TB 9-4931-534-24
IDENTIFICATION AND DESCRIPTION
1. Test Instrument Identification.
This bulletin provides instructions for the
calibration of Coaxial Mismatches, Terminations and Isolators, 10 MHz to 18 GHz. 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 appendix A.
b. Time and Technique. The time required for this calibration is approximately 4
hours, using the dc and low frequency and/or microwave technique.
2. Forms, Records, and Reports. Forms, records, and reports required for calibration
personnel at all levels are prescribed by TB 750-25.
3. Calibration Description. TI parameters and performance specifications which
pertain to this calibration are listed in appendix A. Any other mismatch, termination, or
isolator within the frequency range prescribed in this procedure may be calibrated with
these instructions provided the manufacturer's specifications are available.
EQUIPMENT REQUIREMENTS
4. Equipment Required. Table 1 identifies the specific equipment to be used in this
calibration procedure. This equipment is issued with Secondary Transfer Calibration
Standards Set, AN/GSM-287 or AN/GSM-440, and Secondary Reference Calibration
Standards Set, NSN 4931-00-621-7878. Alternate items may be used by the calibrating
activity when the equipment listed in table 1 is not available. The items selected must be
verified to perform satisfactorily prior to use and must bear evidence of current calibration.
The equipment must meet or exceed the minimum use specifications listed in table 1.
5. Accessories Required. The accessories required for this calibration are common
usage accessories, issued as indicated in paragraph 4 above, and are not listed in this
calibration procedure.
Table 1. Minimum Specifications of Equipment Required.
Manufacturer and model
Common name
Minimum use specifications
(part number)
POWER SENSOR
Frequency range: 10 MHz to 18 GHz
Agilent, Model E9304A-H18
Accuracy:
N/A
(E9304AH18)
POWER SPLITTER
Frequency range: 10 MHz to 18 GHz
Weinschel, Model 1870A
Insertion loss:
-6 dB -0.2 + 1.5 dB
(7916839)
Output tracking between ports:
10 MHz to 2 GHz: 0.l 5 dB
2 to 8 GHz:
0.2 dB
8 to 18 GHz:
0.25 dB