User manual

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3.4.2 Local Mode setting.
The operation mode of the unit is clearly indicated in the VFD display above
REM/LOC, in which REM indicates remote mode and LOC indicates local mode.
If the unit received any of the set commands through the RS232 port, it will
automatically go into REM mode. When this happens, front panel keys will be
disabled except for the LOC button. To set instrument back to local mode, press
the LOC key. The display will then show LOC to indicate local mode.
Note: READ? command will not automatically set instrument into remote mode.
3.4.3 Range Selection
User can select the output voltage range by using the RANGE switch. This will
allow the user to select between 135 V range or 270 V range. The selected output
voltage range is clearly displayed on the VFD display below RANGE label as LOW
for 135V range and HI for 270V range.
CAUTION: DISCONNECT THE LOAD CONNECTED TO THE OUTPUT
TERMINALS BEFORE CHANGING THE RANGE.
3.4.4 Alarm
This is a red LED indicating OL (over load), SC (short circuit), or OT (over
temperature) status. This LED will remain on even if any of the protection status
disappears. The alarm can be reset by pressing the RESET switch on the front
panel.