Agilent Technologies 83620A, Service Manual

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#231 YTM Gain; Band 7
#238 YTM Oset; Band 1
#239 YTM Oset; Band 2
#240 YTM Oset; Band 3
#241 YTM Oset; Band 4
#242 YTM Oset; Band 5
#243 YTM Oset; Band 6
#244 YTM Oset; Band 7
86. Initiate auto tracking on the syn thesizer as follo ws. T erminate the RF
OUTPUT with a go o d 50 imp edance match suc h as a 10 dB attenuator
or a p o w er sensor (not required for syn thesizers with a step attenuator).
Press:
4 USER CAL 5
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
Tracking Menu
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
Auto Track
W ait for the syn thesizer to complete auto tracking. If auto tracking fails
(an error message is display ed) rep eat the gain and oset adjustmen ts for
the failed frequency .
87. On the syn thesizer, set:
4
ST ART
5 4
2.0
5 4
GHz
5
4 STOP 5 4 20 5 4 GHz 5
4 CONT 5 4 SWEEP TIME 5 4 1.5 5 4 sec 5
4 ALC 5
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
Leveling Point Intrnl (asterisk on)
4
POWER LEVEL
5 4
25
5 4
dBm
5
F or the HP 83640A/50A only , also press:
4 SERVICE 5
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
Tools Menu
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
Disable Doubler (asterisk o )
Connect the p o w er meter to the syn thesizer RF OUTPUT through
the p o w er sensor and 10 dB attenuator (see Figure 3-18). Adjust the
oscilloscop e horizontal con trol to place the low p o w er p oint on a v ertical
graticule and note the p osition.
Select man ual sw eep. Press SWEEP 4 MENU 5
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
Manual Sweep (asterisk on).
Use the arrow k eys to adjust the CW frequency to the minimum p o w er
p oint on the oscilloscop e.
On the p o w er meter, c hec k that the p o w er at this p oint is not less than
the sp ecied maximum lev eled p o w er (note that p o w er is attenuated b y
10 dB). If it is, note the lev el and frequency , and c hec k the following:
3-70 Adjustments
Amplifier/Filter Adjustments
HP 8360
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