TM 11-6625-2781-14&P-2
Section I
Table 1-2. Supplemental Performance Characteristics
These supplemental Performance Characteristics expand the 8553B/8552B Specifications, describe the instrument's
unique features and characteristics, and provide other information useful in applying the instrument.
FREQUENCY CHARACTERISTICS
Frequency Range: For operation of the analyzer
Average Noise Level vs. Input Frequency Curve.
Scan Width:
Preset 0 100 MHz: Inverted marker identifies the
frequency that becomes the center frequency
for SCAN WIDTH PER DIVISION and ZERO
scan modes.
Zero: Analyzer becomes fixed-tuned receiver with
frequency set by FREQUENCY and FINE TUNE
Figure 1-3. Typical Resolution
displayed vs. time on the CRT.
8553B/8552B Spectrum Analyzer resolution using
different IF bandwidths.
Stability:
First local oscillator can be
automatically
stabilized (phase-locked) to internal reference for
scan widths of 20 kHz/div or less. Signal display
shift with stabilization <10 kHz.
Long Term Drift:
(At fixed center frequency, after
1 hr. warmup).
Stabilized: 100 Hz/10 min.
Unstabilized: 5 kHz/min; 20 kHz/10 min.
Figure 1-4. Typical Frequency Response
Temperature Drift:
Stabilized: 200 Hz/C
Unstabilized: 10 kHz/C.
1-5