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Agilent Technologies 1989–2002
Agilent 3070 / 79000 Site Preparation
11-9
Chapter 11: Site Preparation – Series 3 / 79000 Current Reduction Conversion: Series 3 Current Reduction Conversion Procedure
Power down the system using the PDU on/off switch.
Have the electrician disconnect the PDU from the
"mains" and use the lock-out, tag out
1
procedure to
ensure that the power remains off.
2
Set the DUT Power Supply’s Input Voltage
Each DUT power supply’s input voltage should be set to
220 or 240 volts, as appropriate to the system being
converted. Based on the power option of the system,
determine the DUT supply line voltage using
on page 11-11. Then
proceed with the instructions for the model of DUT
power supply you are installing on the pages that follow
the table.
NOTE
Beginning with the serial numbers shown
on page 11-2, all DUT power supplies in
3070 / 79000 systems are factory configured to
220 or 240 volts. The outlets where the DUT
power supplies are connected may also have been
modified as described in the following sections, as
well as the
Repair I Manual
, E4000-90160,
Chapter 1.
NOTE
Option #05A is not available on the Corporate
Price List (CPL) after June 1999. The DUT
power supplies input voltage for Japanese systems
are set to 220 volts at the factory and the neutral
center tap is no longer used.
If Three-Phase Delta power (0ED) is not
available, use the Single-Phase power option
(AWY). 307X single-phase option AWY systems
will require two power drops.
Agilent 6621A and 6624A Line Voltage Settings
The 6621A and 6624A supplies can be set to accept ac
input voltage of 100, 120, 220, or 240 volts by
positioning the voltage selector card located inside of
the line module.
on page 11-13 shows the
location of the power module.
1
A “lock-out, tag-out procedure is used by electricians. The electrician turns the “mains” power switch off and places a hasp through the
“mains” power switch. The hasp has holes for pad-locks. A tag is placed on the lock which provides information regarding who put the
lock in place, the work being performed, when the lock was installed, when the lock will be removed, and the electrician’s supervisor.
Only the electrician who installed the lock or the electrician’s supervisor (under certain circumstances) may remove the lock and turn the
“mains” power switch on.
2
In some cases this may mean unplugging the system.
