D.W. Fearn VT-1 Provozní pokyny stáhnout pdf (Strana 15)

D.W. FEARN

VT-1 &

VT-2 Microphone Preamplifers

SPECIFIC

TIONS

Input

150 ohms

Input Load

Impedance 1.5k ohms

Minimum Input

Level -65 dBm nominal

Maximum Input

Level @ 20 cps

-30 dBm without pad

-5 dBm with 20 dB pad

Gain 53 dB minimum

Frequency

Response

± 0.2 dB 20 cps to 20 kc

± 0.5 dB 11 cps to 28 kc

-3 dB @ 0.5 cps & 50 kc

THD + Noise

<0.25% 20 cps to 20 kc

Intermodulation

Distor

tion

SMPTE: <0.80%

Signal to

Noise Ratio 74 dB minimum

Equivalent

Input Noise

-124 dbm maximum

Output low-Z, transformer balanced

Maximum

Output Level +22 dBm unterminated

Power

Requirements 100, 120, or 220 VAC

50/60Hz, 25 W

Dimensions

19” (48.26cm) W

5.25” (13.34cm) H

9” (22.86cm) D (VT-2 13” 22.9cm)

Weight VT-1 14 lbs (6.35 kg)

-2 18 lbs (8.16kg)

1 2 ... 10 11 12 13 14 15 16 17 18 19 20 ... 39 40

D.W. FEARN 1
Final Test Report 5
Table of Contents 7
Limited 5-Year Warranty 9
History of the VT-1 and VT-2 11
SPECIFIC 15
DESCRIPTION 17
Y OF OPER 31
MAINTENANCE 35
LP- 1 Line Pad Accessory 39

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