till the display indicates 4 hyphens it means that the reset was successful then release the ENTER key the display will return to POWER ON status now the amplifier is programmable again ...

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