BNC 1105 Universal Counter - Manual (Page 87)

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MODE/TRG > Pulse-Period > internal PLL.
6. Under the Agilent 81110A operation, press LEVELS and then
Output1 and Output2 buttons to set Amplit to 1V and the Offset to
0V respectively.
7. Under the Agilent 81110A operation, press TIMING button, and
set the Freq1 & Freq2 to ON, and adjust them to 1MHz
respectively.
8. Under the Agilent 81110A operation, in the Output1 set the Delay
to 0s, DtyCyc to 50 % and LeadE to 0.8ns. And in the Output2 set
the Delay to 125ns, DtyCyc to 50% and LeadE to 0.8ns.
9. Connect from the OUTPUT1 and OUTPUT2 of the Agilent 81110A to
the Counter’s CH1 and CH2 respectively.
10. Press the softkey under RunCal to do the calibration. Then, the
counter’s display will show “Calibrating…”. The finished message
will disappear from the display as calibration is done. On the
contrary, the NG message will show on the display as calibration is
failed.
6.12 How to do the Standard Timebase Calibration
The calibration is for 10MHz. Please do the following procedures to finish
the calibration.
1. After powering the counter, users have to warm it up at least 30
minutes.
2. Press UTILITY > CAL > Enter Security Code > Cal Diag > T-F Freq.
3. Input 10 MHz source to the counter’s CH1.
4. The standard specification for a 10 MHz is 10.000,000,00 MHz
±1Hz.
5. Press the softkey under RunCal to do the calibration. Then, the
counter’s display will show “Calibrating…”. The finished message
will disappear from the display as calibration is done. On the
contrary, the NG message will show on the display as calibration is
failed.