Agilent Technologies HP 8566B Spécifications Page 273

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15. M/N Loop Adjustments
A7A4
AlZTPZ/A12TP3
M/N
LOCK INDICATOR
OUTPUT
DISABLE
AlAlCl
TPl
FREO ADJ
TUNE
I
A7A4
AlAlC5
POWER
A2J3
AlA2Wl
Figure 3-68. Location of PLL Adjustments
4. Disconnect the cable 93 (white/orange) from
A7A4J2
M/N OUT in
the RF Section. Refer to Figure 3-68 for the location of the
A7A4
M/N Output Assembly.
5. Connect the frequency counter BNC input to
A7A4J2
M/N OUT
using a BNC to SMB Snap-on Test Cable. Set the input selector
switch on the frequency counter to
(lo
HZ
-
500 MHZ , and set the
impedance switch to
m.
6. Set the RF Section LINE switch to ON and press @ZZiZj.
Key in (SHIFT)
(RESBWY,
[CENTER FREQUENCY) 6090.000 MHz,
(FREQUENCY SPAN) 0 Hz. The frequency counter indication should
be 197.419355 MHz
fl
count.
7. Connect the DVM to A7A4TPl TUNE test point.
8. Adjust
A7A4AlAlCl
FREQ ADJ tuning slug for a DVM indication
of -35.0
f0.5
Vdc. Slightly loosen the hex locking nut before
adjusting the FREQ ADJ tuning slug, and tighten the nut after the
appropriate voltage is set.
9. Key in (CENTER FREQUENCY) 2100.000 MHz on the RF Section.
The frequency counter indication should be 177.500000 MHz
fl
count, and the DVM indication should be -2.3 f0.5 Vdc.
10. Set the RF Section LINE switch to STANDBY.
11. Disconnect the frequency counter and DVM from the
A7A4
M/N
Output Assembly.
12. Disconnect the cable 92 (white/red) from
A7A4Jl
355-395 MHz
OUT on the
A7A4
M/N
Output Assembly. Remove the
A7A4
M/N
Output Assembly from the RF Section, and install it on an
extender board.
13. Press @ZGX~ on the second spectrum analyzer. Connect the CAL
OUTPUT signal to the RF INPUT on the second spectrum analyzer,
and press
ljjj
8.
Adjustments 3-133
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