Pelco Car Amplifier EA2000 User Manual

®
EA2000  
Half-Duplex Equalizing Amplifier  
Installation/Operation Manual  
C632M (2/88)  
Pelco • 3500 Pelco Way, Clovis, CA 93612-5699 • USA • (800) 289-9100 or (1-559) 292-1981  
FAX (800) 289-9150 or (1-559) 292-3827  
International customers call (1-559) 292-1981 or FAX (1-559) 348-1120  
 
LIST OF ILLUSTRATIONS  
Figure  
Page  
1
2
3
4
5
Typical Installation Configuration ....................................................................................................3  
EA2000 Cable Connections ............................................................................................................3  
EA2000 Exploded Assembly Diagram ............................................................................................5  
EA2000 Schematic (PCB9000104).................................................................................................6  
EA2000 Dimension Drawing ...........................................................................................................7  
Pelco Manual C632M (2/88)  
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iv  
Pelco Manual C632M (2/88)  
 
INSTALLATION/OPERATION MANUAL  
MODEL EA2000  
HALF-DUPLEX EQUALIZING AMPLIFIER  
1.0 WARNINGS  
Priortoinstallationanduseofthisproduct,thefollowing  
WARNINGS should be observed.  
4. Only use replacement parts recommended by  
Pelco.  
1. Installation and servicing should only be done by  
Qualified Service Personnel and conform to all Lo-  
cal codes.  
5. After replacement/repair of this unit’s electrical  
components, conduct a resistance measurement  
between line and exposed parts to verify the ex-  
posed parts have not been connected to line cir-  
cuitry.  
2. Unless the unit is specifically marked as a NEMA  
Type 3, 3R, 35, 4, 4X, 6 or 6P enclosure, it is de-  
signed for Indoor use only and it must not be in-  
stalled where exposed to rain and moisture.  
3. The product may bear the following marks:  
This symbol indicates that dangerous voltage  
constituting a risk of electric shock is present  
within this unit.  
This symbol indicates that there are important  
operating and maintenance instructions in the  
literature accompanying this unit.  
CAUTION:  
RISK OF ELECTRIC SHOCK.  
DO NOT OPEN.  
CAUTION:  
TOREDUCETHERISKOFELECTRICAL  
SHOCK, DO NOT REMOVE COVER. NO  
USER-SERVICEABLE PARTS INSIDE.  
REFER SERVICING TO QUALIFIED  
SERVICE PERSONNEL.  
Please thoroughly familiarize yourself with the information in this manual  
prior to installation and operation.  
Pelco Manual C632M (2/88)  
1
 
2.0 SCOPE  
4.0 INSTALLATION  
The information contained within this manual covers  
the installation and operation of the EA2000 Half-duplex  
Equalizing Amplifier.  
The EA2000 is designed to be used for post equaliza-  
tion only (located near the Coaxitron transmitter); use  
as a pre-equalizer is not allowed.  
3.0 DESCRIPTION  
Figure 1 illustrates a typical system installation.  
For installation, perform the following steps:  
The EA2000 is a prioritized, half-duplex equalizing  
amplifier intended for, but not restricted to, use with  
Pelco’s Coaxitron® System 2000 control.  
1. Connect the video cable from the Coaxitron re-  
ceiver to the connector marked “INPUT” on the  
rear panel.  
In the absence of a Coaxitron control signal, the ampli-  
fier functions identically to an ordinary unidirectional  
equalizer, providing up tp 8 dB of flat gain and high  
frequency boost of up to 18 dB at 12 MHz.  
2. Connect a video cable from the connector marked  
“OUTPUT” to the Coaxitron transmitter (see Fig-  
ure 2).  
In the presence of a control signal, the “forward” equal-  
izing function is temporarily suspended while the con-  
trol signal is regenerated, pre-equalized and transmitted  
in the “reverse” direction.  
The EA2000 is supplied with a U.L. listed wall trans-  
former which plugs into a 120 VAC outlet and supplies  
the 12 VAC to operate the unit.  
Note that the control direction has priority over the video  
direction, but that this “interruption” occupies less than  
one TV line period (excluding sync pulses) and that  
precautions are taken to insure that the synthetically  
generated video signal during this interruption does not  
contain deleterious anomolies.  
5.0 OPERATION  
Optimum performance is achieved if an oscilloscope  
and a standard EIA resolution chart are used in making  
gain and boost adjustments. The GAIN control should  
be adjusted for an output level to 1 volt p-p and the L.F.  
BOOST control should be adjusted for minimum tilt  
during sync pulses. The H.F. BOOST control is then  
adjusted for optimum resolution wedge reproduction.  
The EA2000 provides a low cost, highly effective means  
of maintaining CCTV picture quality in runs of up to  
3,000 feet (914 m) of RG59 cable.  
If the use of a resolution chart is precluded, the H.F.  
BOOST control should be adjusted for maximum sharp-  
ness of sync pulse edges — without overshoot.  
Through panel controls provide for adjustable ampli-  
fier flat gain of 1-8 dB plus adjustable high frequency  
boost of from 0 to greater than 18 dB at 12 MHz.  
In the absence of an oscilloscope, a less precise (but often  
equally satisfactory) adjustment can be made as follows:  
Applications of the EA2000 should be for post-  
equalization only (located near the Coaxitron trans-  
mitter); use as a pre-equalizer is not allowed.  
1. Set the GAIN and BOOST controls approximately  
1/3 turn from fully counterclockwise.  
This desk top unit can be rack mounted using the R300  
Rack Mount Kit.  
2. Adjust GAIN control for satisfactory overall pic-  
ture contrast.  
3.1 OPTIONS  
3. Adjust L.F. BOOST control for optimum detail.  
Too much boost (clockwise) can cause picture in-  
stability and/or smearing (trail).  
R300  
Rack mount kit (up to 3 units can be  
racked horizontally)  
4. Adjust the H.F. BOOST control to further optimize  
picture detail. Note that the effectiveness of this  
control is hardly perceptible unless very fine pic-  
ture detail is present in the camera signal output.  
An excessive setting of this control (clockwise) can,  
however, increase picture noise.  
2
Pelco Manual C632M (2/88)  
 
6.0 MAINTENANCE  
Under normal operating conditions and usage, mainte-  
nance of this equipment is not necessary. The EA2000  
has no operator serviceable components and should be  
serviced by a trained technician or returned to the fac-  
tory for repair.  
TERMINATE  
MONITOR  
COAXIAL CABLE  
COAXIAL CABLE  
AC INPUT  
MULTI-  
CONDUCTOR  
CABLE  
VIDEO  
F1 .2 ASB  
J8  
J7  
J6  
MPT9000CZ TRANSMITTER  
COAXIAL  
CABLE  
COAXIAL CABLE  
IN  
OUT  
AC INPUT  
OUTPUT  
INPUT  
12 VAC  
EA2000  
COAXITRON® RECEIVER  
Figure 1. Typical Installation Configuration  
TO TRANSMITTER  
FROM RECEIVER  
OUTPUT  
INPUT  
12VAC  
Figure 2. EA2000 Cable Connections  
Pelco Manual C632M (2/88)  
3
 
7.0 PARTS LIST  
The following list corresponds to the exploded assembly diagram in Figure 3.  
Item  
Qty  
Description  
Part Number  
1
2
3
4
5
6
7
8
9
10  
11  
12  
13  
14  
15  
16  
17  
1
2
1
2
1
1
1
1
1
4
Connector, DC power jack #16 PJ221  
Connector MTA 2-position cable w/socket  
Connector MTA 3-position cable w/socket  
Connector, BNC CP1094ULNSD CAM00  
Chassis, univ M1CA  
Chassis cover, univ M1CA  
Panel front, EA2000  
PCB assembly, half-duplex equalizer  
Panel, rear EA2000  
Spacer, 1/4" hex x .375 4-40 tap  
Not used  
CON16PJ421  
CON640428-2  
CON640428-3  
CONUG1094/U  
M1CA4001COMP  
M1CA4001COMP  
PANEA4004COMP  
PCB9000104ASSY  
RPEA4000COMP  
SPA8402  
1
2
8
8
4
Lug, BNC ground  
ZH1497  
Screw, 2-56 x 3/16" pan slot SS  
Screw, 4-40 x 1/4" pan Philips SS  
Screw, 4-40 x 3/8" pan Philips Blk  
Screw, 4-40 x 3/8" pan Philips SS  
Washer, internal star #4 SS  
ZH2-56X.187SPS  
ZH4-40X.250SPP15  
ZH4-40X.375BPP  
ZH4-40X.375SPP  
ZH4LWSIS  
12  
4
Pelco Manual C632M (2/88)  
 
8.0 EXPLODED ASSEMBLY DIAGRAM  
Figure 3. EA2000 Exploded Assembly Diagram  
Pelco Manual C632M (2/88)  
5
 
9.0 SCHEMATIC  
Figure 4. EA2000 Schematic (PCB9000104)  
6
Pelco Manual C632M (2/88)  
 
10.0 SPECIFICATIONS  
MODEL  
Cable Lengths:  
Cable Type  
RG59  
Maximum Effective Distance  
3,000 feet (914.4 m)  
4,500 feet (1371.6 m)  
6,000 feet (1828.8 m)  
8,000 feet (2438.4 m)  
EA2000  
Half-duplexEqualizingVideo/Control  
RG6  
RG11  
RG15  
Amplifier. (UL)  
EA2000/220  
Same as EA2000 except 230 VAC  
operation. (CE)  
GENERAL  
Environment:  
32° to 122°F (0 to 48.89°C)  
0-90% relative humidity  
ELECTRICAL  
Input:  
Single (BNC) internally terminated  
in 75 ohms  
Dimensions:  
Weight:  
see Figure 5  
Output:  
Single (BNC) source terminated  
3 lbs (1.35 kg)  
Frequency  
Response:  
Shipping  
Weight:  
Adjustable from flat (±1 dB) at 12  
MHz to greater than 18 dB of boost at  
12 MHz  
4 lbs (1.81 kg)  
Construction:  
Chassis  
Steel, zinc plated  
Gain:  
Adjustable from 1–8 dB  
Cover  
Panel  
Aluminum, black polyester powder  
coat  
Output  
Dynamic Range: Up to 2 volts p-p at 50% APL  
Up to 1.5 volts p-p at 90% APL  
Aluminum, black polyester powder  
coat with white silk screening  
Tilt:  
Less than 2%  
Rating:  
NEMA 1  
Power Requirements  
for Transformer: 1.5 vA (.125 amp) at 12 ±15% volts  
RMS 50-60 Hz from a dedicated, iso-  
lated source  
Figure 5. EA2000 Dimension Drawing  
Pelco Manual C632M (2/88)  
7
 
11.0 WARRANTY AND RETURN  
INFORMATION  
RETURNS  
WARRANTY  
In order to expedite parts returned to the factory for repair or credit, please  
call the factory at (800) 289-9100 or (559) 292-1981 to obtain an  
authorization number (CA number if returned for credit, and RA number  
if returned for repair).  
Pelco will repair or replace, without charge, any merchandise proved  
defectiveinmaterialorworkmanshipforaperiodofoneyearafterthedate  
of shipment.  
Exceptions to this warranty are as noted below:  
All merchandise returned for credit may be subject to a 20% restocking  
and refurbishing charge.  
Five years on FT/FR8000 Series fiber optic products.  
Three years on Genex® Series products (multiplexers, server, and  
keyboard).  
Three years on Camclosure® and fixed camera models, except the  
CC3701H-2, CC3701H-2X, CC3751H-2, CC3651H-2X, MC3651H-2,  
and MC3651H-2X camera models, which have a five-year warranty.  
Goods returned for repair or credit should be clearly identified with the  
assigned CA or RA number and freight should be prepaid. Ship to the  
appropriate address below.  
If you are located within the continental U.S., Alaska, Hawaii or Puerto  
Rico, send goods to:  
Service Department  
Pelco  
Two years on standard motorized or fixed focal length lenses.  
Two years on Legacy®, CM6700/CM6800/CM9700 Series matrix, and  
DF5/DF8 Series fixed dome products.  
Two years on Spectra®, Esprit®, ExSite, and PS20 scanners, includ-  
ing when used in continuous motion applications.  
Two years on Esprit® and WW5700 Series window wiper (excluding  
wiper blades).  
3500 Pelco Way  
Clovis, CA 93612-5699  
If you are located outside the continental U.S., Alaska, Hawaii or Puerto  
Rico and are instructed to return goods to the USA, you may do one of the  
following:  
If the goods are to be sent by a COURIER SERVICE, send the goods to:  
Eighteen months on DX Series digital video recorders, NVR300  
Series network video recorders, and EnduraSeries distributed  
network-based video products.  
Pelco  
3500 Pelco Way  
Clovis, CA 93612-5699 USA  
One year (except video heads) on video cassette recorders (VCRs).  
Video heads will be covered for a period of six months.  
If the goods are to be sent by a FREIGHT FORWARDER, send the goods  
to:  
Six months on all pan and tilts, scanners or preset lenses used in  
continuousmotionapplications(thatis,presetscan,tourandautoscan  
modes).  
Pelco c/o Expeditors  
473 Eccles Avenue  
South San Francisco, CA 94080 USA  
Phone: 650-737-1700  
Fax: 650-737-0933  
Pelco will warrant all replacement parts and repairs for 90 days from the  
date of Pelco shipment. All goods requiring warranty repair shall be sent  
freight prepaid to Pelco, Clovis, California. Repairs made necessary by  
reason of misuse, alteration, normal wear, or accident are not covered  
under this warranty.  
Pelco assumes no risk and shall be subject to no liability for damages or  
loss resulting from the specific use or application made of the Products.  
Pelco’s liability for any claim, whether based on breach of contract,  
negligence, infringement of any rights of any party or product liability,  
relating to the Products shall not exceed the price paid by the Dealer to  
Pelco for such Products. In no event will Pelco be liable for any special,  
incidental or consequential damages (including loss of use, loss of profit  
and claims of third parties) however caused, whether by the negligence  
of Pelco or otherwise.  
The above warranty provides the Dealer with specific legal rights. The  
Dealer may also have additional rights, which are subject to variation from  
state to state.  
Ifawarrantyrepairisrequired,theDealermustcontactPelcoat(800) 289-  
9100 or (559) 292-1981 to obtain a Repair Authorization number (RA),  
and provide the following information:  
1. Model and serial number  
2. Date of shipment, P.O. number, Sales Order number, or Pelco invoice  
number  
3. Details of the defect or problem  
If there is a dispute regarding the warranty of a product which does not fall  
under the warranty conditions stated above, please include a written  
explanation with the product when returned.  
Method of return shipment shall be the same or equal to the method by  
which the item was received by Pelco.  
8
Pelco Manual C632M (2/88)  
 

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