3390 50 kHz Arbitrary Waveform / Function Generator Verification and Adjustment Manual Section 1: Verification procedures
3390-905-01Rev. B / May 2016
1-9
Connect the power meter to measure the output amplitude of the instrument as shown below.
1. Set up the function generator with the following parameters.
•
Output impedance: 50
Ω by pressing
Utility
and select
Output setup
.
•
Waveform: Sine
•
Frequency: 100 KHz
•
Amplitude: 3.51 dBm
2. Make sure that the output is enabled.
3. Set the current reading as the reference value on the power meter using the relative power
function. This can lead you to compare future measurement results in dB.
4. Set the power meter offset to equal the 100 KHz_0dB_offset value which was calculated
previously. This sets the power meter to directly read the flatness error specification relative to
1 KHz. 100 KHz_0dB_offset is calculated on the Amplitude and Flatness Verification Worksheet.
5. Set the 3390 to each output described in the following table and measure the output amplitude
with the power meter (the relative measurement in dB.)
Keithley Instruments 3390
Measurement
Output setup
Function
Amplitude
Frequency
Nominal
Error
50 Ω
Sine wave
+2 dBm
100.000 KHz
0 dB
±0.1 dB
50 Ω
Sine wave
+2 dBm
500.000 KHz
0 dB
±0.15 dB
50 Ω
Sine wave
+2 dBm
1.000 MHz
0 dB
±0.15 dB
50 Ω
Sine wave
+2 dBm
5.000 MHz
0 dB
±0.15 dB
50
Ω
Sine wave
+2 dBm
10.000 MHz
0 dB
±0.3 dB
50 Ω
Sine wave
+2 dBm
15.000 MHz
0 dB
±0.3 dB
50 Ω
Sine wave
+2 dBm
17.000 MHz
0 dB
±0.3 dB
50 Ω
Sine wave
+2 dBm
20.000 MHz
0 dB
±0.3 dB
50 Ω
Sine wave
+2 dBm
25.000 MHz
0 dB
±0.5 dB
50 Ω
Sine wave
+2 dBm
29.000 MHz
0 dB
±0.5 dB
50 Ω
Sine wave
+2 dBm
37.000 MHz
0 dB
±0.5 dB
50 Ω
Sine wave
+2 dBm
47.000 MHz
0 dB
±0.5 dB
50 Ω
Sine wave
+2 dBm
50.000 MHz
0 dB
±0.5 dB
6. Compare the measured output to the test limits shown in the table.
