PLZ-U Basic Operation 4-3
4.2 Load On/Off
There is a LOAD key on both the load unit and the frame. When the load is turned
on, the LED above and to the left of the key illuminates.
If you are repeating the operation of turning on/off the output of the equipment
under test when using the PLZ70UA, turn on the output only after the load input ter-
minal voltage reaches approximately 0 V after turning off the output. If you do not,
the internal bias power supply stays off, and the specified current may not be sup-
plied.
• When the step-by-step procedure to turning on/off the load was incorrectly
performed, it may cause the damage to the PLZ-U. Be sure to the proce-
dure on the next page as instructed to turning on/off the load.
• If you set the polarity of the load-on external control to low active and open the
signal input terminal, you will not be able to turn on the load from the panel. For
details, see “Turning the load on/off” in section 5.10.2, “CH CONT Connector.”
Fig. 4-2 INDEP key and LOAD key
CAUTION
NOTE
Load unit Frame
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