TM 11-6625-2781-14&P-2
Section V
SECTION V
ADJUSTMENTS
Cement Model No. 5003 (HP 8730-0013).It may be
5-1. INTRODUCTION
necessary to cut away part of the plastic on the tuning
blade end to use the tool on all the adjustments. In
5-2. This section describes adjustments required to
situations not requiring nonmetallic tuning tools, an
return the analyzer RF section to peak operating
ordinary small screwdriver or other suitable tool is
condition when repairs are required. Included in this
sufficient. No matter what tool is used, never try to
section are test setups, checks and adjustment
force any adjustment control in the analyzer. This is
procedures. A test card for recording data is included at
especially critical when tuning variable slug-tuned
the back of this section.
Adjustment location
inductors, and variable capacitors.
photographs are contained in foldouts in Section VIII of
this manual.
5-10. HP 11592A Service Kit. The HP 11592A Service
Kit is an accessory item available from Hewlett-Packard
5-3.
The adjustment procedures are arranged in
for use in maintaining both the RF and IF sections of the
numerical order. For best results, this order should be
spectrum analyzer. No attempt to adjust the analyzer
followed. Record data, taken during adjustments, in the
should be made unless the user has the service kit.
spaces provided or in the data test card at the end of
this section. Comparison of initial data with data taken
during periodic adjustments assists in preventive
description of the contents of the service kit.
maintenance and troubleshooting.
5-4. EQUIPMENT REQUIRED
5-12. Extender Cable Installation. Push the front
panel latch in the direction indicated by the arrow until
the latch disengages and pops out from the panel. Pull
and test accessories required in the adjustment
the plug-ins out of the instrument. Locate the black
procedures. In addition, the table contains the required
press-to-release button on the left side of the RF
minimum specifications and a suggested manufacturers
section. Press the button, and firmly pull the two
model number.
sections apart. When the two sections separate at the
front panel, raise the upper section until it is above the
5-6.
In addition to the test equipment and test
lower section by two or three inches at the front panel.
accessories in Table 5-1, a display section and an IF
Disengage the metal tab-slot connection at the rear and
section are required. When the RF and IF sections are
separate the sections. Remove top and bottom covers
removed from the display section, install Dummy Load
from the RF section.
Assembly A14 on rear of RF section. Perform the
display section and IF section adjustments prior to
5-13. Place the plate end of the HP 11592-60015
performing the RF section adjustments.
Extender Cable Assembly in the display section and
press firmly into place so that the plugs make contact.
5-7. Pozidriv Screwdrivers. Many screws in the
The plate and plugs cannot be installed upside down as
instrument appear to be Phillips, but are not. The
the plate has two holes corresponding to the two guide
equipment required table gives the name and number of
rods in the mainframe.
the Pozidriv screwdrivers designed to fit these screws.
To avoid damage to the screw slots, the Pozidriv
5-14. Connect the upper cable plug to the RF section
screwdrivers should be used.
and the lower cable plug to the IF section. The plugs are
keyed so that they will go on correctly and will not make
5-8. Slug Tuning Tool. The Gowanda Model PC9668
contact upside down. Connect HP 11592-60016
(Hp 8710-1010) tuning tool is designed for tuning the
Interconnection Cable Assembly between the RF and IF
brass slugs in the ferrite inductors used in both the IF
and RF sections. No other tool should be used for this
purpose.
5-9. Blade Tuning Tools . For adjustments requiring a
nonmetallic metal-blade tuning tool, use the General
5-1
