User manual

RIGOL Chapter 2 Performance Verification Test
MSO4000/DS4000 Performance Verification Guide
2-2
Impedance Test
Specification
Input Impedance
Analog Channel
1 MΩ: 0.99 MΩ to 1.01 MΩ
50 Ω: 49.25 Ω to 50.75 Ω
Test Connection Diagram
Figure 2-1 Impedance Test Connection Diagram
Test Procedures
1. Impedance test of CH1-CH4 when the input impedance is 1 MΩ
1) Connect the active signal terminal of Fluke 9500B to CH1 of the oscilloscope, as shown in the
figure above.
2) Configure the oscilloscope:
a) Press CH1 in the vertical control area (VERTICAL) at the front panel to turn on CH1.
b) Press CH1  Input to set the input impedance of CH1 to 1 MΩ.
c) Rotate VERTICAL SCALE to set the vertical scale of CH1 to 100 mV/div.
3) Turn on Fluke 9500B; set its impedance to 1 MΩ and select the resistance measurement
function. Read and record the resistance measured.
4) Rotate VERTICAL
SCALE to adjust the vertical scale of CH1 of the oscilloscope to 500
mV/div; read and record the resistance measured.
5) Turn off CH1. Measure the resistances of CH2, CH3 and CH4 respectively using the method
above and record the measurement results.
2. Impedance test of CH1-CH4 when the input impedance is 50 Ω
1) Connect the active signal terminal of Fluke 9500B to CH1 of the oscilloscope, as shown in the
figure above.
2) Configure the oscilloscope:
a) Turn on CH1.
b) Set the input impedance of CH1 to 50 Ω.
c) Set the vertical scale of CH1 to 100 mV/div.
3) Turn on Fluke 9500B; set its impedance to 50 Ω and select the resistance measurement
function. Read and record the resistance measured.
4) Adjust the vertical scale of CH1 of the oscilloscope to 500 mV/div; read and record the
resistance measured.
5) Turn off CH1. Measure the resistances of CH2, CH3 and CH4 respectively using the method
above and record the measurement results.
Fluke 9500B
MSO/DS4000