Specification - BRUEL & KJAER 1022 Instructions And Applications

Specification
Frequency Range: 20-20ooo c/ s.
Frequency Seales:
Main Scale: Logarithmic from 20- 20ooo c/ s.
Tolerance
±
o. 7 degrees of theoretical logarithmic curve. Vernier
driven.
Increment Scale: Range - 50 to +50 c/ s of main scale reading. Both
scales illuminated.
Frequency Accuracy:
Main scale: 1 %
±
1 c/ s.
Increment scale:
±
o.5 c/s.
Outputs:
Matching: Switchable matching impedance for 6, 60, 600 or 6ooo ohms
load.
Max. power output 2.5 watts approx.
Attenuator: Variable in steps of 10 dB (within
±
o.2 dB) from 125 , p ,V to
12.5 V. Continuously variable by potentiometer within each step.
Frequency Characteristic: In frequency range 20 to 20ooo c/s.
Better than
±
o.3 dB on ATTENUATOR OUTPUT.
Better than
±
o.5 dB on LOAD 1 watt loaded.
Voltmeter: Vacuum-tube voltmeter. Moving-coil. Illuminated mirrored scale.
Accurate, better than 1.5 % of full-scale deflection. Perfectly safeguarded
against overload.
Distortion:
Frequency in c/s
A TTENU A TOR terminal.
No load with 10 V
output approx .......... .
LOAD terminal.
(Loaded 1 watt) ....... .
20
1.0%
2.0%
Hum and Noise: 70 dB below
max. output.
Automatic Output Regulator:
200 2ooo
20ooo
o.1% o.1%
0.7%
o.3%
o.3% 1.2%
The built-in compressor amplifier maintains regulation up to 45 dB, and
a constant voltage current, or sound pressure to within 2 dB in fre-
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