Agilent Technologies 8590 Series Service Manual page 56

Making Adjustments
5. Crystal and LC Bandwidth Filter
Final BW Amplitude Check
44.Run the "CAL FREQ Adjustment Routine" and the "CAL AMPTD
Adjustment Routine."
45.Remember to press
to store data in nonvolatile memory.
46.Press the following analyzer keys to verify that the bandwidth
amplitude corrections are within specifications.
CAL, More 1 of 4
SERVICE DIAG
DISPLAY CAL DATA
47.Refer to the BW-AMP column of the analyzer display to locate the
XTAL and LC bandwidth amplitude-correction numbers of the
analyzer. All LC and XTAL bandwidth readings should be between
−0.8 dB to +0.5 dB.
XTAL and LC bandwidth amplitude-correction numbers that will be
displayed on the analyzer. Perform the following steps that apply to
your analyzer.
• If the difference between the bandwidth amplitude-correction
numbers of the 30 kHz XTAL and 3 MHz LC is greater than
0.8 dB, pad A11R8 or A13R8 and repeat the Final BW Amplitude
Check. Refer to the Component-Level Information Package for
the location of A11R8 and A13R8.
• If the 30 kHz XTAL bandwidth amplitude correction is greater
than the 3 MHz LC bandwidth correction, increase the value of
A11R8 or A13R8.
• If the 3 MHz LC bandwidth amplitude correction is greater than
the 30 kHz XTAL bandwidth correction, decrease the value of
A11R8 or A13R8.
• If just the 100 kHz LC amplitude is out of range, repeat
step 38 and step 44
• If the 1 kHz XTAL amplitude is out of the above range, repeat
step 44 to step
56
after the completion of the routines
CAL STORE
,
More 2 of 4
Table 2-1 describes and shows an example of the
to step 47.
46.
step 23 to
Chapter 2