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56 Local Operation
Changing the programming range can cause the present CC settings (main level, transient level, and slew rate) to be
automatically adjusted to fit within the new range. For example, assume that you are programming the Agilent 6060B 300
Watt Electronic Load, the present range is 0 to 60A "C:RNG 60.000", and the present CC settings are:
"CURR 10.000" - main level is 10 A
"C:TLV 12.000" - transient level is 12 A
"C:SLW 5.0000" - slew rate is 5 A/
µ
s
If you now select the 0 to 6 A range "C:RNG 6.0000", the settings will automatically change to the following:
"CURR 6.0000" - main level is 6 A
"C:TLV 6.0000" - transient level is 6 A
"C:SLW .50000" - slew rate is 0.5 A/
µ
s
Examples
The following examples illustrate how to set CC values. Before you do these examples, press
to
set the CC values to their factory default states (see Table 4-6).
1. Set Range
a. Press
to select the CC function. Now press to determine the range setting. Note that the
display indicates "C:RNG " and the maximum high range CC value. This means that the high range is
selected.
b. Select the low range by pressing
c. Press and check that the display indicates "C:RNG" and the maximum low range CC value.
This means that the low range is selected.
2. Set Main Level
a. Press
and note that the display indicates "CURR" and the minimum low range CC value.
b. Set the main current level to 0.5 amps by pressing
.
c. Press
again and check that the display indicates "CURR 0.5000".
Note that you can use the
ENTRY keys to increment ( ) or decrement ( ) the main level CURR setting. You
can see the CURR setting being incremented or decremented one step at a time each time you press the applicable Input
key. The values are entered automatically (you don’t press the Enter key). Remember that if the CC mode is active, the
incremented or decremented values will immediately change the actual input.
3. Set Slew Rate
a. First press the
(blue shift key) and note that the Shift annunciator goes on. Now press
(shifted Tran Level key) to determine the slew setting. Note that the display indicates "C:SLW" and the
maximum slew rate setting for the low range.
b. Set the slew rate to 0.0025 A/
µ
s by pressing
c. Press and again and check that the display indicates “C:SLW 0.0025" (or the closest
slew rate step to this value depending upon the model being programmed).
4. Set Transient Level - The transient current level "C:TLV" is meaningful only if transient operation (described later)
is turned on.
Note: Remember that you set the main current level to 0.5 amps in step 2. In CC mode, the transient level must
be set to a higher level than the main level.
a. Set the transient level to 1 amp by pressing