Tektronix DG2030 User Manual page 219

Appendix B: Performance Verification
B 8
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Setup. Set the frequency counter to frequency measurement mode.
Characteristics Confirmation Procedure.
1. Load the TP1CLK.PDA test pattern file from the performance check disk.
When the file is loaded, the DG2030 clock frequency will be set to 400 MHz
internally and the PLL circuit will be turned on.
The following steps check the clock frequency accuracy with the PLL circuit on
and the internal clock frequency set to 400 MHz.
2. Press the START/STOP button on the front panel so that the button's LED
indicator lights.
3. Set the counter trigger to an appropriate value and confirm that the counter
displays a frequency in the range 399.9996 to 400.0004 MHz.
The following steps check the clock frequency precision with the PLL circuit on
and the internal clock frequency set to 200.1 MHz, 200 kHz and 100.0 mHz.
4. Press the following buttons to set the DG2030 clock frequency to
200.1 MHz.
Menu button Bottom button
SETUP Clock
5. Set the counter trigger to an appropriate value, and confirm that the counter
displays a frequency in the range 200.0998 MHz to 200.1002 MHz.
6. Change the frequency counter input to INPUT A through the 50 W termina-
tion with the BNC cable.
7. Set the DG2030 clock frequency to 200 kHz.
8. Set the counter trigger to an appropriate value, and confirm that counter
displays a frequency in the range 199.9998 kHz to 200.0002 kHz.
9. Set the DG2030 clock frequency to 100 mHz.
10. Set the frequency counter to period measurement mode.
11. Set the counter trigger to an appropriate value, and confirm that the counter
displays a frequency in the range 99.9999 mHz to 100.0001 mHz
Pop up menu Side button
Int FREQ
Front panel
button
200.1
MHz/ms
.
DG2030 User Manual