Model 90 Quantifier Sound Level Meter
Page 15
Installing the software
Before measurements can be downloaded from the MODEL 90 instrument, the Analyser
software must be installed from the supplied CD.
Please refer to page 50 for further details of the installation of the Analyser software.
Assembly
The MODEL 90 instruments are supplied fully assembled apart from the MV:200
Preamplifier for Class 1 instruments and the batteries.
Preamplifier
The Class 1 versions of the MODEL 90 (MODEL 91, MODEL 93 and MODEL 95) are
supplied with a removable preamplifier, the MV:200D. Also, a removable preamplifier
may be fitted as an option to the Class 2 instruments.
This preamplifier must be connected to the Sound Level Meter before the unit is
switched on. This unit is connected to the top of the MODEL 90 using a locking ring. To
connect the MV:200D Preamplifier, follow the diagram below:
(1)
Place the preamplifier into the socket on the Sound Level Meter
(2)
Ensure the connector has located into the socket
(3)
Tighten the Locking Ring.
Do not cross thread the locking ring. Damage caused by misuse is not covered by the
warranty for the instrument.
Removing the Preamplifier
Do not twist the preamplifier body. Unscrew the locking ring and pull the
