HP 8560E - 11. Calibrator Amplitude Adjustment

100 Chapter2
Adjustment Procedures
10. Frequency Response Adjustment
10.On the HP 8560E/EC spectrum analyzer, adjust the RF Gain DAC
value using the front panel knob or keypad until the marker reads
−10 dBm ±0.10 dB. Each DAC count yields an approximate 0.01 dB
change.
11.On the spectrum analyzer, press
⇓ to proceed to the next frequency.
12.Repeat steps 7 through 10 for all low-band frequencies ≥10 MHz.
13.If the firmware revision is later than 920528, perform steps 13
through 17. Otherwise, skip to step 18.
14.Press
⇓ until 10 MHz is displayed in the active function block.
Record the RF gain DAC value at 10 MHz.
10 MHz RF gain DAC value ______________________
15.Add 67 to the 10 MHz RF gain DAC value and record as the 2 MHz
RF gain DAC value.
2 MHz RF gain DAC value _______________________
16.Add 62 to the 10 MHz RF gain DAC value and record as the 6 MHz
RF gain DAC value.
6 MHz RF gain DAC value ________________________
17.Press ⇓ until 2 MHz is displayed in the active function block. Use the
DATA keys to enter the 2 MHz RF gain DAC value recorded in step
14.
18.Press
⇓ until 6 MHz is displayed in the active function block. Use the
DATA keys to enter the 6 MHz RF gain DAC value recorded in step
15.
19.Press
PREV MENU STORE DATA, then YES on the HP 8560E/EC.
20.Place the WR PROT/WR ENA jumper on the A2 Controller assembly
in the WR PROT position.