HP 8559A - 5-60

ADJUSTMENTS MODEL 8559A
ADJUSTMENTS
5 - 28. FREQUENCY RESPONSE ADJUSTMENTS (Cont'd)
5.
Set spectrum analyzer controls as follows:
REF LEVEL FINE
.......................................................... 0 dBm
REFLEVELdBm ............................................................ - 20
INPUTATTEN
............................................................. 10dB
Amplitude Scale ........................................................ 10 dB/DIV
FREQ SPAN/DIV .......................................................... F (full)
RESOLUTIONBW
......................................................... 3MHz
FREQUENCYBANDGHz .................................................. .01-3
TIME/DIV ............................................................... 20msec
TRIGGER ............................................................ FREERUN
BLCLIP .................................................................... OFF
VIDEOFILTER
............................................................. MIN
ALTIF
..................................................................... OFF
SIGIDENT
................................................................. OFF
TUNING
................................................................ 2.5GHz
.01- 3 GHz Adjustment
6.
Place sweep oscillator plug - in RF OFF/ON switch to ON.
7. Adjust sweep oscillator controls for a CW output of 2 GHz at - 7 dBm.
8.
Disconnect power
meter/power sensor and connect 20 dB attenuator directly to analyzer RF INPUT as
shown in Figure 5
- 16.
9. Adjust sweep oscillator controls for full sweep.
10.
Adjust Tuning Voltage Circuit GAIN control fully clockwise then adjust OFFSET control to center
phase-
locked signal on CRT. Refer to Figure 5-18a.
FIGURE 5 - 18. ILLUSTRATION OF PHASE - LOCKING PROCEDURE