TB 9-6625-1914-35
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CALIBRATION PROCESS FOR SPECTRUM
ANALYZER LF PLUG-IN, HEWLETT-
PACKARD, MODEL 8556( ) (Continued)
Spurious responses ............................................
Final procedure ..................................................
IDENTIFICATION AND DESCRIPTION
1. Test Instrument
Identification. This bulletin provides instructions for the
calibration
of Spectrum Analyzer IF, LF, and RF Plug-in Units, Hewlett-Packard, Models 8552( ), 8553( ), 8554(
), 8555( ), and 8556( ). The manufacturers' manuals were used as the prime data sources in
compiling these instructions. The equipment being calibrated will be referred to as the TI
(test instrument) throughout this bulletin.
a. Model Variations. Variations among models are described in text, tables, and
figures.
b. Time and Technique. The time
required for this
calibration is
approximately 2
hours for each plug-in, using the dc and low frequency technique for Models 8552( ), 8553( ),
and 8556( ); and the dc and low frequency and microwave technique for Models 8554( ), and
8555( ).
2. Forms,
Records, and
Reports.
a. Forms, records, and
reports required for calibration personnel at all
levels are
prescribed by TB 750-25.
b. Adjustments to be reported are designated (R) at the end of the sentence in which
they appear. When adjustments are in tables, the (R) follows the designated adjustment.
Report only those adjustments made and designated with (R).
3. Calibration
Description. TI
parameters and
performance specifications which
pertain to this calibration are listed in table 1.
Test instrument parameters
Performance specifications
Model 8552( )
Amplitude stability vs IF
5.8% on linear display
(Model 8552A)
5.8% at .1 to 300 kHz
(Model 8552B)
12% at .03 to 300 kHz
(Model 8552B)
19% at .01 to 300 kHz
(Model 8552B)
Amplitude display accuracy
0.25 dB/dB over entire 70 dB display range with 1.5 dB
total cumulative error
20% at 3 dB points (except at 10 kHz, 5%)