Performance Veri
fi
cation
AC Voltage Accuracy and Bandwidth Test
1.
Connect the test setup as shown. (See Figure 5 on page 13.)
2.
Set all channels on the oscilloscope to:
Coupling: AC
Probe Type: Voltage, Attenuation: 1:1
Input Options: Polarity: Normal, Bandwidth: Full
Measure: Measurements V ac
Acquire Options: Glitch: Off, Memory: Short, Average: Off, Waveform: Normal
Ground level centered vertically
3.
Set the oscilloscope to display Channel 1.
4.
Set the oscilloscope vertical sensitivity to 500 mV/div.
5.
Set the oscilloscope horizontal sensitivity to 400 nS/div.
6.
Set the calibration generator output voltage to 2.545 Vpp.
7.
Set the calibration generator frequency to the
fi
rst value in the table. (See Table 8.)
8.
Enable the calibration generator output.
9.
Verify that the measured output voltage is within the range shown in the measured value column.
10.
Continue through the test values remaining in the table for Channel 1.
11.
Set the generator output to 0 V and to standby.
12.
Repeat steps 3 through 11 for the remaining channels on the oscilloscope. Trigger on the appropriate channel as needed.
Table 8: AC voltage accuracy and bandwidth test setup values
Oscilloscope
Generator
Model
Horizontal setting
Voltage
Frequency
Measured value
all
400 nS/div
2.545 Vpp
1 MHz
835 mV to 965 mV
all
20 nS/div
2.545 Vpp
25 MHz
790 mV to 1.010 V
THS3014
5 nS/div
2.545 Vpp
100 MHz
>630 mV
THS3024
2 nS/div
2.545 Vpp
200 MHz
>630 mV
Technical Reference
17
