Equipment Setup For High Frequency Flatness; Low Frequency Verification - Fluke 5820A Service Manual

5820A
Service Manual
Connect the Calibrator Mainframe CHAN 1 connector to the 5790A WIDEBAND input
with the BNC(f) to Type N(m) adapter. Set the 5790A to AUTORANGE, digital filter
mode to FAST, restart fine, and Hi Res on.

3-45. Equipment Setup for High Frequency Flatness

All high frequency flatness procedures use the following equipment:
When high frequencies at voltages below 63 mV p-p are verified, use the
8481D Power Sensor. Otherwise, use the 8482A Power Sensor.
Connect the HP 437B Power Meter to either the 8482A or the 8481D Power Sensor. For
more information on connecting the two instruments, see the power meter and power
sensor operators manuals.
Connect the power meter/power sensor combination to the CHAN 1 connector on the
Calibrator Mainframe.
The Hewlett-Packard 437B Power Meter must be configured by setting the parameters
listed below. Zero and self-calibrate the power meter with the power sensor being used.
Refer to the Hewlett-Packard 437B Operators Manual for details.

3-46. Low Frequency Verification

This procedure provides an example of testing low frequency flatness using a 5.5 V
output. Follow the same procedure for testing other amplitudes, only compare results
against the flatness specification listed in Table 3-20.
1. Program the Calibrator Mainframe for an output of 5.5 V @ 500 kHz. Press on
2. Allow the 5790A reading to stabilize. The 5790A should display approximately 1.94
3. Enter 50 kHz into the Calibrator Mainframe. Allow the 5790A reading to stabilize,
4. Enter the next frequency listed in Table 3-20. Allow the 5790A reading to stabilize,
5. Enter 50 kHz into the Calibrator Mainframe. Allow the 5790A reading to stabilize,
6. Repeat steps 4 and 5 for all of frequencies listed in Table 3-20. Continue until you
3-36
Hewlett-Packard 437B Power Meter
Hewlett-Packard 8482A and 8481D Power Sensors
BNC(f) to Type N(f) adapter
N to BNC cable supplied with the Calibrator Mainframe
PRESET
RESOLN 3
AUTO FILTER
WATTS
SENSOR TABLE 0 (default)
the Calibrator Mainframe to activate the output.
V rms. Enter the 5790A reading in Column A of Table 3-20.
then enter the 5790A reading in Column B of Table 3-20.
then enter the reading into Column A of the table.
then enter the 5790A reading in Column B of Table 3-20.
have completed Columns A and B.
Note