Front Panel Operation
Using an Auxiliary Amplifier 4
4-37
4-34. 5725A Amplifier Output
WWarning
Boosted voltage operation produces high voltage at higher
current levels than normally available from the calibrator.
During boosted voltage operation, the potential risk of injury or
fatal accident is greater than during normal operation.
Note
Refer to the 5725A Instruction Manual for setup and installation
instructions.
The 5725A Amplifier boosts ac voltage and both ac and dc current. Proceed as follows to
set a boosted output from the 5725A Amplifier:
1. Install the 5725A if you have not already done so as described in the 5725A
Instruction Manual.
2. If the “Boost Amp Types” setting in the setup menus has been changed from the
default, select the 5725A for boost operation as described at the beginning of this
chapter.
3. Make sure the calibrator and 5725A are in standby (STANDBY annunciator lit).
Press O if necessary.
4. If the UUT is not connected, connect it now as described earlier in this chapter under
“Connecting the Calibrator to a UUT.” Note that for boosted current, you connect to
the 5725A binding posts, and for boosted voltage, you connect to the calibrator’s
binding posts.
5. Set the UUT to read the appropriate quantity.
6. Enter the desired output value as described under “Setting the Output.” Current
entries beyond the standard range of the calibrator automatically select the amplifier.
Voltage entries in the 220-1100V range automatically select the amplifier. Note
that the 5725A takes over the 1100V range of the calibrator.
7. Boosted voltage output is available at the front or rear panel of the calibrator
(depending on which set of terminals is active). Boosted current output is available at
the front panel of the 5725A Amplifier. When the 5725A binding posts are selected,
the Control Display announces the output location. If your entry has caused a change
of output location, you must press O to activate the amplifier.
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