Agilent Technologies Ininiium 9000 Especificaciones descargar pdf (Pagina 73)

Chapter 4: Testing Performance

Time Scale Accuracy (TSA)

Connections

Connect the equipment as shown in the following figure.

Procedure

Configure the sine wave source to output a 0 dBm (600 mVpp) sine wave into 50 ohms with

a frequency of 10.00002000 MHz.

2 Adjust source amplitude such that displayed sine wave is 600 mVpp.

3 Press the Default Setup key on the oscilloscope.

4 Set channel 1's vertical scale to 100 mV/div.

5 Set the oscilloscope sample rate to 100 kSa/s. (The resulting measurement will be aliased.)

6 Set the scope's horizontal scale to 20 ms/div.

7 Set the measurement thresholds for all waveforms to a fixed voltage level of 0 V and ±20 mV

hysteresis.

8 Enable a frequency measurement on channel 1.

9 On the oscilloscope, press Stop.

10 Press Clear Display.

11 Press Run, wait until 10 acquisitions have accumulated, and then press Stop.

12 Convert the average frequency value to time scale error by subtracting 20 Hz and dividing by

10 Hz/ppm.

13 Record the time scale error value as well as the time since the previous calibration (in years).

14 Calculate the specification for Time Scale Accuracy based on the oscilloscope’s age using the

following formula:

TSA = ±(0.4 + 0.5(Years Since Factory Calibration)) ppm peak

9000A Oscilloscope

channel input

E8257D Sine Wave Source

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Agilent Technologies Ininiium 9000 Especificaciones Pagina 73