DRAKE DAR8633 Manuale rapido

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Rack Mount Distribution Amplifiers, with Power Doubled Hybrid Output

MIN.

INPUT

MONITOR

-20 dB

DESCRIPTION

The R.L. DRAKE models DAR8642, DAR8633, DAR8618,

DAR7542, and DAR7533, are broadband distribution

amplifiers designed for indoor headend use in both

residential and commercial buildings where RF signal

distribution in the frequency range of 47 to 860 MHz is

required. Each model, except the DAR8618, incorporates a

push-pull hybrid input preamp and a power doubled hybrid

output amplifier to provide a very low distortion signal for

launch amp applications in the output of an SMATV or CATV

headend. The Gain and Slope controls operate between the

preamp hybrid and the output hybrid to maintain a low noise

figure over a wide range of gain and slope settings.

Only the DAR8618 has a power doubled output hybrid with

no input preamp.

Input and output test connectors are provided for convenient

monitoring of the signal path. The amplifier circuitry is

designed for maximum stability, low distortion, low noise

figure, and is protected in a rugged aluminum housing. The

unit operates from a nominal 100-240 VAC, 50/60 Hz input.

N I

MAX.

MIN.

FLAT

POWER

OUTPUT

MONITOR

-20 dB

F1 - POWER LED

This indicator illuminates when power is supplied to the unit.

F2 - INPUT MONITOR

This connector may be used to monitor input to the DAR.

The levels will be 20 dB below the input levels at R3.

F3 - GAIN

Adjusts the amplifier interstage attenuator.

F4 - SLOPE

Adjusts the slope of the output signal.

F5 - OUTPUT MONITOR

This connector may be used to monitor the output of the

DAR. Levels will be 20 dB below those present at R2.

R2 must be terminated in 75 Ohms for an accurate reading.

DAR DISTRIBUTION AMPLIFIER