Getting Started
3.
Connect the power cord that was provided with the instrument to the power connector on the rear panel. Connect the
power cord plug to a properly grounded electrical outlet.
4.
Push the power button on the front panel.
To power off the instrument, push the front panel power button.
WARNING.
To satisfy safety requirements, always use load wires heavy enough not to overheat when carrying the maximum
short-circuit output current of the power supply. If there is more than one load, then every pair of load wires must be capable
of safely carrying the full-rated current of the power supply.
What to Do if the Power Supply Does Not Turn On
To solve problems you might encounter when turning on the instrument, follow these steps:
1.
Verify that there is AC power to the power supply.
First, check that the AC power cord is
fi
rmly plugged into the power connector on the rear panel of the power supply.
You should also make sure that the AC power source you plugged the power supply into is energized. Then, check
that the power supply is turned on.
2.
Verify the power-line voltage settings.
Check that the line voltage selector switch on the bottom of the instrument is set to the proper value for your country
(110 V
AC
or 220 V
AC
). Change the voltage setting if it is not correct.
NOTE.
Under certain circumstances, powering the instrument from a mains voltage for which it is not con
fi
gured can
cause the mains fuse to open.
3.
Verify that the correct power-line fuse is installed.
If the fuse is damaged, replace the fuse for your power supply.
If you set the line selection to 110 V, use a 5 A, TH 250 V fuse.
If you set the line selection to 220 V, use a 2.5 A, TH 250 V fuse.
4.
If you need more help, contact Tektronix.
4
PWS2185, PWS2323, PWS2326, and PWS2721 User Manual
