BRUEL & KJAER 2203 Instructions And Applications

7. USE WITH OTHER INSTRUMENTS
The 2203 can serve as the input to many instruments, providing var-
ious degrees of sophistication in analysis and recording. The reader is
referred
to the individual Instruction Manuals of the instruments used,
and
also to the book "Application of B & K Equipment to Acoustic Noise
Measurements" for detailed discussion of many applications and noise
analysis techniques.
7.1. SYSTEMS CONSIDERATIONS
When connecting the 2203 with other instrumentation, the following
should be considered.
1. Be
sure the impedance and output/input levels of the instruments
are matched. If the output level from the 2203 is too high, the input
gain on the succeeding instrument must be reduced or an attenuator
must be placed between the two.
2. Adjust the gain of the total system using a calibration reference (such
as a Pistonphone, Sound
Level Calibrator, or built-in reference volt-
age). Gain adjustments must be made in the order of the signal
path, beginning with the 2203. Each instrument should be optimized
for maximum dynamic range and crest factor capability.
3.
Once the various gain controls of the system have been set, only the
attenuators on the 2203 should be adjusted as the signal or meas-
urement conditions vary.
4.
When absolute level measurements are required an accurate calibra-
tion must be used. Notes should then be made of all subsequent at-
tenuator adjustments of the 2203 with respect to the calibration
level. In the tape recording of sound, the recording of the calibration
reference level is also vital.
7.2. LEVEL RECORDERS
The AC output of the 2203 provides a signal suitable for the recording
of continuous, non-impulsive sounds. The dynamic range of the output
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BRUEL & KJAER 2203 Specifications

General

Brand	BRUEL & KJAER
Model	2203
Category	Measuring Instruments
Language	English