HP 8560A Service Manual page 80

10. Frequency Response Adjustment
Equipment
Synthesized Sweeper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Measuring Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Splitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Adapters
Type N (m) to Type N (m) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Type N (f) to APC 3.5 (m) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Type APC 3.5 (f) to APC 3.5 (f) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5061-5311
Cables
APC 3.5,91cm(36in)
Procedure
1. Connect the equipment as shown in Figure 2-13. Do not connect the HP 8482A Power
Sensor to the HP 11667B Power Splitter.
2. Zero and calibrate the HP 8902A/HP 8482A combination in log mode (power levels read
out in dBm) and connect the power sensor through an adapter to the power splitter.
3. Place the WR PROT/WR ENA jumper on the A2 Controller assembly in the WR ENA
position.
4. Press [PRESET) on the HP 8560A and set the controls as follows:
C E N T E R F R E Q
SPAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . OHz
RES BW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300kHz
dB/DIV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2dB
)
5. Press on the HP 8340A/B and set the controls as follows:
PRESET
CW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..lO MHz
POWERLEVEL
6. On the HP 8560A, press
The current value of the RF Gain DAC should be displayed in the active function area.
7. Enter the appropriate Power Sensor Calibration factor into the HP 8902A.
8. Set the HP 8340A/B [cw) output to the frequency indicated in the active function area of
the HP 8560A display. Adjust the HP 8340A/B POWER LEVEL for a -10 dBm reading
on the HP 8902A.
9. On the HP 8560A, adjust the RF Gain DAC value using the front-panel knob or keypad
until the marker reads -10 dBm +/-.10 dB.
10. On the HP 8560A, press II) to proceed to the next frequency.
11. Repeat steps 7 through 10 for all low band frequencies.
PREV MENU STORE DATA
Press
2-46 Adjustment Procedures
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...8120-4921
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..lO MHz
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -4 dBm
YES
on the HP 856OA.
HP 8340A/B
HP 8902A
HP 8482A
HP 11667A
1250-1475
1250-1750
then FLATNESS.