User manual

Introduction and Installation
1-6
AM700 Audio Measurement Set User Manual
The mains fuse provides protection in the event of a major failure of the AM700
power supply. Two sizes of fuses are specified, one for 115 V operation and the
other for 230 V operation. Refer to Fuse Rating on page A-27 of Appendix A for the
correct fuse rating to use for each voltage range.
3. Replace the fuse with the correct one, as indicated on the rear panel, for the
new mains voltage selection.
CAUTION. Use only the power cord and connector specified for your product. Use
only a power cord that is in good condition with a proper safety ground connector.
4. Replace the power cord with the correct one for use with the local mains
outlets.
5. Turn on the rear power switch. Then turn on the front power switch to operate
the AM700.
A detachable three-wire power cord with a three-contact plug is provided with each
instrument for connecting to both the power source and protective ground. The
protective-ground connector in the plug connects (through the protective-ground
conductor) to the accessible metal parts of the instrument. For electrical-shock
protection, insert this plug only into a power-source outlet that has a properly
grounded protective-ground contact. The voltage to ground from either pole of the
power source must not exceed 250 V
RMS
. For electric-shock protection, the
grounding connection must be made before making connections to the instrument
input or output terminals.
At power up the AM700 normally bypasses the power-up diagnostics and starts the
FFT application. You can start an application other than FFT by pressing and
holding in the front-panel button for the application you want to start as you turn on
the front panel power switch. The AM700 will beep twice, and you can then release
the application front-panel button. To run the power-up diagnostics, press and hold
in the front-panel Limits button as you press the front-panel power button. The
AM700 beeps twice, displays the message ‘Start mode “RUN DIAGNOSTICS”
recognized,’ and then runs the diagnostics before initialization.
Power Cord
Power Up
Procedure