BNC 1105 Universal Counter - Manual (Page 85)

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4. Adjust the voltage on the Agilent 33220A, and let the DMM
displays +5.000V ±0.001V.
5. Remove the input source, from the DMM, on the counter.
6. 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.
6.9 How to do the Time Domain Calibration
(Including External ARM)
The calibration is for Time Domain excluding the Time Interval. Please do
the following procedures to finish the calibration.
1. Press UTILITY > CAL > Enter Security Code > Cal Diag > T-F
Quick.
2. Under the Agilent 33220A operation, the procedures should be
Utility > DC ON > Output Setup > Load.
3. Adjust the square wave to 20MHz, and set the Ampl to 1.65Vpp,
the Offs to 0.75Vdc and DutyCycle to 50% on the Agilent 33220A.
4. Connect Agilent 33220A’s Sync to the Counter’s External ARM.
5. Under the Agilent 81110A operation, the procedures should be
MODE/TRG > Pulse-Period > internal PLL.
6. Under the Agilent 81110A operation, press LEVELS and then
Output1 buttons to set Amplit to 1V and the Offset to 0V.
7. Under the Agilent 81110A operation, press TIMING, and set the
Freq to ON, and adjust it to 1MHz. Besides, in the output1, set the
Delay to 0s, DtyCyc to 50 % and LeadE to 0.8ns.
8. Connect from the OUTPUT1 of the Agilent 81110A to the Counter’s
CH1.
9. 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.