This procedure can be performed with one of three types of measurement
device; a broadband ACrms voltmeter, a power meter, or a thermal
voltage converter. The procedure differs slightly depending upon the type
of measurement device used. These adjustments us a 50
W output termination.
1 Use a DMM to measure the ACrms output voltage of the function generator
and enter the measurement value for the setup in the table below.
Nominal Output
SETUP FREQUENCY AMPLITUDE Reference for:
64 1 kHz 3.0 V rms 1 kHz flatness DAC gain
2a. If you are using a broadband ACrms voltmeter, proceed to step 3.
b. If you are using a power meter capable of measurements at 1 kHz,
use the power meter to measure the function generator output and enter
the value for the setup in the table below. (If your power meter does not
measure to 1 kHz, see the transfer measurement procedure below.)
Nominal Output
SETUP FREQUENCY AMPLITUDE Reference for:
83 1 kHz 3.0 V rms V rms, dBm
Transfer Measurement Procedure
If you are using a power meter not capable of measurement to 1 kHz,
you can perform the transfer measurement at a different frequency.
For example, the Agilent E4418A Power Meter with the Agilent 8482A
probe and 20 dB attenuator are specified to a low frequency of 100 kHz.
To use this measurement device, perform step 1, then use setup 65 to
obtain a 100 kHz output. Measure the output with the power meter and
record the measured value. Perform setup 83 and enter the recorded
value (not a new measurement). Then, perform step 3 (you will use setup
65 twice). This procedure assumes the output of the function generator is
flat from 1 kHz to 100 kHz.
c. If you are using a Thermal Voltage Converter (TVC), use the TVC to
measure the function generator output and enter the measurement for
the setup in the table below (TVC values entered are in mVdc).
Nominal Output
SETUP FREQUENCY AMPLITUDE Reference for:
84 1 kHz 3.0 V rms Thermal Voltage Converter
Chapter 4 Calibration Procedures
AC Amplitude Flatness Adjustment
78
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