6. Record down both multimeter and power meter measured value.
7. Convert the multimeter measurement in Vrms to dBm using equation below:
dBm = 10 × log
10
(20 × Vrms
2
)
8. Calculate the crossover measurement error across both measurement instrument.
Crossover @100 kHz (dB) = Power meter measured value in dBm – Multimeter converted value in dBm
9. Compare the measured value to the test limits shown in the table by using formula below:
Flatness error above 100 kHz (dB) = Multimeter converted value in dBm (Step 7) – 1 kHz reference point (Step
4)
10. Set the instrument to each of the output described in the table below and measure the amplitude by using
power meter and power sensor.
Waveform Generator
Measurement
Output Load
Function
Amplitude
Frequency
Nominal
Error
50 Ω
Sine
0.190 Vrms
500.0 kHz
0 dB
±0.15 dB
1.000 MHz
2.000 MHz
5.000 MHz
50 Ω
Sine
0.190 Vrms
10.00 MHz
0 dB
±0.30 dB
15.00 MHz
20.00 MHz
11. Record down the power meter measured value.
12. Each result measured under Step 10 are required to be corrected by crossover error and 1 kHz reference point
error. Use equation below.
Flatness error above 100 kHz (dB) = Power meter measured value in dBm (Step 7) – Crossover @100 kHz (Step
8) - 1 kHz reference point (Step 4)
13. Compare the measured value to the test limits shown in the table.
14. For EDU33212A only. Connect multimeter to channel 2 output and repeat steps 2 through 13.
Keysight EDU33210 Series Service Guide
23
