CASS ACRONYM

EMI

(Electromagnetic Interface) Filter

ULAS

(UUT Load Assembly) Chassis

The ADTS consists of two major components

- Electronics Rack Assembly - Pump Unit Assembly

3 most in depth tests in order

1. IO testing 2. Operator initiated foreground SMAT 3. BIT

On the left side of Rack 1 accepts and distributes 50/60 Hz and 400 Hz facility power, as well as Ethernet communication to test set components.

AC Distribution Chassis (1NAA2)

ACPS

AC Power Supply

Is a portable test set that provides regulated pneumatic pressure and vacuum outputs simulating altitude and air speed. Used to test altimeters, air speed indicators, and other _________ systems on all Navy aircraft.

ADTS (Air Data Test Set)

In Rack 3 contains the components necessary to provide power and cooling for the ________ or CPCI instruments in the test set. The _______ includes 20 slots that can hold a PXI controller and 19 PXI or CPCI instruments.

AGCS (Automated Gyro Gimbal Control System) Chassis (3A5)

ADTS

Air Data Test Set

In Rack 3 monitors the ________ sensor switches in the UUT and starts a power down if out of tolerance. The system monitors _______ pressure, and temperature and has sensors and controls that make sure that adequate ______ is supplied to the UUT. The air inlet to the system accepts external cooled air if necessary.

Air Flow Monitor (AFM) (3A1)

AGCS

Automated Gyro Gimbal Control System

_______ SMAT is scheduled to run automatically and does not require operator input.

Background

There are two modes of SMAT testing

Background and foreground

Supplies power interruption ride-through capability when abrupt test set power loss occurs.

Backup Power Test Set Group

HP 10 must do everything that comes ________ it

Before

in Rack 3 contains the components necessary to provide power and cooling for the PXI or CPCI instruments in the test set.

COMM Chassis

_________ is necessary to make sure that instrument functions are accurate and within tolerance. The _________ has a built-in verification function that checks if instruments need to be corrected through ________. _________ must be performed in accordance with preventative maintenance schedule or whenever a component is replaced.

Calibration OTPS.

Includes an interface device, cable assemblies, shorting plugs, and other testing accessories. When a CAL test program set is running, the STORM interface alerts the operator when the calibration equipment must be installed or removed from the test set.

Calibration Support Equipment

CHA

Collimeter Housing Assembly

COTS

Commercial Off The Shelf

Holds the connectors to the test the system communications and the _________ capability.

Communication/Multi Purpose Stroke/Raster Display Panel.

CPCI

Compact Peripheral Component Interconnect

In Rack 2 contains the power supply assets per EIA (Electronics Industry Association)/ECA(Electronic Component Assemblies)- 310 standard and is used for automated test equipment and production environments.

DCPS Chassis (2A28)

- PCU (1A26) - 64 Pin Mini Coax Receiver Module (2A11N6J3) - 210 Pin Receiver Module (2A11NJ3( - Environmental Monitor (2N7A40) - Ethernet Switch (3A11)

DCPS Chassis (2A28) interfaces with:

In Rack 3 converts data between a 10 Mbps (Megabits per second) Ethernet twisted pair and a 50-ohm coax cable.

Digital Media Converter (3A21A2)

DTI

Digital Test Instrument

DTU

Digital Test Unit

DMM

Digital multimeter

Holds the connectors for the WFRD

Digitizer Panel

on the left side of Rack 1 is a passive component that keeps ___________ away fr the system and prevents the component from being degraded. The ______ interfaces with the facility power supply and the AC Distribution Chassis.

EMI (Electromagnetic Interference) Filter (1NAA1)

A three-rack test set used to test specific ____ UUTs. Has three DI-50 channel cards, a PXIe chassis, an AGCS Interface Panel, and the EO3 console, that contains instruments for ______ testing.

EO Configuration

Consists of a Chassis Assembly, CHA, IPA, IEA, and VPM. An asset controller sends command and control signals over the backplane to the ______ to control _____ functions. The _____ provides necessary _____ stimuli and measurements for a TPS capability for a UUT.

EO3

EO

Electro Optical

In Rack 3 contains the power supply assets as per EIA/ECA-310 standard and is used for automated test equipment and production environments.

Electro-Optical (EO) Power Chassis (3A30)

EO3

Electro-Optics Third Generation

In Rack 3 supplies ________ access connectivity and power over ______ capabilities for continuity and fast transition to 10-gigabit ______. The ______ also supplies 24 or 48 ports of gigabit ______ desktop connectivity with a Cisco FlexStack stacking module with 40 gigabits per second of throughout.

Ethernet Switch (3A11)

______ SMAT testing includes instrument self-tests to determine whether the individual instruments in the test set are operational.

Foreground

FLIR

Forward Looking Infared

in Rack 2 supplies programmable stimulus, bias power, and programmable loads for the UUT. It has 19 module slot positions that contain the instruments and card assemblies and has an electrical backplane connection for the assets.

GPI (General Purpose Interface)

GPI

General Purpose Interface

GFE

Government Furnished Equipment

A six-rack test set used to test specific ___ UUTs. The ___ tests HP RF, high voltage DC and AC/DC avionics units. Rack 6 of the test set is an LCU used to keep ___ components within safe operating temperatures. Must have RF.

HP Configuration

In Rack 2 has a Power Supply Assembly and a Fan Assembly installed on the front of the mainframe for ease of maintenance and to decrease MTTR (Mean Time To Repair). The _______ backplane bus panel supplies power and control to the 13 ___ slots.

HP VXI Chassis (2A1)

- Master Station Computer (1A12) - PCU (1A26) - GPI Chassis (2A26) - GPI Hybrid Switch (2A11A8, 2A11A9) - Digital Pass-Through - Environmental Monitor (2N7A40) - Ethernet Switch (3A11) - 1553 Coupling CCA (Circuit Card Assembly) (3NABA1)

HP VXI Chassis interfaces with:

HPDTS

High Power Data Test Set

Is a four-rack test set used to test a hybrid unit under test. Has three AI-710 modules for mixed-signal testing and six DI-50 channel cards. Rack 4 of the test set is an empty base rack supplied for use if the test set is upgraded to an RF or HP configuration.

Hybrid Configuration

Designed for ancillary use with eCASS, aboard ship as well as land based repair facilities, to compare _______ output information from a known good IRS to that of an unknown UUT device. Measures the difference in altitude, velocity and position information if the two devices and verified the acceptability of the UUT.

IDTS (Inertial Device Test Set)

IDTS

Inertial Device Test Set

IRS

Inertial Reference System

IPA

Integrated Photonics Asset

IETM

Interactive Electronic Technical Manual

ID

Interface Device

IMOM

Intermediate Maintenance Operations Management

In Rack 1 changes DC to AC voltage. It can operate as part of a remotely controlled unit. The ___________ converts 270 v DC power from the PCU (1A26) into AC power to be used by the ULAS Chassis (1A6) and the components connected to the Utility Outlets.

Inverter Assembly (1A19)

In Rack 3 changes DC to AC voltage necessary for use by the HPDT (High Power Device Test) assets. The ________ supplies 3 KVA of pure sine wave AC power to the components in the eCASS.

Inverter Assembly (3A34)

LCU

Liquid Cooling Unit

In Rack 3 is programmable and has standard electrical parameters to calibrate the test set.

Low Frequency Calibrator (LFC) (3A23)

In Rack 2 has an enclosure with a backplane assembly and a power/fan supply assembly. The _______ has the single tray power/fan supply assembly installed from the front below the mainframe slots assembly for ease of maintenance and to decrease MTTR.

MPVXI Chassis (2A20)

In Rack 1 controls the main operating system for the test set and supplies the user interface to run test program sets.

Master Station Computer (1A12)

MTPSI

Master Test Program Set Index

MPSRD

Multi-Purpose Stroke Raster

In Rack 3 supplies scan conversion and mixing for any video input signal. The ________ changes any input format to any output format up to 2000 x 2000 pixels.

Multi-Purpose Stroke Raster Display (MPSRD) Converter (3A18)

OTPI

Operational Test Program Information

OTPS

Operational Test Program Set

On the front of Rack 1 holds the HMI Display, system indicators, and the lockable power switch. Interfaces with TRU (1A30), and AC Distribution Chassis (1NAA2).

Operator Control Panel

PXI

PCI eXtension instrumentation

In Rack 1 supplies a stable and accurate 10 MHz sine wave frequency reference with multiple output signals and pulsed DC.

PRF (1A1)

- Master Station Computer (1A12) - PCU (1A26) - DTI Controller Card (2A1A1) - 64 Pin Mini Coax Receiver Module (2A11N6J2) - Analog Controller Card (2A20A1) - AGCS (3A5A14) - RS-485 Trigger Module (3A12A14) - Digitizer Panel - RF Chassis Controller (4A2A1)

PRF interfaces with:

PCU

Power Control Unit

PFR

Precision Frequency Reference

Holds the connectors for the DMM

Probe Panel

Is a four-rack test set used to test analog, digital, and ____ parameters of a UUT. Contains a group of instruments in Rack 4 used to measure and distribute ___ signals.

RF Configuration

In Rack 4 is used to hold the _______ components is controlled via Ethernet and supplies switching and measurement capabilities to the circuit card assemblies in the RF chassis. The ______ also relays input and output signals from the IFIU.

RFIU (Radio Frequency Interface Unit)

In Rack 4 consists of switches, RF cables, and switch controller components to route multiple RF signal input connection ports to multiple RF signal output connection ports.

RFIU Measurement Switch (4A10A2)

In Rack 4 is used to route RF signals from test station instruments to other instruments. The _______ has four independent input ports and three output ports.

RFIU Stimulus Switch (4A10A1)

RF

Radio Frequency

The eCASS uses SMAT and SMATI/O (input/output) test program sets to examine the condition of test components and identify failures.

SMAT OTPS

_________ testing detects instrument failures related to their paths to the GPI (2A11). A set of external hardware and cabling is necessary to run ______ tests successfully.

SMATI/O

SMAT

Self Maintenance And Testing

STORM

Standard Test Operations and Runtime Manager

A multifunctional mobile device used for mounting test equipment, tools and WRAs during maintenance and testing of WRAs in conjunction with eCASS ATE.

Test Equipment Dolly

TPS

Test Program Set

- PFR (1A1) - Master Station Computer (1A12) - PCU (1A26) - TRU (1A30) - EMI Filter (1NAA1) - Operator Control Panel - Ethernet Switch (3A11)

The AC Distribution Chassis (1NAA2) interfaces with the components that follow:

- PCU (1A26) - ULAS/AC Power Panel - WIU (2A28A12) - Ethernet Switch (3A11)

The ACPS Chassis (1A2) interfaces with the components that follow:

- ULAS Chassis (1A6) - PCU (1A26) - Utility Outlets

The Inverter Assembly (1A19) interfaces with the components that follow:

- Ethernet Switch (1NAA2A6) - Display (NAA1) - PFR (1A1) - PCU (1A26) - Analog Controller Card (2A20A1)

The Master Station Computer (1A12) interfaces with the components that follow:

- RFPM Chassis (4A1) - RFIU Stimulus Switching Group (4A10A1) - RFIU Power Supply (4A10A3) - RFSA Down Converter (4A15A1, 4A15A2) - IFIU (4A20)

The RFIU Measurement Switch (4A10A2) interfaces with the components that follow:

- RF Synthesizer (4A2A2, 4A2A4, 4A2A6) - RF Reference Distribution (4A2A10) - RFIU Measurement Switch (4A10A2) - RFIU Power Supply (4A10A3)

The RFIU Stimulus Switching Group interfaces with the following components:

- Inverter Assembly (1A19) - ULAS/AC Power Panel - WIU Bracket Assembly (1A2A12) - Ethernet Switch (3A11)

The ULAS Chassis (1A6) interfaces with the components that follow:

TRU

Transformer Rectifier Unit

In Rack 1 supplies an interface for receiving AC power and converting it to 270 VDC to be used by test set components. An input power transformer allows the ________ to receive any of the three-phase AC input voltages that follow through multi-pin tabs on the front assembly: 200 VAC, 380 VAC, 440 VAC, 480 VAC

Transformer Rectifier Unit (TRU) (1A30)

The ___________ can be programmed to operate with a constant current load or a constant resistance load. When programmed to operate in the constant current mode, the _______ draws a constant current between 0-20 amps from the UUT regardless of the UUT voltage output.

ULAS Chassis (1A6)

Holds the connectors associated with the ULAS Chassis (1A6), PFR (1A1), and ACPS chassis (1A2)

ULAS/AC Power Panel

in rack 1 supplies the capability to simulate a dynamic electrical load on power supplies, generators, servo systems, and similar electrical power source UUTs. Has a 17-slot card cage that contains eight dual-slot DC Load Modules and one Controller Module. The chassis backplane supplies power and controls the installed modules.

ULAS/AC Power Panel

UUT

Unit Under Test

In Rack 3 tests a broad range of video displays including composite or component television video signals as well as computer video display terminals.

VPG (Video Pattern Generator) (3A21A1)

In Rack 3 holds the ______ and the Digital Media Converter.

VPG Tray Assembly (3A21)

WFRD

Waveform Digitizer

WRAs

Weapons Replaceable Assemblies

Is an automated test set used to find, troubleshoot, and repair faults that may occur in avionics components. The test set measures and makes an analysis of the response of the UUT and isolates the errors and out-of-tolerance conditions. Used in conjunction with a TPS, the eCASS supplies physical and electrical interfaces between the UUT and the system components, which include hardware and software interfaces for stimulus, measurement, analysis, communication, control, calibration, and self-maintenance. The test set components can have custom designed, GFE, or COTS equipment. 4 configurations.

eCASS General Purpose and Characteristics