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- Page 1 Date 2023-11-22 Manual LNF-PBA Low Noise Power Block Low Noise Factory AB Nellickevägen 24, info@lownoisefactory.com 412 63 Göteborg, Sweden lownoisefactory.com...
- Page 2 Rear Panel..............................5 Installation ................................ 5 Mains Voltage and Fusing ..........................6 6.1. LNF-PBA 115/230 VAC version - Mains Voltage and Fusing ................ 6 6.2. LNF-PBA 100 VAC version ..........................7 Using the Instrument ............................7 Maintenance and Service ..........................8 Pinout .................................
- Page 3 1. Introduction LNF-PBA is a ±12 VDC low noise linear power supply designed to power LNF’s line of HEMT power supplies. It is provided in two versions: one which accepts the mains voltage of either 115/230 VAC (selectable on the rear panel) or another which operates at 100 VAC.
- Page 4 4. Front and Rear Panels 4.1. Front Panel Both (115/230 and 100 VAC) versions of the LNF-PBA have the same front panel. For details, please see Figure 1. Readout of current load from +12 VDC 8 x ±12 VDC output connectors...
- Page 5 Figure 2 and Figure 3. Selected mains voltage indicator/fuse cartridge Mains switch AC inlet Figure 2 LNF-PBA 155/230 VAC version - rear panel Mains switch Fuse cartridge AC inlet Figure 3 LNF-PBA 100 VAC version - rear panel 5. Installation The instrument must be installed on a flat and solid surface with at least 5 cm of clearance on the topside and right side where the air-intake and outlet are located.
- Page 6 Low Noise Power Block 6. Mains Voltage and Fusing 6.1. LNF-PBA 115/230 VAC version - Mains Voltage and Fusing The instrument can be used with either 115 or 230 V mains voltage. The mains voltage is selected by configuring the Power Entry Module on the rear panel. It is preconfigured to the voltage of your country when you receive the instrument.
- Page 7 Fuses Figure 5 LNF-PBA 115/230 VAC version - fuse cartridge 6.2. LNF-PBA 100 VAC version This version of the LNF-PBA does not have an option to be reconfigured – it is preconfigured to 100 VAC only. 7. Using the Instrument The LNF-PBA uses a transformer, rectifiers, and regulators to convert mains AC to ±12 VDC needed for LNF’s...
- Page 8 There are no serviceable parts in the instrument. If the ventilation holes are clogged with dust, disconnect the instrument from the mains supply and use a dry cloth to gently clear the ventilation holes. 9. Pinout +12 V -12 V 3-Pin male M8 connector seen from outside LNF-PBA chassis Low Noise Factory AB Nellickevägen 24, info@lownoisefactory.com lownoisefactory.com...
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