Tektronix RTX100B, Service Manual

Page: 65 / 178

Performance Verification
RTX100B ISDB-T RF Signal Generator Service Manual
3-19
2. Set the oscilloscope as indicated below:
Vertical scale 200 mV/div . . . . . . . .
Input impedance 50
Ω
. . . . .
Horizontal scale 1.25 ns/div . . . . .
Trigger position 50% . . . . . .
Acquire mode Average 32 . . . . . . .
Trigger mode AUTO . . . . . . . .
Trigger source CH1 . . . . . . .
Trigger level 0 V . . . . . . . .
Trigger slope Rising Edge . . . . . . . .
Input coupling DC . . . . . . .
Measure Amplitude, Rise Time, Fall Time . . . . . . . . . . . .
Ref Level High Ref 80%, Low Ref 20% . . . . . . . . . .
Gating Cursor Curs1 Pos1: --2.5 ns/Curs2: 2.75 ns . . . . . . . . . . . . .
3. Open the test40.TRP file on the RTX100B.
a.
Select
File
>
Open
in the Play screen to open the
Select File
dialog box.
b. In the dialog box, select the test40.TRP file.
4.
Press the
Play/Pause
button to start playing the test40.TRP file.
5. Use the oscilloscope to verify that the amplitude, rise and fall times are as
follows:
Amplitude: 720 mV to 880 mV
Rise and fall time:
≤
1.2 ns