TB 9-4931-535-24
IDENTIFICATION AND DESCRIPTION
1. Test Instrument Identification.
This bulletin provides instructions for the
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.
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.
Table 1. Calibration Description
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
0.3 dB
Accuracy:
0 to -20 dB:
0.6 dB
-20 to -50 dB:
1.0 dB
-50 to -80 dB:
2.0 dB
-80 to -95 dB:
Reference level
Range: +10 to -90 dBm
0.4 dB
Accuracy:
+10 to -50 dBm:
0.7 dB
-50 to -70 dBm:
1.5 dB
-70 to -90 dBm:
Frequency range: 20 Hz to 40.1 MHz
50/75
flatness
0.5 dB
Flatness:
Frequency range: 20 Hz to 10 MHz
1M
flatness
0.7 dB
Flatness:
Frequency range: 10 to 40.1 MHz
1.5 dB
Flatness: