Local Operation
During remote operation, the 6404/6408 is controlled by a remote GPIB or RS-232C
controller, and the green indicator LED of “RMT” remains turned on. To return from remote
to front panel operation, press the Local
key.
When in “SHIFT” mode, the user needs to press SHIFT
key to return to normal mode
before pressing
Local key.
3.9 Protection
During operation, if the 6404/6408 senses under voltage (UVP), over current (OCP),
shortage (SHT), over power (OPP), over temperature (OTP), or fan failure (FAN), the red
indicator LED of “PROTECTION” turns on and the protection circuit is enabled to shut down
the outputs. Before restart the output, the user must eliminate the condition that causes the
6404/6408 to react to “PROTECTION”. For detail description and recovery suggestion,
please refer to Troubleshooting in section 5.
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