HP 8559A Operation And Service Manual page 128

ADJUSTMENTS
5-21. BANDWIDTH FILTER ADJUSTMENTS
REFERENCE:
A9, A1 1, and A13 Schematics
DESCRIPTION:
The crystal and LC bandwidth filter circuits are adjusted for symmetry, center, and peak. The 3-dB bandwidths
are adjusted with Sweep Generator/Bandwidth Control Assembly A9 (paragraph 5-22).
FIGURE 5-5. CRYSTAL AND LC BANDWIDTH FILTER ADJUSTMENTSTESTSETUP
EQUIPMENT:
Adapter, Type N (m) to BNC (f)
Crystal Short (3 required)
Extender Cable Assembly
A crystal short consists of a .O1 pF capacitor (HP Part Number 0160-0161)
and a 90.9 ohm resistor (HP Part Number 0757-0400) connected in series.
Two square terminal connectors (HP Part Number 0362-0265) are used to
connect the crystal short across the test points.
ADJUSTMENTS
D I S P L A Y
SPECTRUM
ANALYZER
EXTENDER
CABLE
ASSEMBLY
OUTPUT
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NOTE
ADAPTER
HP 1250-0780
See Figure 5-6
HP 5060-0303
MODEL 8559A