Performance Veri
fi
cation
Trigger Sensitivity Test
1.
Connect the test setup as shown in the previous test. (See Figure 5 on page 13.)
2.
Reset the oscilloscope: Power off, press and hold Utility, power on, wait for double beep then release Utility button.
3.
Set all channels on the oscilloscope to:
Probe Type: Voltage, Attenuation: 1:1
Input Options: Polarity: Normal, Bandwidth: Full
Acquire Options: Glitch: Off, Memory: Short, Average: Off, Waveform: Normal
Ground level centered vertically
Horizontal scale: 10 ms/div
4.
Set the oscilloscope to display Channel 1.
5.
Set the oscilloscope vertical sensitivity to 2 V/div.
6.
Set the calibration generator to the initial value in the table for the oscilloscope model that you are testing. (See Table 7.)
7.
Enable the calibration generator output.
8.
Adjust the calibration generator output voltage until the displayed waveform amplitude matches the value listed in
the last column of the table. (See Table 7.)
9.
Verify that the oscilloscope has triggered on the signal. If it has not, manually adjust the trigger level to display a
stable signal.
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 4 through 11 for the remaining channels on the oscilloscope. Trigger on the appropriate channel as needed.
Table 7: Trigger sensitivity test setup values
Oscilloscope
Generator
Output
Model
Horizontal
Vertical
Initial input voltage
Frequency
Waveform
amplitude
All
200 ns/div
2 V/div
100 mV pp
5 MHz
0.5 div
10 ns/div
100 mV/div
400 mV pp
100 MHz
1 div
THS3014
10 ns/div
100 mV/div
800 mV pp
150 MHz
2 div
10 ns/div
100 mV/div
400 mV pp
200 MHz
1 div
THS3024
10 ns/div
100 mV/div
800 mV pp
250 MHz
2 div
16
Technical Reference
