ADJUSTMENTS
5-22. POWER CALIBRATION PROCEDURE (CHANGE
8)
MR13
A4R78
(0
LO)
(OFS
3)
A4TP12
A4TP9
Figure
5-22.
Power Calibration Adjustment Locations (CHANGE
8)
PROCEDURE:
NOTE
This procedure assumes that
A3Sl is set to the factory-set position
(Table
5-6).
If the following steps result in A4R13 and R9 being adjusted near
the stops, connect DVM
low to A4TP12 (floating ground) and con-
nect DVM high to
A4TP9. Adjust A4R78 for -2mV
k
0.lmV.
1.
Connect power meter to RF output.
2.
On the 8350AIB select a CW frequency of 1.1
GHz.
3. Set the power to
-2
dBm as indicated on the plug-in display. Adjust "0 LO" (A4R13) for a
measured power of
-
2
dBm.
4.
Set the power to
+
6
dBm as indicated on the plug-in display. Adjust "0
MD
(A4R9) for a
measured power of
+
6
dBm.
5. Set the power to
-
2
dBm and note the power meter reading, then set the power to
+
2
dBm
and note the power meter reading. The deviation from the power levels set should be equal
and opposite. If note, readjust
"0 LO" (A4R13).
CHANGE
8
8-7
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