SECTION I. IDENTIFICATION AND DESCRIPTION

Table 2. Minimum Specifications of Equipment Required.

Calibration Procedure For Variable Rf Signal Sampler, Model 4275-020 Page Navigation
1

TB 9-5985-318-24

SECTION I

IDENTIFICATION AND DESCRIPTION

1. Test Instrument Identification.

This bulletin provides instructions for the

calibration of Variable RF Signal Sampler, Bird Electronics, Model 4275-020. The

manufacturer's manual was 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. None.

b. Time and Technique. The time required for this calibration is approximately 2

hours.

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 table 1.

Table 1. Calibration Description.

Test instrument parameters

Performance specifications

VSWR

Range:

1.1 max

Frequency: 2 to 512 MHz

Range:

1.25 max

Frequency: 512 to 1000 MHz

Insertion Loss

Range:

0.1dB max

Frequency: 2 to 512 MHz

Range:

0.2 dB max

Frequency: 512 to 1000 MHz

Coupling Factor

Variable throughout frequency range.

Range:

45 to 60 dBc at 30 MHz

Range:

35 to 50 dBc at 300 and 1000 MHz

SECTION II

EQUIPMENT REQUIREMENTS

4. Equipment Required. Table 2 identifies the specific equipment to be used in this

calibration procedure. This equipment is issued with Secondary Transfer Calibration

Standards Set, AN/GSM-286; AN/GSM-287; or AN/GSM-440. Alternate items may be used

by the calibrating activity. 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 2. The accuracies listed in table 2

provide a four-to-one ratio between the standard and TI. Where the four-to-one ratio

cannot be met, the actual accuracy of the equipment selected is shown in parentheses.

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. The following peculiar accessories are also required for this

calibration procedure. Termination, Weinschel M1404N and Open/Short, Anritsu 22N50 or

equivalent.

Privacy Statement
Press Release
Contact