Larson Davis HVM100, Manual

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A-2 HVM100 User Manual 4/11/03
rotational motion on passenger and crew comfort in fixed-
guideway transport systems
ISO 5349-1:2001 Mechanical vibration -- Measurement and
evaluation of human exposure to hand-transmitted vibration
-- Part 1: General requirements
ISO 5349-2:2001 Mechanical vibration -- Measurement and
evaluation of human exposure to hand-transmitted vibration
-- Part 2: Practical guidance for measurement at the work-
place
Effects of Temperature
The RMS level varies
±
0.5 dB when the complete instru-
ment is tested over the - 10° C to 50° C temperature range.
The reference reading, for this test, is taken at 20° C and
36% relative humidity (RH); the input signal is at 79.6 Hz.
Effects of Humidity
The RMS level varies
±
0.5 dB when the complete instru-
ment is tested over the 30% to 90% RH range. This test is
performed at 40° C, with an input signal of 79.6 Hz.
Limits of Temperature and
Humidity
Permanent damage can occur when stored or operated above
60° C or below -20° C. Condensation of moisture will make
readings inaccurate. When condensation dissipates, readings
should return to normal.
Effects of Magnetic Fields
The RMS level varies
±
0.5 dB when the complete instru-
ment is tested in an 80 A/m, 60 Hz magnetic field (worst
case orientation).
Effects of Mechanical
Vibrations
The instrument meets the specifications for susceptibility to
vibration in accordance with ISO 8041:1990(E) section 7.1.
Stabilization Time
At power-on, allow the instrument to stabilize, approxi-
mately 20 seconds, prior to performing any measurements.
When changing from one type of input (Direct/Charge/
ICP®) to another or when changing the instruments gain set-
tings, allow 10 seconds of stabilization time prior to per-
forming a new measurement.
Data Storage
• 1/2 Mega Byte Memory