User manual

LABKON Series
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14 GMC-I Messtechnik GmbH
2.5 Power-On Checkout
The power-on test includes an automatic self-test that checks the internal microprocessors and a system self-test after the
power supply is turned on, which examines the information relate to self-test process shown on the front panel. You will
observe the following sequence on the display:
2.6 1. Self-test started
It begins with an initial operation immediately after pressing the power switch on. Then the self-test starts,
involving the test of the internal microprocessors and the whole power supply system.
2.7 2. Self-test accomplished
If no error or abnormity has been detected during self testing, the supply will enter into power-on/reset state and the output
will be switched off.
In this figure, “OFF” indicates that the supply output is switched off.
2.8 3. Enabling the output
Press “Output on/off” to enable the output. The “OFF” annunciator on the lower right corner of the display
vanishes, while the “ON” and “CV” annunciators at the same place turn on. And the display switches to
monitor mode automatically to monitor the actual value of the output voltage and current.
If power-on self-test has detected any error or abnormity, the “ERROR”annunciator is lit. For specific
information about errors, please see related chapters in appendix.