Specifications

RIGOL Chapter 2 Performance Verification Test
DS2000 Performance Verification Guide
2-8
20MHz Bandwidth Limit Test
Specification:
Amplitude Loss -3 dB to 1 dB
Explanation:
Amplitude Loss (dB) = 20×lg
(Vrmsn/Vrms1)
. Wherein, Vrmsn represents Vrms2 and Vrms3.
Test Device: Fluke 9500B
Test Procedures:
1) Connect the active head of Fluke 9500B to CH1 of the oscilloscope, as shown in the figure
below.
2) Set the output impedance of Fluke 9500B to 1 MΩ.
3) Configure the oscilloscope:
a) Press CH1 in the vertical control area (VERTICAL) at the front panel to enable CH1.
b) Rotate VERTICAL SCALE to set the vertical scale to 100 mV/div.
c) Rotate HORIZONTAL SCALE
to set the horizontal time base to 200 ns.
d) Rotate HORIZONTAL POSITION
and VERTICAL POSITION to set the
horizontal position and vertical position to 0 respectively.
e) Rotate TRIGGER LEVEL to set the trigger level to 0 V.
4) Press CH1  BW Limit and use to select “20 MHz” bandwidth limit.
5) Output a sine waveform with 1 MHz frequency and 600 mVpp amplitude from Fluke 9500B.
6) Press MENU Vrms at the left of the screen to enable the root mean square
measurement function of the oscilloscope. Read and record Vrms1.
7) Output a sine waveform with 20 MHz frequency and 600 mVpp amplitude from Fluke 9500B.
8) Rotate HORIZONTAL
SCALE
of the oscilloscope to set the horizontal time base to 20
ns.
9) Press MENU Vrms at the left of the screen to enable the root mean square
measurement function of the oscilloscope. Read and record Vrms2.
10) Calculate the amplitude loss and compare it to the specification: Amplitude Loss (dB) =
20×lg
(Vrms2/Vrms1)
. Amplitude loss should be in the range of the specification at this point.
11) Output a sine waveform with 50 MHz frequency and 600 mVpp amplitude from Fluke 9500B.
12) Rotate HORIZONTAL
SCALE
of the oscilloscope to set the horizontal time base to 10
ns.
13) Press MENU Vrms at the left of the screen to enable the root mean square
measurement function of the oscilloscope. Read and record Vrms3.