HP 83522A Service Notes page 174

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 M D (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