Fluke 6080A - Remote Reference Oscillator Calibration Procedure 3-16.

CLOSED-CASE CALIBRATION
Perform the following to execute the front panel reference oscillator calibration
procedure:
1. Set the rear panel CAL|COMP switch to the 1 (on) position.
2. Enter special function 994 to initiate the procedure.
3. Connect the 6080A/AN's RF output to the FLUKE 1953A's FREQA input.
4. Select the FREQA input, 1 second gate time, and the continuous trigger mode.
5. Use the edit knob to change the adjustment value until the counter reads 100 MHz.
6. Press the key twice to store the new data.
Remote Reference Oscillator Calibration Procedure 3-16.
The following paragraphs describe the remote reference oscillator calibration
procedure, the remote commands used in the procedure, and the elements required to
build a functioning controller program. Refer to the heading "Remote Calibration"
(earlier in Section 3) for general information relating to all remote calibration
procedures.
A complete program listing that runs on a Fluke 1722A controller is provided in
Appendix G.
The basic structure of the level calibration program is shown in Figure 3-5.
initiate the reference oscillator calibration procedure with "CAL_REFOSC"
initialize frequency counter
MAIN_LOOP:
request the RF frequency with "CC_FREQ?"
if( frequency = 9e9) goto DONE
read frequency counter
send reading to 6080A/AN with "CC_RDFREQ"
goto MAIN_LOOP
DONE:
store new data in calibration memory with "CC_SAVE"
end
Figure 3-5. Basic Structure of the Reference Oscillator Calibration Program
3-16