Front Panel Operation
Instructions for Wideband Measurements 4
4-31
Measure with a Fluke A40, A40A or Custom Shunt
To make a current measurement with the Fluke A40, A40A, or Custom shunt:
1. Setup the A40, A40A, or Custom shunt as instructed in Load and Edit a
Fluke A40/A40A or Custom Current Shunt.
2. Connect the shunt to the INPUT 1 or AUX input using the special Fluke
adapters previously prescribed. Refer to Connect an A40/A40A or Custom
Shunt to the AUX Input.
3. Select INPUT 1 or AUX from the front panel.
4. On the Main Menu, choose Select Current Shunt. A40, A40A, and Custom
shunts are organized by their serial number.
5. Select the desired shunt. Once selected, the shunt information is now
shown on the main screen next to the current measurement. At any time,
select Shunt Details to view the shunt information.
6. If desired, set and average a dc reference to use transfer mode. See
Instructions for Transfer Mode.
7. Apply the ac current under test. Transfer results are shown and
continuously updated on the display.
Instructions for Wideband Measurements
The Option 5790B/3 (30 MHz) or 5790B/5 or 5790B/AF (50 MHz) Wideband AC
Voltage modules allow the Product to measure the frequency flatness of a 50 Ω
source signal generator such as the 5730A Wideband output. The 5790B
Wideband option measures signals from 600 µV to 7 V over a frequency range of
10 Hz to 30 MHz (Option 5790B/3) or 50 MHz (Option 5790B/5 and 5790B/AF).
The input impedance is 50 Ω on all ranges.
To measure frequency flatness of a source using the WIDEBAND input (requires
a Wideband Option):
1. Connect the 50 Ω source to the WIDEBAND input.
2. Push
and set the range as desired.
3. Set the source to a voltage under 7 V, 1 kHz.
4. Push the Set Reference softkey to store a reference.
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