Leitch 880 Series, Инструкция по эксплуатации

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880 Series Audio Distribution Amplifiers Instruction Manual 1
Preliminary—Contents are proprietary and confidential. Do not photocopy or distribute.
Chapter 1
880 Series Mounting Frames
Overview
The 880 series, 8-output audio distribution amplifiers meet the most demanding
requirements for AM/FM/TV broadcast and program production systems.
Heading the list of the amplifier’s exceptional performance characteristics is the
100 dB S/N ratio. Flat frequency response, carefully controlled roll-off and very
low distortion ensure a virtually transparent transmission path.
The amplifier’s input is overvoltage protected up to 120 volts AC or DC. The
transformerless, balanced input is normally bridging, but can be terminated by
installing a suitable resistor. Unbalanced input is converted to balanced output.
Isolation between modules in the mounting frame is better than 100 dB over the
entire audio frequency band.
The modular concept with two fully wired mounting frame options facilitates
system design. The options are as follows:
•
The FR-881/883 mounting frame accepts up to four 880 series audio
distribution amplifier modules. The FR-881 frame accepts one 882PS
power supply while the FR-883 frame accepts one 884PS power supply.
• The FR-882/884 mounting frame accepts up to twelve 880 series audio
distribution amplifier modules. The FR-882 frame accepts two 882PS
power supplies while the FR-883 frame accepts two 884PS power supplies.
A fully loaded frame will operate with a single power supply; however,
Leitch recommends that a second optional power supply be included for
cooler operation and power redundancy.
• The high efficiency, shielded switching power supply accepts line inputs
from 90 to 135 VAC without changing transformer taps.