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
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Table of Contents
Features ........................................................................................ 1-2
Cabling.......................................................................................... 2-8
Accessories ........................................................................................A-1
Parts ...............................................................................................A-5
PA 300 Peaking Amplifier • Table of Contents
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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Specifications, Part Numbers, Accessories, cont’d
PA 300 Peaking Amplifier • Specifications, Parts, Accessories
A-6
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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.
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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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