16 PRODIGIT
3.1.8 Load ON/OFF Key and LED Indicator
Whether or not the electronic load input end of 3260A series High Power is loaded
with current can be controlled by Load ON/OFF Key. Under Load OFF condition and
upon Load ON, the electronic load of 3260A series High Power will return to the load
condition set originally and Load LED is ON indicating that the electronic load is at
present under Load ON condition and is ready at any time to be loaded with the load
current of the AC/DC input power source.
! CAUTION
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Turn off the load when applying the output of the equipment under test to the
3260A series load. Then, turn the load on. If you are making the connection with the
load turned on, be sure to turn off the output of equipment under test.
If a relay or electromagnetic switch is inserted between the load input connector and
the output connector of the equipment under test, turn on the relay or
electromagnetic switch when the load is turned off. Then, turn the load on.
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If you are repeating the operation of turn on/off the output of the equipment under
test when using the 32611A series load, turn on the output only after the load input
terminal voltage reaches approximately 0V after turning off the output. If you do not,
the internal bias power supply stays off, and the specified current may not be
supplied.
3.1.9 Watt ON/OFF Key and LED Indicator
Depressing Watt Key will be ON, further depressing will be OFF, further depressing
will be ON again and so on. ON means Watt ON, e.g., to indicate the Watt VA
condition of actual loading. OFF means Watt OFF, e.g., to indicate the voltage and
current condition of actual loading.
3.1.9.1
Under Preset OFF condition, the upper 4 1/2 digit monitor displays the
Watt consumed for electronic loading while the lower 4 1/2 digit monitor
displays the VA flowing into electronic load with the unit as
〝
W
〞
,
〝
VA
〞
respectively and the unit indicator will come on.
3.1.9.2
Under Preset ON condition, both upper and lower 4 1/2 digit monitors will
have different displays with the change of working mode as shown below:
3.1.9.2.1 C.C.Mode:
The setting value of Level A/B load current can be displayed on
the lower 4 1/2 digit monitor with the unit as
〝
Arms
〞
and LED
indicator will come on.
3.1.9.2.2 Linear C.C. Mode:
The setting value of Level A/B load current can be displayed on
the lower 4 1/2 digit monitor with the unit as
〝
Arms
〞
and LED
indicator will come on.
3.1.9.2.3 C.R.Mode:
The setting value of Level A/B load resistance can be displayed
on the lower 4 1/2 digit monitor with the unit as
〝
Ω
〞
and LED
indicator will be ON.
