Performance Veri
fi
cation
Frequency Measurement Accuracy Test
1.
Connect the test setup as shown. (See Figure 4.)
Figure 4: Frequency measurement accuracy test setup
2.
Set all channels on the oscilloscope to:
Input Options: Polarity: Normal, Bandwidth: 20 MHz
Measure: Measurement on, Hz
Acquire Options: Glitch: Off, Memory: Short, Average: Off, Waveform: Normal
3.
Set the oscilloscope to display Channel 1.
4.
Set the oscilloscope vertical sensitivity to 100 mV/div.
5.
Set the calibration generator to the
fi
rst value in the table. (See Table 5.)
6.
Enable the calibration generator output.
7.
Verify that the measured output voltage on the oscilloscope is within the range shown under the appropriate column.
8.
Continue through the test values remaining in the table for Channel 1.
9.
Repeat steps 3 through 8 for the remaining channels on the oscilloscope. Trigger on the appropriate channel as needed.
10.
Set the generator output to 0 V and to standby.
Table 5: Frequency measurement accuracy test setup values
Model
Time base
Output mode
Voltage
Frequency
Measured value
all
20 ms/div
wavegen, sine
600 mV pp
16 Hz
15.90 to 16.10
THS3014
20 ns/div
leveled-sine
300 mV pp
100 MHz
99.3 to 100.7
THS3024
20 ns/div
leveled-sine
300 mV pp
200 MHz
198.8 to 201.2
Technical Reference
11
