22 APx515 B Series Audio Analyzer: Installation
online at ap.com; a hard-copy version can be
ordered from Audio Precision or your local dis-
tributor.
Connecting your instrument to the elec-
trical mains supply
The APx515 instrument must be connected to a 50–60 Hz
alternating current (ac) electrical mains supply, maxi-
mum 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 nor-
mally be correct unless the instrument has been trans-
ported into another area. The power entry module has a
strip of indicator tape showing its mains voltage setting.
This tape must be removed before use.
You MUST be sure that the APx515 instru-
ment mains power configuration is correct for
the electrical mains power supplied in your
area. If you are not sure, do not plug the instru-
ment into the mains power. Follow the instruc-
tions below to check or change the instrument
mains supply voltage selection.
The mains power supply is applied to your APx515
instrument through the power entry module located on
the rear panel. Before connecting the power cord, con-
firm that the input voltage selection and fusing arrange-
ment in the power entry module are correct for your
mains power supply.
Figure 2. Detail, power entry module on APx515
instrument rear panel. The mains power switch
is to the left.
Checking the mains supply voltage con-
figuration
The white plastic voltage indicator pin protrudes through
one of the four labeled holes in the module cover to indi-
cate the selected input voltage. Figure 2 shows the pin in
the second position, indicating 120 V. Check to see that
the indicated voltage matches your mains supply voltage.
If it does not, change the mains supply voltage configura-
tion as described below.
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