TB 9-4931-535-35
SECTION I
IDENTIFICATION AND DESCRIPTION
calibration of Spectrum Analyzer, Hewlett-Packard, Model 3585A. The manufacturer's
manual was used as the prime data source in compiling these instructions. The equipment
being calibrated will be referred to as the TI (test instrument) throughout this bulletin.
a. Model Variations. None.
b. Time and Technique. The time required for this calibration is approximately 4
hours, using the dc and low frequency technique.
prescribed by TB 750-25.
b. Adjustments to be reported are designated (R) at the end of the sentence in which
they appear. Report only those adjustments made and designated with (R).
pertain to this calibration are listed in table 1.
Test instrument parameters
Performance specifications
Frequency marker
Range: 20 Hz to 40.1 MHz
Counter accuracy: 0.3 Hz
Readout accuracy: 0.2 % of frequency span resolution
bandwidth setting
Range calibration
Frequency: 150 kHz
Range: -25 to +30 dB
Accuracy: 0.7 dB
Amplitude linearity
Range: 0 to -95 dB
0 to -20 dB: 0.3 dB
Accuracy:
-20 to -50 dB: 0.6 dB
-50 to -80 dB: 1.0 dB
-80 to -95 dB: 2.0 dB
Reference level
Range: +10 to -90 dBm
+10 to -50 dBm: 0.4 dB
Accuracy:
-50 to -70 dBm: 0.7 dB
-70 to -90 dBm: 1.5 dB
Frequency range: 20 Hz to 40.1 MHz
50/75Ω flatness
Flatness: 0.5 dB
Frequency range: 20 Hz to 10 MHz
1 MΩ flatness
Flatness: 0.7 dB
Frequency range: 10 to 40.1 MHz
Flatness: 1.5 dB
