©
Agilent Technologies 1989–2002
Agilent 3070 / 79000 Site Preparation
10-109
Chapter 10: Site Preparation – Power Requirements for Older Systems: Tester Power Requirements (Series I/II)
Tester Power
Requirements
(Series I/II)
This section contains:
■
■
Connecting a Pigtail to the E1135C PDU
■
44964A/B PDU Electrical Requirements
■
E1099A PDU Electrical Requirements
■
E1170-80003 PDK Electrical Requirements
■
E1131A PDU Electrical Requirements
■
Agilent 3070 Series II / 3 - E1135A/B Power
CAUTION
✸
For Agilent 3070 Series I, II systems, improper ac
mains wiring is the most common site preparation
problem. To avoid problems, you must verify the
source and make sure that the system drop
conductor is sized correctly.
NOTE
The references in this chapter to two-phase power
assume that you will be using a one-phase,
center-tapped main to obtain the two phases.
NOTE
The external mains breaker should be located
close to the 3070 family system. Some high
voltages are present in the test system even with
the tester breaker off. Having the external breaker
close to the system will allow service personnel to
turn off all power quickly.
NOTE
You cannot accurately measure the input current
of the system’s power supplies using conventional
50/60-hertz current probes because the input
current waveforms are rich in harmonics. Any
current-measuring instrument should have a
bandwidth exceeding 10 kilohertz. Using
improper instruments can yield results that are 50
percent less than actual. Also, current demand
depends on the tests that are running on the
system.
Identifying the PDU/PDK Type
This section describes planning and wiring mains power
to the system. Plan to have an electrician run the power
drop for the mains power before the Agilent
representative comes to install the system. Use
on page 10-110 to determine the type or types of
PDU or PDK that your system will have. Electrical
requirements and power options for each of these are
described in the following sections.