TELETRONIX LA-2A - OPERATING INSTRUCTIONS; INTRODUCTION; SPECIFICATIONS

LA-2A (3-66)
0.5 to 5 seconds for complete release depending
upon amount of previous reduction
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OPERATING INSTRUCTIONS
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TELETRONIX MODEL LA-2A LEVELING AMPLIFIER
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INTRODUCTION
The Teletronix Leveling Amplifier will automatically reduce audio peaks which might
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otherwise over drive broadcast or recording equipment.
Automatic gain reduction is accomplished by the use of an electro-optical variable
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attenuator, which is placed ahead of the first amplifier stage. The attenuation is controlled by
the amplitude of the LA-2A input signal.
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This system permits up to 40 DB of instantaneous gain reduction, yet causes no wave
form or harmonic distortion. The amplifier provides sufficient gain and output level (10 DBM
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nominal) to be used as a line or program amplifier, or for direct connection to the transmitter
in the case of radio or TV operation.
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Provisions are made for interconnection of the optical attenuators to provide eq ual gain
reduction in both channels when two of the LA-2A Leveling Amplifiers are used for FM stereo
broadcasting .
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SPE CIFICATIONS
1.
Gain Reduction:
up to 40 DB
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2.
Distortion:
less than 0.35 % total harmonics at +10 DBM,
and less than 0.75 % total harmonics at
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+16 DBM output
3.
Response:
±0.1 DB, 30 cycles to 15 KC
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4.
Noise:
75 DB below +10 DBM output level
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5.
Gain:
40 ±1 DB
6.
Output Level :
+10
DBM nominal +16 DBM maximum peaks
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7.
Input Level:
+16 DBM maximum
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8.
Attack Time:
essentially instantaneous (10 usee)
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9.
Release Time:
approximately 0.06 seconds for 50% release,