Technical data

20 U8001A/U8002A User’s and Service Guide
1 Quick Start
Current Output Checkout
The following steps check basic current functions with a
short across the power supply's output.
1 Turn on the power supply.
Make sure that the output is disabled. The OFF
annunciator is on.
2 Connect a short across (+) and (–) output terminals with
an insulated test lead. Use a wire size sufficient to handle
the maximum current (refer to the American Wire Gauge
standard).
3 Enable the output.
The CV or CC annunciator turns on depending on the
resistance of the test lead. Notice that the display is in
the meter mode.
4 Adjust the voltage limit value to 1.0 volt.
Set the display to the limit mode. Adjust the voltage limit
to 1.0 V to assure CC operation. The CC annunciator will
be turned on. To go back to normal mode, press the key
again or let the display time out after several seconds.
5 Set the knob to the current control to check that the
front- panel ammeter properly responds to knob control.
Turn the knob clockwise or counter clockwise when the
display is in the meter mode (the Limit annunciator is
off). Check that the ammeter responds to knob control
and the voltmeter indicates nearly zero (the voltmeter will
show the voltage drop caused by the test lead).
6 Ensure that the current can be adjusted from zero to the
full rated value.
7 Turn off the power supply and remove the short from the
output terminals.