3390 50 kHz Arbitrary Waveform / Function Generator Verification and Adjustment Manual Section 1: Verification procedures
3390-905-01Rev. B / May 2016
1-7
2. Set the outputs (found in the table below) and measure the output voltage with the DMM. Press
Utility
to set the output impedance to high–Z. Assure that the output is enabled.
Keithley Instruments 3390
Measurement
Output setup
Function
Frequency
Amplitude
Nominal
Error*
High Z
Sine wave
1.000 KHz
20.0 mV
RMS
0.020 V
RMS
±0.00091 V
RMS
High Z
Sine wave
1.000 KHz
67.0 mV
RMS
0.067 V
RMS
±0.00138 V
RMS
High Z
Sine wave
1.000 KHz
200.0 mV
RMS
0.200 V
RMS
±0.00271 V
RMS
High Z
Sine wave
1.000 KHz
670.0 mV
RMS
0.670 V
RMS
**
±0.00741 V
RMS
High Z
Sine wave
1.000 KHz
2.000 mV
RMS
2.000 V
RMS
***
±0.0207 V
RMS
High Z
Sine wave
1.000 KHz
7.000 mV
RMS
7.000 V
RMS
****
±0.0707 V
RMS
High Z
Sine wave
1.000 KHz
9.000 mV
RMS
0.900 V
RMS
±0.0100 V
RMS
* Based on 1 % setting ±1 mV
pp
(50
Ω) which is converted to V
RMS
for high-Z.
** Enter the measured value on the worksheet as 1 KHz_0dB_reference.
*** Enter the measured value on the worksheet as 1 kHz_10dB_reference.
**** Enter the measured value on the worksheet as 1 kHz_20db_reference.
3. Compare the measured voltage to the test limits shown in the table.
Low frequency flatness verification
This procedure checks the AC amplitude flatness at 100 KHz using the reference measurements
recorded in the Amplitude and Flatness Verification Worksheet. An error value is established by these
measurements and used to set the power meter reference. The transfer measurements are changed
to the frequency of 100 KHz using the DMM and the power meter.
1. Set the DMM to measure AC volts. Connect the DMM. This process is shown on the previous
page.
2. Set each output of the instrument (shown in the table below) and measure the output voltage with
the DMM. Press
Utility
to set the output impedance to high-Z. Be sure the output is enabled.
Keithley Instruments 3390
Measurement
Output setup
Function
Frequency
Amplitude
Normal
Error
High Z
Sine wave
100.000 KHz
670.0 mV
RMS
0.670 V
RMS
*
± 0.0067 V
RMS
High Z
Sine wave
100.000 KHz
2.000 mV
RMS
2.000 V
RMS
**
± 0.020 V
RMS
High Z
Sine wave
100.000 KHz
7.000 mV
RMS
7.000 V
RMS
***
± 0.070 V
RMS
* Enter the measured value on the worksheet as 100 kHz_0dB_reference.
** Enter the measured value on the worksheet as 100 kHz_10dB_reference.
*** Enter the measured value on the worksheet as 100 kHz_20dB_reference.
3. Compare the measured voltage to the test limits shown in the table.
4. All the required measurements on the worksheet have been recorded. Complete the worksheet
by calculating all the indications.
