Ametek Amrel PLA 2U, Operation Manual

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M470039-01 REV-F Page 66
recommenda tion for improved performa nce without cha nging the turn -on sequence, the V-On threshold ca n be increa sed
to a voltage closer to the application’s operating voltage and the V-On detection mode changed to “Continuous”. By
ma king the necessa ry adjustments, both the DUT a nd eLOAD ca n operate under stable conditions to a void irre gula r
results. To a chieve best resu lts, the V-On Volta ge should be set to a level higher tha n the stabiliz ing volta ge of the power
supply or DUT, a nd higher tha n the eLOAD’s minimum opera ting volta ge. Plea se refer to “ Protection Fea ture” in section
one for a deta iled expla na tion of the different V-On modes.
Fault Signal: Ea ch time a protection fa ult trigge rs, the Fa ult pin becomes active TTL high. When this occurs, the
a ppropria te bits in the sta tus register a re set a nd the fa ult signa l is la tched. The status bits will rema in set until the
electronic loa d is reset via the GPIB or RS232 (*RST comma nd) or at the front pa nel (CLEAR key). The condition that
ca used the protection fea ture to trip must be corrected or the loa d will turn off a ga in.
Note: Because the protection is done through software, the response time for the delay trip time must be set to at least
50ms for each protection feature. Otherwise the load may not reset correctly if the trip delay time is too short.
MAX/MIN SETTING FUNCTION
To cha nge the va lues, press the "Menu/Loca l" key press Enter, then use the

keys to se lect the Ma x/Min Limit
function then the "ENTER" key. Use

keys to se lect the a ppropria te Min/Ma x setting by pressin g the "ENTER key.
The LCD will disp lay the current value, press the "ENTER" key to enter a new value and press the “ENTER” key to
confirm entry. Press “CLEAR” key to escape the Max/Min Setting MODE.
The following a re specia l eLOAD MAX/MIN settin gs tha t can be progra mmed to prevent erroneous va lue entry for
specific a pplica tions or specia l power sources tha t a re sensitive to ina ppropria te opera ting va lues.
MAX VOLTAGE - Max V
MIN VOLTAGE - 0.000V
MAX CURRENT - Max A
MIN CURRENT - 0.0000 A
MAX RESISTANCE - Max OHM
MIN RESISTANCE - 0.00 OHM
MAX POWER - Max W
MIN POWER - 0.00 W
CALIBRATION PARAMETERS
Please refer to “SECTION 5. CALIBRATION”.
OSCILLATE
This function selects between DISABLE/ OSC3/OSC2/OSC1/Defa ult System Ba ndwidth Settings. OSC3 & OSC2 ha ve a
slowe r tra nsient time ra nge a nd slower ba ndwidth a nd OSC1 & Defa ult ha ve a fa ster tra nsient time range a nd wider
ba ndwidth.
OSC DETECTION DISABLE AND DELAY FEATURES
For a pplica tions tha t utilize non-pure DC output power to the eLoad input, the OSC detection ca n be disabled by selecting
the “DISABLE” menu choice. The OSC Protection Delay can be increased to 10 seconds for applications that require a
buffer to a void fa lse protection trigger.
Please refer to the menu tree for detailed selection procedures.
Product used with oscillation protection turned off may cause product failure. Failure occurring as a result of
oscillation application or turn-off of this feature will not be covered under warranty.
CAUTION