Aeroflex 3901 - Chapter 2 Installation; In T Ro D U C T Ion; In Itia L Vis Ua L in Sp Ec Ti O N; Ins T a Ll at Ion Re Qu Ir Em en Ts

Subject to Export Control, see Cover Page for details.
2-1
Chapter 2
Installation
Introduction
This chapter describes the following:
● Preparing the 3900 for first time use.
● Checking the 3900 when it has been used under unknown conditions, for example, when a Test
Set is used by several technicians.
● Interconnections to various control connectors, printer connectors and other input and output
connectors.
Initial Visual Inspection
Unpack the Test Set according to the section titled Service Upon Receipt of Material located in the
front section of this manual and inspect unit for signs of damage.
Installation Requirements
Ventilation
The 3900 is force air-cooled by three fans that draw air through vents in the sides of the case.
Do not obstruct the air vents while the instrument is in use. Avoid standing the instrument on or
close to other equipment that is hot.
Connecting to AC Power Supply
The 3900 is a Safety Class 1 test instrument which must be grounded before use. The power
cord supplied with the Test Set, or an appropriate replacement, should be used to connect the
Test Set to a grounded AC supply outlet. Ensure that the power cord is properly connected to
the AC Power Connector
on the rear panel of the Test Set prior to connecting unit to an AC
supply outlet.
The 3900’s PSU automatically selects the appropriate power supply range when the Test Set is
connected to an AC power supply source which is within the ranges specified in the 3900
Platform Specifications.
Disconnecting from AC Power Supply
The detachable AC power cord is the Test Set’s disconnecting device. If the instrument is
integrated into a rack or test system, an external power switch or circuit breaker may be
required. The Test Set’s disconnecting device should be easily reached and accessible at all
times.
AC Power Fuse
A 3 A, 250 V, Type F, 20 mm cartridge fuse (F3AL250V) is included in the unit’s supply current
path to the Power Supply Module. The AC Power Fuse is located in the fuse carrier located on
the rear of the Test Set. Refer to Appendix C, Fuse Replacement Instructions and Appendix B,
3900 Platform Specifications
for additional information.