PDI Communications, Inc.: Headend Equipment: PDI-55-SF & PDI-55-SFS Modulator

Description

Features

Specifications

DESCRIPTION

The PDI-55-SF & PDI-55-SFS are fixed channel, PLL controlled, video and audio modulators with SAW filtering. They are available for any cable channel between 2 through 134. Their video dynamic range insures 87.5% modulation depth over a wide video input range. The vestigial sideband selectivity allows maintenance free adjacent channel configuration. An efficient power supply enables cool and stable operation. The PDI-55-SF and PDI-55-SFS offer high performance, low cost and compact design with a 2 year warranty.

FEATURES

+55dBmV RF output level

Phase lock loop frequency control

SAW filtering for maintenance free adjacent channel configuration

BTSC composite baseband stereo compatible

Spurious output -60dBc

Auxiliary AC outlet

Cool operation

Excellent value for your investment dollar

2 year warranty

UL Listed Canada/U.S (PDI-55-SF only)

Also Available In All PAL Configurations

SPECIFICATIONS

Frequency Range	Channels 2-134 (54-860MHz)
Video Input Level	0.7 to 1.5 Vp-p for 87.5% modulation
Video C/N	60dB (4MHz BW)
Output Level	+55dBmV (±2dBmV audio RF level is adjustable from 13-20dB below video carrier)
Frequency Stability	±5kHz Maximum
Hum and Noise	-60dB min. @ 87.5% modulation
Audio Input Level	250mV min. for ±25kHz deviation
Audio Input Impedance	600 ohms or High Z, unbalanced (Optional 600 ohms balanced input)
Spurious Output	-60dBc typical (@ A/V ratio-15dB)
Power Requirement	117 V AC, 60Hz 15 Watts
Dimensions	19" W x 1¾" H x 6½" D

STEREO SPECIFICATIONS ( PDI-55-SFS ONLY! )

Frequency Response	20Hz to 14kHz + 1dB
Separation	27dB 20Hz to 14kHz Typical
Pilot Rejection	50dB
Signal to Noise Ratio	60dB
Audio Input Impedance	10K ohms unbalanced
Nominal Input Level (APL)	0dBm, Adjustable + 10dB
Distortion	0.5% Maximum THD