52
2000/3000 X-Series Oscilloscopes Service Guide
2
Testing Performance
c
With 2000 X- Series oscilloscopes, connect a 50 ohm
feedthrough termination.
With 3000 X- Series oscilloscopes, set channel 1
Imped
to
50 Ohm
.
d
Set the time base to 500 ns/div.
e
Set the Volts/Div for channel 1 to 200 mV/div.
f
Press the
[Acquire]
key, then press the
Averaging
softkey.
g
Turn the Entry knob to set
# Avgs
to 8 averages.
4
Set the signal generator for 1 MHz and six divisions of
amplitude.
The signal on the oscilloscope screen should be about five
cycles at six divisions amplitude.
5
Set up the Amplitude measurement
a
Press the
[Meas]
key.
b
Press the
Clear Meas
softkey and then the
Clear All
softkey.
c
Press the
Type:
softkey and use the Entry knob to select
AC RMS - Full Screen (Std Deviation)
within the select menu.
d
Press the
Add Measurement
softkey.
6
Note the oscilloscope AC RMS - FS(1) reading at the
bottom of the screen. (This is the RMS value with any dc
offset removed.)
7
Set the power meter Cal Factor % to the 1 MHz value on
the calibration chart on the power sensor.
8
Note the reading on the power meter and covert to Vrms
using the expression:
For example, if the power meter reading is 892 uW, then
Vin
1MHz
= (892*10
- 6
* 50
Ω
)
1/2
= 211.2 mV
rms
.
Vin
1
MHz
Pmeas
1
MHz
50
Ω
×
=
Содержание 2000 X
Страница 1: ...s1 Agilent InfiniiVision 2000 3000 X Series Oscilloscopes Service Guide ...
Страница 12: ...12 2000 3000 X Series Oscilloscopes Service Guide Figures ...
Страница 14: ...14 2000 3000 X Series Oscilloscopes Service Guide Tables ...
Страница 22: ...22 2000 3000 X Series Oscilloscopes Service Guide 1 Characteristics and Specifications ...
Страница 144: ...144 2000 3000 X Series Oscilloscopes Service Guide 5 Replacing Assemblies ...
Страница 156: ...156 2000 3000 X Series Oscilloscopes Service Guide 6 Replaceable Parts ...
Страница 160: ...160 2000 3000 X Series Oscilloscopes Service Guide Safety Notices ...