SECTION I IDENTIFICATION AND DESCRIPTION

TB 9-5855-1890-35

SECTION I

IDENTIFICATION AND DESCRIPTION

1. Test Instrument Identification. This bulletin provides instructions for the

calibration of Thermal Collimator, SM-D-805691 (p/o AN/TAM-3 and AN/TAM-3A) and

Infrared Collimator, SM-D-969722. TM 9-5855-255-14 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. All models must have lights extinguished in bar target mode.

Some models have a disabling switch; on other models the lights have been removed. If

TI does not have a disabling switch and bar target is illuminated, corrective action must

be taken by DS/GS unit.

b. Time and Technique. The time required for this calibration is approximately 4

hours, using the physical 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

Temperature: 4.5 C (ambient to heater)

Temperature differential

Deviation: 0.45 oC

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. Alternate items may be used by the calibrating activity

when the equipment listed in table 2 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 2. The accuracies listed in table 2 provide a four-to-one ratio between the

standard and TI.