Extron electronic Stereo Amplifier PA 300 User Manual

User’s Manual  
PA 300  
Peaking Amplifier  
68-1108-01 B  
12 08  
 
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FCC Class A Notice  
This equipment has been tested and found to comply with the limits for a Class A digital device,  
pursuant to part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this  
device may not cause harmful interference, and (2) this device must accept any interference received,  
including interference that may cause undesired operation. The Class A limits are designed to  
provide reasonable protection against harmful interference when the equipment is operated in  
a commercial environment. This equipment generates, uses, and can radiate radio frequency  
energy and, if not installed and used in accordance with the instruction manual, may cause harmful  
interference to radio communications. Operation of this equipment in a residential area is likely to  
cause harmful interference, in which case the user will be required to correct the interference at his  
own expense.  
This unit was tested with shielded cables on the peripheral devices. Shielded cables must be used  
with the unit to ensure compliance with FCC emissions limits.  
N
 
 
Table of Contents  
PA 300 Peaking Amplifier • Table of Contents  
i
 
Table of Contents, cont’d  
All trademarks mentioned in this manual are the properties of their respective owners.  
68-1108-01 B  
12 08  
PA 300 Peaking Amplifier • Table of Contents  
ii  
 
PA 300  
Chapter One  
1
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.  
The PA 300 has one gain potentiometer and two peaking  
potentiometers on the front panel. On the rear panel, the  
PA 300 provides five BNCs for RGBHV input and five BNCs for  
RGBHV output. The unit restores the sync signals, but does not  
process them for format, polarity, or delay.  
The PA 300 is housed in a 1U, half rack, 6" (15.2 cm) deep,  
2-piece enclosure, and uses an internal power supply.  
Features  
Bandwidth — 350 MHz (-3 dB) RGB video bandwidth, fully  
loaded.  
Gain and peaking control — allows optimized output  
compensation for various cable lengths and applications.  
Light and compact metal enclosure — 1U, half rack, 6" (15.2 cm)  
deep, 2-piece enclosure.  
Versatile mounting options — can be set on a table; mounted  
on a rack shelf; or mounted through or under a desk,  
podium, or tabletop.  
Global accessibility — has a universal internal power supply  
that allows for worldwide usability.  
PA 300 Peaking Amplifier • Introduction  
1-2  
 
 
PA 300  
Chapter Two  
2
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
3
4
5
If desired, mount the PA 300 in a rack or furniture. See  
"Mounting the PA 300", below.  
Cable the inputs and outputs to the PA 300. See "Cabling"  
on page 2-8.  
Plug the input device, the PA 300, and the output device  
into a grounded AC source.  
Turn on the input and output devices.  
Mounting the PA 300  
The PA 300 peaking amplifier can be set on a table; mounted on  
a rack shelf; or mounted through or under a desk, podium, or  
tabletop.  
The following kits are available for mounting the PA 300:  
RSB 129 1U, 9.5" deep basic rack shelf  
(part #60-604-01)  
RSU 129 1U, 9.5" deep universal rack shelf kit  
(part #60-190-01)  
RSB 126 1U, 6" deep basic rack shelf  
(part #60-604-10)  
RSU 126 1U, 6" deep universal rack shelf kit  
(part #60-190-10)  
MBU 125 Under-desk mounting kit (part #70-077-01)  
MBD 129 Through-desk mounting kit (part #70-077-02)  
The following sections provide instructions for these options.  
PA 300 Peaking Amplifier • Installation and Operation  
2-2  
 
 
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.  
Mount the unit on the rack shelf, using two 4-40 x 3/16"  
screws in opposite (diagonal) corners to secure it.  
3.  
4.  
Install blank panel(s) or other unit(s) on the rack shelf.  
Attach the rack shelf to the rack using the supplied bolts.  
6" Deep Rack Shelf  
1/2 Rack Width Front False  
Faceplate  
Front false  
faceplate  
uses 2  
screws.  
(2) 4-40 x 3/16"  
Screws  
Use 2 mounting holes on  
opposite corners.  
Mounting the PA 300 on a 6-inch deep rack shelf  
PA 300 Peaking Amplifier • Installation and Operation  
2-3  
 
 
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
Using screws longer  
than 3/16” will damage  
the unit and void the  
warranty.  
Use 2 mounting holes on  
opposite corners.  
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.  
Under-desk mounting the PA 300  
PA 300 Peaking Amplifier • Installation and Operation  
2-4  
 
 
1.  
2.  
Remove two screws from one side of the unit. Retain the  
screws for possible future use.  
Attach one bracket to the side of the unit, using the  
provided machine screws.  
3.  
4.  
Repeat steps 1 and 2 on the other side of the unit.  
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" (2.4 mm)  
in diameter in the desk or table at the locations of the  
mounting bracket screws. The holes should be drilled  
from the underside or inside (concealed side) of the  
furniture, where the amplifier will be located.  
6.  
7.  
8.  
Insert #8 wood screws into the four pilot holes. Tighten  
each screw into the mounting surface until slightly less  
than 1/4" of the screw head protrudes.  
Align the mounting screws with the slots in the brackets  
and place the unit against the surface, with the screws  
through the bracket slots.  
Slide the unit slightly forward or back, then tighten all four  
screws to secure it in place.  
PA 300 Peaking Amplifier • Installation and Operation  
2-5  
 
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  
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.  
4.  
Cut out the material from the installation area.  
Hold the unit, with the mounting brackets attached, under  
the furniture where it will be secured. Mark where the  
screws will attach the mounting bracket to the underside  
of the furniture.  
5.  
Drill pilot holes 1/4" (6.4 mm) deep and 3/32" (2.4 mm)  
in diameter in the desk or table at the locations marked in  
step 4.  
6.  
7.  
Using the four provided wood screws, attach the brackets  
to the mounting surface.  
Slide the unit up and down or back and forth in the  
mounting brackets until the face of the PA 300 is at the  
desired height. Tighten the screws that secure the brackets  
to the unit.  
PA 300 Peaking Amplifier • Installation and Operation  
2-6  
 
 
Front Panel Features  
GAIN  
PEAKING  
LF HF  
PA 300  
PEAKING AMPLIFIER  
1
2
3
Power LED — Lights when the PA 300 is receiving power.  
a
b
Gain control potentiometer — Adjusts the amount of  
compensation for amplitude losses caused by cable resistance.  
Peaking control potentiometers — provide optimum signal  
compensation. Separate high and low frequency controls.  
c
LF — Provides adjustment to minimize image streaking.  
HF — Provides adjustment for achieving the best image detail.  
Rear Panel Features  
100-240V .3A  
PA 300  
INPUT  
OUTPUT  
B
50/60 Hz  
R
G
B
H/HV  
V
R
G
H/HV  
V
1
3
2
AC power input connector — Attach a standard IEC power  
cord (100 VAC to 240 VAC, 50 or 60 Hz).  
a
Input BNC connectors — Connect to the input device.  
Output BNC connectors — Connect to the output device.  
b
c
PA 300 Peaking Amplifier • Installation and Operation  
2-7  
 
 
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.  
RGBHV  
RGBHV  
R
R
B
B
H/V  
H/V  
V
V
G
G
RGBS  
RGsB,  
RsGsBs,  
Component  
G
B
H/V  
V
R
S-Video  
R
R
G
G
B
B
H/V  
H/V  
V
V
Composite  
VGA  
For component and S-video connections G is luma (Y)  
N
To make input and output connections to other devices, do the  
following:  
1.  
2.  
3.  
4.  
5.  
Turn off the PC and the local monitor.  
Connect the output of the RGB source to the PA 300 input.  
Connect the PA 300 output to the RGB display device.  
Turn on the source and display devices, then the PA 300.  
Adjust the front panel potentiometers to achieve the  
optimal image quality for your display. See chapter 3,  
"Adjusting the Display", for detailed instructions.  
PA 300 Peaking Amplifier • Installation and Operation  
2-8  
 
 
PA 300  
Chapter Three  
3
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.  
An oscilloscope is required for the most accurate gain  
adjustment, but gain can also be adjusted by observation. The  
following instructions explain how to adjust the gain with  
and without the use of an oscilloscope. An oscilloscope is not  
necessary for the peaking adjustment.  
Adjusting gain with an oscilloscope  
To adjust the Gain potentiometer using an oscilloscope:  
1.  
Remove the cable from the source and attach a VTG 300  
test generator to this cable.  
2.  
3.  
Use the White Field test pattern for the VTG 300 setting.  
Remove the far end of the cable from the projector and  
attach the oscilloscope using 75 ohm termination.  
4.  
Use an Extron Tweeker to adjust the Gain potentiometer  
for a 0.7 Vp-p reading from white (top) to black (bottom) of  
the waveform.  
5.  
6.  
Once gain is successfully adjusted, replace the source and  
display cables.  
See "Adjusting the peaking" on the following page.  
Adjusting gain without an oscilloscope  
Use an Extron Tweeker to turn the Gain potentiometer until the  
image reaches the desired level of brightness.  
PA 300 Peaking Amplifier • Adjusting the Displaꢁ  
3-2  
 
 
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.  
PA 300 Peaking Amplifier • Adjusting the Displaꢁ  
3-3  
 
 
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.  
Alternate between adjusting the HF and LF potentiometers  
until the display shows a clear and sharp image.  
PA 300 Peaking Amplifier • Adjusting the Displaꢁ  
3-4  
 
PA 300  
Appendix A  
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. Up to 1000' (300 m) with Extron  
RG6 or RG 59 cable (tested with a  
1600x1200, 60 Hz computer video signal)  
Video input  
Number/signal type .................... 1 analog RGBHV, RGBS, RGsB, RsGsBs,  
component video (interlaced, progressive,  
HDTV), S-video, composite video  
Connectors ..................................... 5 BNC female  
Nominal level ................................ 1.0 Vp-p for Y of component video and  
S-video and for composite video  
0.7 Vp-p for RGB (excluding sync) and for  
R-Y and B-Y of component video  
0.3 Vp-p for C of S-video  
Minimum/maximum levels........ Analog: 0.4 V to 2.0 Vp-p with no offset at  
unity gain  
Impedance...................................... 75 ohms  
Horizontal frequency.................... 15 kHz to 150 kHz  
Vertical frequency.......................... 40 Hz to 140 Hz  
Return loss ..................................... -30 dB @ 0 to 5 MHz  
DC offset (max. allowable)........... 1 V  
Video output  
Number/signal type..................... 1 analog RGBHV, RGBS, RGsB, RsGsBs,  
component video (interlaced, progressive,  
HDTV), S-video, composite video  
Connectors ..................................... 5 BNC female  
Nominal level ................................ 1.0 Vp-p for Y of component video and  
S-video, and for composite video  
0.7 Vp-p for RGB (excluding sync) and for  
R-Y and B-Y of component video  
0.3 Vp-p for C of S-video  
[excluding sync when gain and peaking  
potentiometers are set to unity gain  
(follows input)]  
PA 300 Peaking Amplifier • Specifications, Parts, Accessories  
A-2  
 
 
Minimum/maximum levels........ Analog: 0.4 V to 2.0 Vp-p  
Impedance...................................... 75 ohms  
Return loss ..................................... -32 dB @ 5 MHz  
DC offset ........................................ 6 mV with input at 0 offset  
Sync  
Input type ...................................... RGBHV, RGBS, RGsB, RsGsBs, YUV  
(bi-level and tri-level)  
Output type.................................... RGBHV, RGBS, RGsB, YUV (bi-level and  
tri-level)  
Input standards ............................. NTSC 3.58, NTSC 4.43, PAL, SECAM  
Input level  
RGBHV, RGBS ................... TTL: 1.8 V to 5.0 Vp-p  
RGsB, RsGsBs .................... Analog: 0.3 Vp-p  
Output level  
RGBHV, RGBS ................... TTL: 5.0 Vp-p, unterminated  
RGsB, RsGsBs .................... Analog: 0.3 Vp-p, follows input  
Input impedance .......................... 510 ohms  
Output impedance ....................... 50 ohms  
Max. propagation delay ............... H: 50 ns, V: 110 ns  
Max. rise/fall time ........................ H: <3 ns, V: <3 ns  
Polarity............................................ RGBHV, RGBS: positive or negative  
(follows input)  
RGsB, RsGsBs: negative  
General  
Power ............................................. 100 VAC to 240 VAC, 50/60 Hz, 3.6 watts,  
internal  
Temperature/humidity................ Storage: -40 to +158 °F (-40 to +70 °C) /  
10% to 90%, noncondensing  
Operating: +32 to +122 °F (0 to +50 °C) /  
10% to 90%, noncondensing  
Mounting  
Rack mount........................ Yes, with optional 1U, 9.5" deep rack shelf  
(RSU 129, #60-190-01; RSB 129, 60-604-01);  
or 1U, 6" deep rack shelf (RSU 126,  
#60-190-10; RSB 126, 60-604-10).  
Furniture mount................ Yes, with optional under-desk mounting  
kit, part #70-077-01 (MBU 125) or through-  
desk mounting kit, part #70-077-02  
(MBD 129).  
Enclosure type ............................... Metal  
PA 300 Peaking Amplifier • Specifications, Parts, Accessories  
A-3  
 
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 (0.7 kg)  
Shipping weight ........................... 3 lbs (2 kg)  
Vibration......................................... ISTA 1A in carton (International Safe  
Transit Association)  
Regulatory compliance  
Safety................................... CE, CUL, UL  
EMI/EMC .......................... CE, C-tick, FCC Class A, ICES, VCCI  
Warranty......................................... 3 years parts and labor  
All nominal levels are at 10%.  
N
N
Specifications are subject to change without notice.  
PA 300 Peaking Amplifier • Specifications, Parts, Accessories  
A-4  
 
Parts  
Included parts  
Included parts  
Replacement  
Part number  
PA300  
60-755-01  
IEC power cord  
Rubber feet (4)  
PA 300 Peaking Amplifier User's Manual  
Optional accessories  
Description  
Part Number  
60-190-01  
60-604-01  
60-190-10  
60-604-10  
70-077-01  
1U, 9.5" deep Universal Rack Shelf, RSU 129  
1U, 9.5" deep Basic Rack Shelf, RSB 129  
1U, 6" deep Universal Rack Shelf, RSU 126  
1U, 6" deep Basic Rack Shelf, RSB 126  
1U, 1/2 Rack Width, Under-Desk Mount Kit,  
MBU 125  
1U, 1/2 Rack Width, Through-Desk Mount  
Kit, MBD 129  
70-077-02  
Cables  
BNC cables  
Part number  
26-260-xx  
26-378-xx  
26-499-xx  
26-369-xx  
26-533-xx  
MHR-5 BNC 3', 6', 12', 25', 35', 50', 75', 100'  
MHR-5P BNC 3', 6', 12', 25', 35', 50', 75', 100'  
M59-5 BNC 3', 6', 12', 25', 35', 50', 75', 100'  
RG6-5 BNC 3', 6', 12', 25', 35', 50', 75', 100'  
SYM BNCM 6'', 1', 3', 6', 12', 25', 50', 75', 100'  
A-5  
 
 
Specifications, Part Numbers, Accessories, cont’d  
PA 300 Peaking Amplifier • Specifications, Parts, Accessories  
A-6  
 
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. In the event of malfunction during  
the warranty period attributable directly to faulty workmanship and/or materials,  
Extron Electronics will, at its option, repair or replace said products or components,  
to whatever extent it shall deem necessary to restore said product to proper operating  
condition, provided that it is returned within the warranty period, with proof of  
purchase and description of malfunction to:  
USA, Canada, South America,  
and Central America:  
Extron Electronics  
1001 East Ball Road  
Anaheim, CA 92805  
Japan: Extron Electronics, Japan  
Kyodo Building, 16 Ichibancho  
Chiyoda-ku, Tokyo 102-0082  
Japan  
U.S.A.  
Europe, Africa, and the Middle East:  
Extron Europe  
Hanzeboulevard 10  
3825 PH Amersfoort  
The Netherlands  
China:  
Extron China  
686 Ronghua Road, Songjiang  
District  
Shanghai 201611  
China  
Asia:  
Middle East:  
Extron Asia  
Extron Middle East  
Dubai Airport Free Zone  
F12, PO Box 293666  
United Arab Emirates, Dubai  
135 Joo Seng Road, #04-01  
PM Industrial Bldg.  
Singapore 368363  
Singapore  
This Limited Warranty does not apply if the fault has been caused by misuse, improper  
handling care, electrical or mechanical abuse, abnormal operating conditions or non-  
Extron authorized modification to the product.  
If it has been determined that the product is defective, please call Extron and ask for  
an Applications Engineer at (714) 491-1500 (USA), 31.33.453.4040 (Europe), 65.383.4400  
(Asia), or 81.3.3511.7655 (Japan) to receive an RA# (Return Authorization number). This  
will begin the repair process as quickly as possible.  
Units must be returned insured, with shipping charges prepaid. If not insured, you  
assume the risk of loss or damage during shipment. Returned units must include the  
serial number and a description of the problem, as well as the name of the person to  
contact in case there are any questions.  
Extron Electronics makes no further warranties either expressed or implied with respect  
to the product and its quality, performance, merchantability, or fitness for any particular  
use. In no event will Extron Electronics be liable for direct, indirect, or consequential  
damages resulting from any defect in this product even if Extron Electronics has been  
advised of such damage.  
Please note that laws vary from state to state and country to country, and that some  
provisions of this warranty may not apply to you.  
 
Extron USA - West Extron USA - East Extron Europe  
Extron Asia  
Extron Japan  
Extron China  
Extron Middle East  
Headquarters  
+800.633.9876  
+800.3987.6673  
+800.7339.8766  
+81.3.3511.7655  
+81.3.3511.7656 FAX  
+400.883.1568  
+971.4.2991800  
+971.4.2991880 FAX  
Inside USA / Canada Only  
Inside Europe Only  
Inside Asia Only  
Inside China Only  
+800.633.9876  
Inside USA / Canada Only  
+1.919.863.1794  
+1.919.863.1797 FAX  
+31.33.453.4040  
+31.33.453.4050 FAX  
+65.6383.4400  
+65.6383.4664 FAX  
+86.21.3760.1568  
+86.21.3760.1566 FAX  
+1.714.491.1500  
+1.714.491.1517 FAX  
© 2008 Extron Electronics. All rights reserved.  
 

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