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Operating Information
2715 Spectrum Analyzer Service Manual
2-3
Instrument Construction
Modular construction provides ready access to the major circuits. Each circuit
board containing RF sensitive circuits is mounted in a casting, with feed through
connectors through the compartment walls. Most boards and assemblies plug
onto a common interconnect board. Most adjustments and test points are
accessible while the instrument is operational and without need of a circuit board
extender.
Circuit board extenders are available in an optional Service Kit (see Maintenance
section under Fixtures and Tools for Maintenance on page 6--3). Most of the
modules or boards can be removed without affecting the structural or functional
integrity of other modules. The extender board allows any of the six circuit board
assemblies in the card cage to be positioned for service or adjustment. The
Sweep and Power Supply circuit boards are accessed by removing the instru-
ment’s cabinet (and the Variable Resolution assembly in the case of the Power
Supply).
All other circuit boards are accessible by removing the instrument’s cabinet and
the shielding associated with each assembly .
NOTE. Disassembly of some modules may require special tools and procedures.
These procedures and a list of tools are located in the Maintenance section.
Most RF circuits are isolated in shielded compartments to obtain and maintain
the frequency stability, sensitivity, and EMI characteristics. While shielding
helps ensure a spurious free response, the closeness of the circuits reduces losses
and interactions with other functions. Interconnections between compartments
are made by feed through terminals rather than cables. If the compartments are
opened, be sure that the shields are properly reinstalled before operating.
Installation and Preparation for Use
Refer to Section 2: Getting Started of the 2715 Spectrum Analyzer User Manual
for unpacking, storage, repackaging for shipment, and installation information.
Power Cord
The power cord that is supplied with the instrument depends on the available
power source (see Section 1: Specifications). Power cord options are described in
Section F: Options.