TB 9-6625-2284-50
IDENTIFICATION AND DESCRIPTION
1. Test Instrument Identification. This bulletin
provides instructions for the
calibration of transfer Night Vision Device (NVD) Detector Standard (APN 13335470).
DA Form 3758 and engineering technique 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. None
b. Time and Technique. The time required for this calibration is approximately 1
hour, using the dc and low and 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. 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.
Test instrument parameters
Performance specifications
4.73 x 107 V/(W cm -2 sr -1 ) 10%
Radiance responsivity at 820 nm
1.51 x 107 V/(W sr -1 ) 11%
Intensity responsivity at 810 nm
NTE 0.02 mV
Noise
EQUIPMENT REQUIREMENTS
4. Equipment
Required. Table 2 identifies the
specific equipment to be
used in this
calibration procedure. This equipment is issued with Secondary Reference Calibration
Standards Set, NSN 4931-00-621-7878. 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 standard and TI. See footnote at table 2. Where the four-to-
one ratio cannot be met, the four-to-one accuracy will be listed, and the actual accuracy
of the equipment selected is shown in parenthesis.
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
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