User’s Manual PA 300 Peaking Amplifier 68-1108-01 B 12 08
Precautions Safety Instructions • English This symbol is intended to alert the user of important operating and maintenance (servicing) instructions in the literature provided with the equipment. This symbol is intended to alert the user of the presence of uninsulated dangerous voltage within the product’s enclosure that may present a risk of electric shock. Caution Read Instructions • Read and understand all safety and operating instructions before using the equipment.
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Table of Contents Chapter One • Introduction ................................................... 1-1 About this Manual ..................................................................... 1-2 About the PA 300 . ...................................................................... 1-2 Features ......................................................................................... 1-2 Chapter Two • Installation and Operation .................. 2-1 Installation Overview . ...............................
Table of Contents, cont’d All trademarks mentioned in this manual are the properties of their respective owners.
PA 300 1 Chapter One Introduction About this Manual About the PA 300 Features
Introduction About this Manual This manual contains information about the Extron PA 300 peaking amplifier, and includes information on how to install, operate and troubleshoot the unit. About the PA 300 The PA 300 is an ultra high performance RGB peaking amplifier capable of driving a 1600 x 1200 resolution computer signal over 600 feet (185 m) using Extron Mini HR cables, or 1000 feet (300 m) using Extron RG6 cable. The PA 300 is compatible with both RGB and HDTV component signals.
PA 300 2 Chapter Two Installation and Operation Installation Overview Mounting the PA 300 Front Panel Features Rear Panel Features Cabling
Installation and Operation Installation Overview 1 Be certain the source device, the PA 300, and the output device are turned off and disconnected from the power source. 2 If desired, mount the PA 300 in a rack or furniture. See "Mounting the PA 300", below. 3 Cable the inputs and outputs to the PA 300. See "Cabling" on page 2-8. 4 Plug the input device, the PA 300, and the output device into a grounded AC source. 5 Turn on the input and output devices.
Tabletop use Four self-adhesive rubber feet are included with the PA 300. For tabletop use, affix one foot at each corner of the bottom side of the unit and place the unit in the desired location. Rack mounting For optional rack mounting, do not install the rubber feet. Mount the PA 300 on a 6" deep, 1U high rack shelf (part #60-190-10 or 60-604-10) or a 9.5" deep 1U high rack shelf (part #60-190-01 or 60-604-01). 1. Remove the rubber feet if they were previously installed on the bottom of the unit. 2.
Installation and Operation, cont’d 1U Universal Rack Shelf 1/2 Rack Width Front False Faceplate Front false faceplate uses 2 screws. (2) 4-40 x 3/16" Screws N Use 2 mounting holes on opposite corners. Using screws longer than 3/16” will damage the unit and void the warranty. Mounting the PA 300 on a 9.5" deep rack shelf Under-desk mounting Furniture-mount (under a desk or shelf) the PA 300 using the optional mounting kit (part #70-077-01), as illustrated below.
1. Remove two screws from one side of the unit. Retain the screws for possible future use. 2. Attach one bracket to the side of the unit, using the provided machine screws. 3. Repeat steps 1 and 2 on the other side of the unit. 4. Hold the PA 300 with the attached brackets against the mounting location. On the mounting surface, mark the location of the four bracket screw holes. 5. Drill pilot holes 1/4" (6.4 mm) deep and 3/32" (2.
Installation and Operation, cont’d Through-desk mounting Mount the PA 300 through a desk or table, using the optional mounting kit (part #70-077-02), as illustrated below. Through-desk mounting the PA 300 2-6 1. Install the brackets as shown above. Tighten the screws only enough to allow sliding of the brackets. 2. Mark the opening through which the unit will be mounted — approximately 1.8" by 8.9" (4.6 cm by 22.6 cm). 3. Cut out the material from the installation area. 4.
Front Panel Features GAIN PEAKING HF LF PA 300 PEAKING AMPLIFIER 1 2 3 a b Power LED — Lights when the PA 300 is receiving power. c Peaking control potentiometers — provide optimum signal compensation. Separate high and low frequency controls. Gain control potentiometer — Adjusts the amount of compensation for amplitude losses caused by cable resistance. LF — Provides adjustment to minimize image streaking. HF — Provides adjustment for achieving the best image detail.
Installation and Operation, cont’d Cabling The PA 300 is specifically designed for long cable run applications. For best results, install the amplifier close to the signal source to drive a long cable to the display. The inputs of the PA 300 are BNC connectors. If the signal source uses a 15-pin HD connector, use an Extron SYM BNCM cable (Extron part #26-533-xx) to make the connection. See the illustration below.
PA 300 3 Chapter Three Adjusting the Display Signal Compatibility Potentiometer Adjustments
Adjusting the Display Signal Compatibility The PA 300 processes VGA-UXGA, RGBHV, RGBS, RGBsB, RsGsBs, HDTV, and component video signals. Potentiometer Adjustments The PA 300 achieves superior amplification by using two independent peaking potentiometers: LF for streaking adjustment and HF for detail adjustment. The goal in adjusting the PA 300 Gain and Peaking potentiometers is to produce a sharp image (i.e., an image free of streaking or smearing) on the attached display.
Adjusting the peaking To adjust the Peaking potentiometers, do the following: 1. Using MS Paint and a spreadsheet, create a testing image on your PC desktop that includes squares, lines, text, and gradations of color. Use the illustration below as a guide. 2. Adjust the LF (low frequency) potentiometer until the image is free of streaking. When the LF is over adjusted, the streaking is the same color as the image, as shown below.
Adjusting the Display, cont’d When the LF is under adjusted, the streaking is the inverse color of the image, as shown below. The potentiometer should be adjusted midway between these two extremes. 3. Adjust the HF potentiometer until both text and icon images appear sharp. When HF is over adjusted, ghosting may appear, as illustrated below. When the HF is under adjusted, smearing may appear, as shown below. The potentiometer should be adjusted midway between these two extremes. 4.
PA 300 A Appendix A Specifications, Part Numbers, and Accessories Specifications Parts
Specifications, Part Numbers, and Accessories Specifications Video Gain ������������������������������������������������ -2.5 to +3.5 dB (x0.75 to x1.4), adjustable; default = 0 dB Peaking/equalization Low frequency ������������������������������� 0 to 4 dB at 10 MHz, adjustable High frequency ������������������������������ 0 to 15 dB at 120 MHz, adjustable Bandwidth ������������������������������������� 350 MHz (-3 dB) Output cable driving distance ����� Up to 600' (185 m) with Extron Mini HR cable.
Minimum/maximum levels �������� Impedance �������������������������������������� Return loss ������������������������������������� DC offset ���������������������������������������� Analog: 0.4 V to 2.
Specifications, Part Numbers, Accessories, cont’d Enclosure dimensions ������������������ 1.7'' H x 8.7'' W x 6.0'' D (1U high, half rack wide) (4.3 cm H x 22.1 cm W x 15.2 cm D) (Depth excludes connectors.) Product weight ������������������������������ 1.5 lbs (0.
Parts Included parts Included parts PA300 Replacement Part number 60-755-01 IEC power cord Rubber feet (4) PA 300 Peaking Amplifier User's Manual Optional accessories Description Part Number 1U, 9.5" deep Universal Rack Shelf, RSU 129 60-190-01 1U, 9.
Specifications, Part Numbers, Accessories, cont’d A-6 PA 300 Peaking Amplifier • Specifications, Parts, Accessories
Extron’s Warranty Extron Electronics warrants this product against defects in materials and workmanship for a period of three years from the date of purchase.
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