Pico Macom MPCM45 Manual de usuario

MPCM45

125-Channel Range 54-806

MHz (CATV 2-125)

45 dBmV adjustable output

for optimum carrier-to-noise

performance

Compatible with most manu-

facturers mini-modulator

chassis

Digital phase-locked loop

(PLL) design guarantees

precise frequency locking for

solid drift-free operation

BTSC stereo compatible

pre-emphasis disable switch

provides pass-through for

stereo signals

SAW (surface acoustic wave)

filtered for superior adjacent

channel performance enables

drop-in channel expansion

In-band carrier-to-noise ratio

>60 dB ensures superior

picture quality

Front panel access to controls

enables easy setup

IRC and HRC offset available

for frequency settings in sys-

tems using offset channels

Optional PAL format

channels available

The Pico Macom MPCM45 is a professional grade high-performance CATV mini-modu-

lator.This modulator accepts any audio-video baseband television signal and provides a

45dBmV minimum output on CATV channels 2 to 125 (54-806 MHz) while accommodat-

ing HRC and IRC offset frequencies.The unit can be reconfigured to any output channel

within band by qualified service centers. Up to 12 or 16 units can be installed “mix-and-

match” in Pico Macom’s MPC12, MPS12, MPC12R or MPC16 chassis with MPCMA

agile mini-modulators or MPCD mini-demodulators. Its universal design enables it to be

installed in other manufacturers’ mini-mod chassis.The unit’s phase-locked loop (PLL)

circuitry and unique multi-stage output bandpass filtering ensure accurate and spurious-

free output. In addition, the MPCM45 uses SAW filtering with FCC group delay correction

circuitry to provide superior adjacent channel selectivity.The MPCM45 modulator is

shipped with all internal adjustments preset. Pico Macom backs up this product with its

industry leading 5-year limited warranty.

MPCM45

Universal-Chassis Single Channel A/V Mini-Modulator

www.picomacom.com

Headend & Electronics

355 Parkside Drive San Fernando, CA 91340

Ph: 818-493-4300 Toll Free: 800-421-6511 Fax: 818-493-4433

A-47

Rev. 12/02

MPCM45

Channels: 125 Channels

(CATV 2-125)

Frequency Range: 54-806MHz

Output Level: 35 to 45 dBmV adjustable

from front panel

Output Impedance: 75 Ohms

Audio/Video Ratio: Adjustable -10 to -25 dB

below video carrier

Frequency Stability: ±5 kHz in aeronautical band

Conforms to FCC Docket 21006

Spurious Output: -60 dB below video carrier

with A/V ratio @ -15 dB

Carrier-to-noise ratio

(in-band): >60 dB

Carrier-to-noise ratio

(out-of-band): >60 dB

Fv-1.5 MHz: >55 dBc

Fv-6.0 MHz: >60 dBc

Input Level: 1 V p-p min for 87.5% mod.

Input Impedance: 75 Ohms

Input Level Range: 0.5 V to 1.5 V p-p

Differential Gain: <5% (10 to 90% APL)

Differential Phase: <5° (10 to 90% APL)

Chrominance Luminance delay:See note

NOTE: Meets FCC group delay predistortion correction for

color transmission.

Power Input: +12 VDC, +5 VDC

Operating Temperature: -10° C to +50° C

Dimensions: 1˝(W) x 71/2˝(D) x 31/2˝(H)

Weight: 0.7 lbs.

Connectors: RF: “F” type

Power: 0.100˝ center 3-pin

Audio Input Impedance: 5k Ohms

Baseband Input Level: 0.5 V p-p for 25 kHz peak dev.

Preemphasis: 75 microseconds

Flatness: 1.5 dB max. 50 Hz to 15 kHz

RF Video

Audio

General

Product Specifications

Universal-Chassis Single Channel A/V Mini-Modulator

AUDIO

VIDEO

PWR

A/V

RATIO

CH.

Ordering Information

MPCM45 – Channel

www.picomacom.com

A-48

Rev. 12/02 355 Parkside Drive San Fernando, CA 91340

Ph: 818-493-4300 Toll Free: 800-421-6511 Fax: 818-493-4433

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