A2L9 Adjustment Location - HP EPM E4418A Service Manual

3. Turn the power reference on by pressing
Zero
,
Power Ref Off On
Cal
Zero
,
Cal
Cal
HP EPM-442A.
4. Observe the reading on the frequency counter. If it is
50.0 ± 0.5 MHz, no adjustment of the power reference oscillator
frequency is necessary. If it is not within these limits, adjust the
power reference oscillator frequency as described in step 5 and
step 6.
5. Remove the power meter cover.
6. Adjust A2L9 to obtain a 50.0 ± 0.5 MHz indication on the
frequency counter. Refer to Figure 3-2 for the position of A2L9.
Figure 3-2: A2L9 Adjustment Location
HP EPM-441A/442A Service Guide
Power Reference Oscillator Frequency Adjustment
on the HP EPM-441A.
, ,
More Power Ref Off On
A2R90
BT1
A2 Assembly
J12
A2J13
Front Panel
Adjustments
on the
A2L9
3-5