Node 21 100
kH2
(100
kH2
reference frequency)
Perform step
Al2
and then press
(EJJ
~~~~~~~:~~~.~~
L21)
Lxl)
.._.............._..................
.:
.._
~~~~~.~~~~~~
IRE%.
This node counts the
Al2
100
kHz
reference
-
.._......_..........................................
I
i:....
i.......:...
.<<:<~~.u
;.:.
signal that is used on
Al3
(the fractional-N analog assembly) as a reference
frequency for the phase detector.
Node 22
Al2
Gnd 1 (ground)
Node 23
VCO Tune
(Al2
VC0
tuning voltage)
The trace should show a voltage step as shown in
Figure
10-16. At normal
operation, the left
half
trace should be 0
flOO0
mV
and the right
half
trace
should be 100 to 200
mV
higher (that is, one to two divisions). If the trace does
not appear as shown in Figure 10-16, refer to the “High/Low Band Transition
Adjustment” in the “Adjustments and Correction Constants” chapter.
Service Key Menus and Error Messages
1041
To Next Page
Loading...
