Chapter 1 Quick Start
Output Checkout
18
Output Checkout
The following procedures check to ensure that the power supply develops its
rated outputs and properly responds to operation from the front panel. For
complete performance and verification tests, refer to the Service Information.
Note: If an error has been detected during the output checkout procedures,
the ERROR annunciator will turn on. See "Error Messages" starting on page
113 in chapter 5 for more information.
Voltage Output Checkout
The following steps verify basic voltage functions with no load.
1 Turn on the power supply.
The power supply will go into the power-on / reset state; the output is disabled
(the OFF annunciator turns on); its low voltage range is selected, and the OVP
annunciator and low voltage range indication annunciator turn on (for
example, 8V annunciator turns on for the E3640A model); and the knob is
selected for voltage control.
2 Enable the outputs.
The OFF annunciator turns off and the CV annunciator turns on. Notice that
the display is in the meter mode. ‘‘Meter mode’’ means that the display shows
the actual output voltage and current.
3 Check that the front-panel voltmeter properly responds to knob
control for both low and high voltage range.
Turn the knob clockwise or counter clockwise to check that the voltmeter
responds to knob control and the ammeter indicates nearly zero. The flashing
digit can be adjusted by turning the knob.
4 Ensure that the voltage can be adjusted from zero to the full rated
value by adjusting the knob.
1You can use the resolution selection keys to move the flashing digit to the
right or left when setting the voltage.
Power
On/Off
Output
1