User manual

RIGOL Chapter 2 Performance Verification Test
MSO4000/DS4000 Performance Verification Guide
2-8
Bandwidth Test
The bandwidth test verifies the bandwidth performance of the oscilloscope by testing the amplitude
loss of the oscilloscope under test at full bandwidth.
Specification
Bandwidth
Amplitude Loss
[1]
-3 dB to 1 dB
Note
[1]
: Amplitude Loss (dB) = 20 × lg (Vrms2/Vrms1); wherein, Vrms1 is the measurement result of amplitude
effective value at 1MHz and Vrms2 is the measurement result of amplitude effective value at full bandwidth.
Test Connection Diagram
Figure 2-3 Bandwidth Test Connection Diagram
Test Procedures
1. Connect the active signal terminal of Fluke 9500B to CH1 of the oscilloscope, as shown in the
figure above.
2. Turn on Fluke 9500B and set its impedance to 50 Ω.
3. Configure the oscilloscope:
1) Press CH1 in the vertical control area (VERTICAL) at the front panel to turn on CH1.
2) Press CH1  Probe  Ratio to set the probe attenuation ratio to “1X”.
3) Press CH1  Input to set the input impedance of CH1 to 50 Ω.
4) Rotate HORIZONTAL SCALE to set the horizontal time base to 500 ns.
5) Rotate VERTICAL SCALE to set the vertical scale to 100 mV/div.
6) Press HORIZONTAL POSITION and VERTICAL POSITION respectively to set the
horizontal position and vertical position to 0.
7) Press TRIGGER LEVEL to set the trigger level to 0 V.
4. Output a Sine with 1 MHz frequency and 600 mVpp amplitude via Fluke 9500B.
5. Press MENU  Vrms-N at the left side of the screen of the oscilloscope to turn on the effective
value measurement function. Read and record Vrms1.
6. Output a Sine with 500 MHz frequency (the setting value is different for different model of
oscilloscope under test; please refer to Table 2-2) and 600 mVpp amplitude via Fluke 9500B.
Fluke 9500B
MSO/DS4000