Agilent Technologies 8360 L Series, Service Manual

Page: 268 / 603

200 MHz Loop V CO Tune Check
5.
In the A6 adjustmen t men u, select the A6 V CO tune c hec k
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
A6 VCO Tune .
6. The follo wing message should b e display ed:
Ctrimand C60 are OK.
If this message is not display ed, refer to troublesho oting.
Note
If the three tuning v oltages at the b ottom of the display (V200, V a vg, and
V220) are all equal, the 200 MHz phase-lo c k ed lo op is unlo c k ed.
7. Select
NNNNNNNNNNNNNN
Done .
Sampler Match Adjustment
8.
In the A6 adjustmen t men u, select the A6 sampler match adjustmen t,
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
A6 Smplr Match .
Note
The sampler match display is a graphic represen tation of the sampler match
o v er the full frequency range of the 200 MHz lo op. The more asterisks
display ed at a frequency , the more output signal (and the b etter the match) at
that frequency . Make the adjustmen t for b est match o v er the full frequency
range of the lo op.
9. Adjust A6C82 and A6C83 ( Figure 3-5 ) for b est o v erall sampler match.
Figure 3-5. Sampler Match Adjustment Locations
10.
Select
NNNNNNNNNNNNNN
Done .
Agilent 8360 Adjustments
Sampler Assembly
3-11