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TM 55-4920-412-13&P
CHAPTER 1
INTRODUCTION
Section I. GENERAL
1-1. Scope.
This manual describes the Vertical Instrument
Display System Bench Test Set (Figure 1-1) hereinafter
referred to as the test set, and provides instructions for
operation, aviation unit, and intermediate maintenance.
It includes instructions for replacement of parts available
to the operators and aviation unit, and intermediate
repairmen and a repair parts and special tools list
(RPSTL).
1-2. Maintenance Forms, Records, and Reports.
Department of the Army forms and procedures used
for equipment maintenance will be those prescribed by
DA PAM 738-751.
1-3. Destruction of Army Materiel to Prevent Enemy
Use.
Refer to TM 750-244-2, Procedures for Destruction
of Electronic Materiel to Prevent Enemy Use.
1-4. Preparation for Storage or Shipment.
For administrative storage, refer to TM 750-90-1 and
Chapter 4.
1-5. Quality Assurance/Quality Control (QA/QC).
Refer to FM 55-411 for information about quality
assurance and quality control.
1-6. Equipment Improvement Recommendations
(EIR).
EIR can and must be submitted by anyone Who is
aware of an unsatisfactory condition with the equipment
design or use. It is not necessary to show a new design
or list a better way to do a procedure; just simply tell why
the design is unfavorable or why a procedure is difficult.
EIR may be submitted on SF 368 (Quality Deficiency
Report). Mail directly to Commander, US Army Aviation
and
Troop
Command,
ATTNAMSAT-I-MDO,
4300
Goodfellow Blvd., S Louis, MO 63120-1798. A reply will
be furnished to you.
Section II. EQUIPMENT DESCRIPTION AND DATA
1-7. Purpose and Use.
The test set provides the interconnecting and power
control which allows maintenance personnel to service
individually the SDC (Signal Data Converter), CDU
(Central Display Unit), and PDU (Pilot Display Unit). In
addition to controlling power, the test set simulates
specific inputs required for calibration and testing of the
VIDS units.
1-8. Description.
The test set consists of two parts: Simulator P/N
244476862-002 and Unit Tester P/N 245-601115-000.
The two parts of the test set are housed in a fiber glass,
lightweight case. The case consists of two hinged
sections that may be separated Each half of the case
has storage space for test and power cables.
1-9. Equipment Data.
Refer to Table 1-1 for equipment data.
Table 1-1. Equipment Data
AC voltage input
115 vac, single-phase 400 ± 20 Hz
DC voltage input
20 ± 0.5 vdc
Outputs
All necessary ac and dc power and
control voltages and simulated
signals for the parameter to be
tested.
Dimensions
Length
39 cm (15.38 inches)
Width
37.8 cm (14.88 inches)
Height
34 3 cm (13.5 inches)
Weight
33.75 kg (75 Ibs)
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