Agilent Technologies E1441A user service Aborting a Calibration in Progress

<read the CAL? response; "0"=cal OK, "1"=cal error>

Aborting a Calibration in Progress

Sometimes it may be necessary to abort a calibration after the procedure has already been initiated. When performing a calibration from the remote interface, you can abort a calibration by issuing a remote interface device clear message.

Frequency and Burst Rate Adjustment

The function generator stores two calibration constants related to frequency and burst rate output. The constants are calculated from the adjustment value entered and are stored at the completion of each setup.

1.Use a frequency meter to measure the function generator output

frequency for SETUP 00 in the following table. These adjustments use a 50Ω output termination.

Table D-11. Frequency and Burst Rate Adjustment Setups

	Nominal Output
SETUP	FREQUENCY	AMPLITUDE
00 a	1.00 kHz	10 Vpp	Adjustment for main frequency
			generator, sine wave output
01	500 Hz	10 Vpp	Adjustment for burst rate timing,
			pulse output.

a. A new calibration (SETUP 86 - Rev 4.0) has been added as an alternative to SETUP 00. The new calibration outputs a 10 MHz sine wave, rather than the 1 MHz signal used for SETUP 00. The new calibration reduces slew rate dependent errors in the frequency measurement and is especially important when calibrating the Phase-Lock Assembly (Option 001). Note that either setup is sufficient to calibrate the carrier frequency and you don’t need to perform both.

2.Send the CAL:VALue <measured frequency> to the function generator.

3.Send the CAL? command to the function generator to initiate the calibration.

4.Repeat steps 1, 2 and 3 for SETUP 01.

5.Perform the “Frequency Verification” on page 167.

178 Service Procedures Appendix D