Clear an overtemperature protection (OTP) event
The instrument prominently displays an OTPTRIPPED message to indicate an OTP event. In addition,
the triangle above ERR will flash continuously until the error event is cleared.
The output will be automatically turned OFF when OTP occurs.
The overtemperature event will be logged in the Error list, and you must clear the OTP event before the
output can be turned ON again.
1.
To begin, correct the condition that caused the OTP event and allow the instrument to cool.
2. Press [Menu].
3. Turn the knob to Error and press the knob. The instrument will briefly display a message like 3
ERRORS (the number will vary) to indicate how many errors are in the queue.
4.
Turn the knob to cycle through the error codes, recording them as you go. Press the knob to view
the error description. Press [Menu] to exit and clear the error list.
An OTP event will occur again after it is cleared if the instrument remains overheated.
Lock and unlock the front panel
If you are in a menu, you must exit the menu before locking the front panel.
1. Press [Lock / Unlock] to lock the front panel. This produces an LCK annunciator triangle, as shown
below.
2.
If you press a key after the front panel is locked, the display will read HOLDKEY. That message indic-
ates that you must press and hold the [Lock / Unlock] key to unlock the front panel and clear the
LCK triangle.
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