Specifications

RIGOL Chapter 2 Performance Calibration Test
DS1000E/D Performance Verification Guide
2-10
Time Base Accuracy Test
Specification:
Time Base Accuracy
≤ ±50 ppm
Test Devices: Fluke 9500B or signal generator and BNC (m)-BNC (m) cable.
Test procedures:
1) Connect the active head of Fluke 9500B to CH1 of the oscilloscope.
2) Output a sine waveform with 1 MHz frequency and 1 Vpp amplitude from Fluke 9500B.
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 200 mV/div.
c) Rotate VERTICAL POSITION to set the vertical position to 0.
d) Rotate HORIZONTAL SCALE to set the horizontal time base to 20 ns.
e) Rotate HORIZONTAL POSITION to set the horizontal position to 1 ms.
4) Observe the display of the oscilloscope and measure the offset (ΔT) of the midpoint of the
signal relative to the center of the screen.
5) Calculate the time base accuracy, namely the ratio of ΔT to the horizontal position of the
oscilloscope. For example, if the offset of this test is 8 ns, the time base accuracy is 10 ns/1
ms=10 ppm.
Test Record Form:
Channel Test Result ΔT Calculation Result Limit Pass/Fail
CH1
±50 ppm