Larson Davis SoundTrack LxT, Руководство пользователя

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LxT Manual LxT2
B
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13
l) Typical Stabilization Time
The typical time interval needed to stabilize after changes in environmental conditions:
For a temperature change of 5°C then 30 minutes are required.
For a static pressure change of 5 kPa then 15 seconds are required.
For a humidity change of 30% (non-condensing) then 30 minutes are required.
m) Field Strength > 10 V/m
The Larson Davis model LxT1 was not measured for field strengths greater than 10 V/m.
n) Radio Frequency Emission
The mode of operation of the LxT1 that produces the greatest radio frequency emission levels was
with the LxT1 set to run and with an LxT-EXC010 (10' microphone extension cable) used to connect
the PRMLxT1 to the LxT1. Adding the USB cable did not emit more radio frequencies levels.
o) AC Power and Radio Frequency Susceptibility
The mode of operation of the LxT1 that produced the greatest measurement susceptibility to A.C.
power frequency and radio frequency fields was with the LxT1 set to run, USB cable attached and
with an LxT-EXC010 (10' microphone extension cable) between the PRMLxT1 and the LxT1.
LxT2
Section 9.2.4
a) Calibrator
The calibrator to be used with the LxT2 is the Larson Davis Model CAL150.
b) Calibrator Frequency
The calibration check frequency is 1000 Hz.
c) Calibration Procedure
For calibration refer to the chapter "Calibration" on page 7-1.