Dynalabs DYN-IS-5 Посібник з експлуатації - Сторінка 10
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3.2) Power Requirements
DYN-IS-5 has an external power amplifier which is powered by its power
adaptor. Please note the output voltage and current ratings of the adaptor if
a replacement adaptor is to be used.
3.3) Cooling
DYN-IS-5 does not require forced cooling. Air convection cooling is
sufficient for the force levels given in the specifications.
3.4) Frequency Response
The DYN-IS-5 has a relatively flat force response of 5N after 140Hz and
can achieve 5N at approximately 50 Hz. The following figure shows the
Force (Newton) over applied Voltage (Volt) frequency response of DYN-
IS-5.
FOR FIXED FREQUENCY SINE TESTING, APPLICATION OF VOLTAGE
LEVELS
ABOVE
0.5V
FOR
LONG
DURATIONS
(>1MIN)
CAN
PERMANENTLY DAMAGE THE SHAKER.
THE SHAKER SUSPENSION NATURAL FREQUENCY IS ABOUT 74 HZ.
ESPECIALLY FOR FIXED FREQUENCY SINE TESTING, THE USER
SHOULD ALWAYS LOWER THE GAIN FOR THE FREQUENCY BAND OF 50-
170 HZ. OTHERWISE, DUE TO THE HIGH RESPONSE OF THE SHAKER
AROUND ITS RESONANCE FREQUENCY, VERY HIGH AMPLITUDES OF
VIBRATION (⁓70N) WILL OCCUR AND PERMANENTLY DAMAGE THE
SHAKER.
THE INTERNAL SINE SIGNAL GENERATOR SUPPLIES A CONSTANT
VOLTAGE OF 0.3VAC. PLEASE LOWER THE GAIN IN THE VICINITY OF
THE NATURAL FREQUENCY AS HIGHLIGHTED ABOVE.
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