Specifications

Chapter 2: Installation
APx511 Installation 7
USB ports directly connected to the PC mother-
board, typically at the rear of the PC.
Connect the APx511 mains power cord to the instrument
and to a source of ac mains power. See Setting up the
hardware below for more information about mains connec-
tions.
Turn the instrument on by rocking the mains power switch
up to ON ( | ). The mains power switch is located in the
power entry module on the rear of the APx511. Windows
will detect the presence of the APx511 on the USB port and
will open the Hardware Update Wizard to search for the
correct software driver. Select “Install the software automat-
ically.” Windows will find the Audio Precision driver soft-
ware installed with APx500 and connect to the APx511.
Launch APx500 by double-clicking on the installed short-
cut. With the APx511 connected, you may be asked to
update the instrument firmware during the first launch of
the measurement software. APx500 will start, and in a short
time you will be presented with the opening screen. Refer to
the APx500 User’s Manual for more information about
making measurements.
The APx500 User’s Manual is available as a PDF
on the APx500 Application Disc and online at
ap.com; a hard-copy version can be ordered from
Audio Precision or your local distributor.
Setting up the hardware
Connecting your instrument to the electrical
mains supply
The APx511 instrument must be connected to a 50–60 Hz
alternating current (ac) electrical mains supply, maximum
voltage 250 Vrms.
The instrument has been configured at the factory for the
expected voltage at its intended destination, as ordered. The
voltage setting and fusing arrangement will normally be
correct unless the instrument has been transported into
another area. The power entry module has a strip of indica-
tor tape showing its mains voltage setting. This tape must
be removed before use.
You MUST be sure that the APx511 instrument
mains power configuration is correct for the elec-
trical mains power supplied in your area. If you
are not sure, do not plug the instrument into the
mains power. Follow the instructions below to
check or change the instrument mains supply
voltage selection.
The mains power supply is applied to your APx511 instru-
ment through the power entry module located on the rear
panel. Before connecting the power cord, confirm that the
input voltage selection and fusing arrangement in the power
entry module are correct for your mains power supply.
Figure 2. Detail of power entry module on
APx511 instrument rear panel.