The Pro Co Monoface IT-1 Isolation
Transformer Unit provides an easy-to-use,
high-quality solution for interface problems
that demand the high degree of electrical
isolation that only a transformer can
provide. Transformer isolation minimizes
interference from SCR lighting dimmers,
radio transmitters and 60 Hz AC power
wiring with a common-mode voltage range
that makes it far more forgiving of
improper connections or fault conditions
than any “active”, “electronic” or
“differential” transformerless circuit. This
makes transformer-floated outputs essential
for “goof-proofing” portable sound
reinforcement systems and installations.
FREQUENCY RESPONSE:
20 Hz-20 kHz, +/- .5 dB @ 0 dBv output.
-3 dB @ approximately 85 kHz.
TOTAL HARMONIC DISTORTION:
Less than .25% 20 Hz-20 kHz @ 0 dBv output.
Less than .5% 30 Hz-20 kHz @ +18 dBv output.
Less than 1% 20 Hz-20 kHz @ +18 dBv output.
PHASE RESPONSE:
Less than -3 degrees @ 20 kHz (ref. 1.0 kHz).
RISE TIME:
Less than 4.5 microseconds (2.0 kHz square wave, 10%-90%).
Phase response and rise time measurements are essentially those of
the driving amplifier used rather than those of the LOT-1 transformer.
INPUT IMPEDANCE:
Greater than 680 ohm @ 1.0 kHz.
Greater than 680 ohm @ 10 kHz.
Nominal source impedance is 0 ohm.
OUTPUT IMPEDANCE:
Less than 120 ohm @ 1.0 kHz.
Less than 120 ohm @ 10 kHz.
Nominal output impedance is 600 ohm.
VOLTAGE LOSS:
Less than 2.0 dB @ 1.0 kHz.
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