Pelco ea2010 User Manual

®

EA2010 Post Equalizing

Video Amplifier

Installation/Operation

Manual C630M Rev A (8/90)

1.0 WARNINGS

Prior to installation and use of this product, the follow­ing WARNINGS should be observed.

1. Installation and servicing should only be done by
Qualified Service Personnel and conform to all
Local codes.

2. Unless the unit is specifically marked as a NEMA
T ype 3, 3R, 3S, 4, 4X, 6, or 6P enclosure, it is de­signed for indoor use only and it must not be in­stalled where exposed to rain and moisture.

4. Only use replacement parts recommended by
Pelco.

5. After replacement/repair of this unit’s electrical
components, conduct a resistance measurement
between line and exposed parts to verify the ex­posed parts have not been connected to line cir­cuitry.

2.0 SCOPE

The information contained within this manual covers
the EA2010 Post Equalizing Video Amplifier .

3.0 DESCRIPTION

The Pelco EA2010 provides a low cost, highly effec­tive means of maintaining CCTV picture quality in runs
of up to 3000 feet (914.4 m) of RG59 cable.

Through panel controls provided for adjustable overall
amplifier flat gain of 1 to +8 dB plus adjustable high
frequency boost of 0 dB to greater than 18 dB at 12
MHz, mainlining full video amplitude, contrast and
detail.

The EA2010 features all solid-state circuitry and is sup­plied with a U.L. Listed wall transformer. Applications
should be for POST-EQUALIZATION only (located
near the monitoring equipment); use as a pre-equalizer
is discouraged.

Pelco • 300 W. Pontiac Way, Clovis, CA 93612-5699 • USA • [phone] or (1-559) 292-1981

FAX [phone] or (1-559) 292-3827 • DataFAX [phone] or (1-559) 292-0435

International customers call (1-559) 292-1981 or FAX [phone]

3.1 OPTIONS

DT200 Dual desktop mount kit; two units

can be mounted side-by-side in one
desktop chassis.

R300 Rack mounting kit. Up to three (3)

units may be racked horizontally In a
single rack kit. Blank filler panels
provided for use when less than three
units are racked.

4.0 OPERATION

In the absence of an oscilloscope, a less precise (but
often equally satisfactory) adjustment can be made as
follows:

1. Set the GAIN and BOOST controls approximately
1/3 turn from fully counterclockwise.

2. Adjust GAIN control for satisfactory overall pic­ture contrast.

3. Adjust L.F. BOOST control for optimum detail.
T oo much boost (clockwise) can cause picture in­stability and/or smearing (trail).

Optimum performance Is achieved if an oscilloscope a
standard EIA resolution chart are used in making gain
and boost adjustments. The (GAIN control should be
adjusted for an output level of 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.

If the use of a resolution chart is precluded, the H.F.
BOOST control should be adjusted for maximum sharp­ness of sync pulse edges—without overshoot.

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 pic­ture detail is present in the camera signal output.
An excessive setting of this control (clockwise) can,
however, increase picture noise.

Refer to Figure 1 for a typical system configuration.

OUTPUT INPUT

12 VA C

Figure 1. Typical System Configuration

2 Pelco Manual C630M Rev A (8/90)