Figure 3. Model 83525A plug-in - adjustment locations.

TB 9-6625-2124-35

(6) Enter data 1 GHz on keyboard. Record microwave frequency counter indication.

(7) Adjust autotransformer for 108 V ac output. Microwave frequency counter will

indicate within 20 kHz of value recorded in (6) above.

(8) Adjust autotransformer for 125 V ac output. Microwave frequency counter will

indicate within 20 kHz of value recorded in (6) above.

(9) Adjust autotransformer for a 115 V ac output.

b. Adjustments

(1) Press INSTR PRESET and STOP keys. Enter data 2 GHz on keyboard.

(2) Press TI (plug in) AMPTD MKR key (ON). Connect microwave frequency

counter to A8TP1 (fig. 3).

(3) Adjust A8C4 (fig. 3) for microwave frequency counter indication of 50,000,000

250 Hz (R).

Figure 3. Model 83525A plug-in - adjustment locations.