1. SCOPE

This document describes the functional requirements of the INTEGRATION TEST FACILITY FOR TRANSMITTER AND RECEIVER OF INTEGRATED COMMUNICATION SYSTEM (INCOM 1210A / 1215A / 1210AL) -TJ640M together with Physical specifications.

2. DESCRIPTION

Test jig TJ-640M is the system test jig for INCOM 1210A, 1210AL and 1215A in conjunction with other standard test equipment. This is useful for testing controllers also. It can be used for testing conventional mode of INCOM. In the conventional mode of operation TJ-640M generates no RF signal but communicates with unit under test through MIL-BUS-1553B using 1553 card. The driver software required for 1553 card is resident in the Personal Computer (PC).

TJ640M has been designed for testing, tuning and fault diagnosis of INCOM set. It provides power supply (+28V DC) to the set and to bring out the various signals from the set for monitoring during system tuning. It also brings out the system output and provides facility to connect input signals required for measurement purpose.

The Bulkhead connector PL1 available in the INCOM set is connected to the Bulkhead connector present in the front panel of the test jig by INCOM interconnection loom. Test points are available in the front panel of the test jig for monitoring different signals of INCOM Transreceiver unit.

3.TECHNICAL SPECIFICATIONS 3.1 .ELECTRICAL SPECIFICATIONS:

Power Requirement: 230V ± 10 %, 50Hz, and Single phase, AC Power Consumption (Only Test Jig): <1.0A, on 230V, Single Phase Power Consumption (with system) In Rx mode - NMT. 4.0A on 28V DC Input from 230V to the Jig is < 2.0A In Tx mode - NMT. 12.0A on 28V DC Input from 230V to the Jig is < 3.0A

3.1.1. TEST PANEL

On the test panel the supply voltages and the important signals generated inside the INCOM are bought out for diagnostic purpose. Mike amplifier PCB, Timer PCB is located inside the test panel unit.

(a) Mike Amplifier PCB: This PCB is located internally in the system Test jig inside the test Panel. Audio signal from mike i.e., 3mV RMS input at 1 KHz is amplified to lOOmV to 150mV across 600 Q load and is given to INCOM set when Audio BAL/UNBAL switch is in BAL position. This Mike Amplifier interfaces the head set output signal to INCOM 1215A Balanced Mike input. This is required for communication check of INCOM 1215A. Apart from this, Mike Amplifier PCB generates +5V linearly regulated supply voltage to use it as a Dimmer supply voltage for INCOM Controller front panel illumination checks for both UUT and Golden Set.

(b)Timer Circuit PCB: This PCB is required for INCOM 1210AL only. This PCB sets the continuous RUN mode for INCOM set AUTO and MANUAL. Timer circuit (uses 28V supply) provides the square wave with one minute LOW and five minutes HIGH conditions. This square wave is applied to the TX/RX line of INCOM system in the AUTO mode. AUTO mode is used when system has to be kept for continuous RUN IN operation for 8 Hrs. In AUTO mode INCOM system goes to Tx mode for 1 min and Rx mode for 5mins. During AUTO mode TX/RX switch is ineffective

3.1.2. INDUSTRIAL PC

Industrial PC with VGA color monitor, Standard Keyboard, mouse, PCI-slot and 2 GB RAM and Operating System WIN XP pre-loaded.

The PCI-1553 card is installed in the PC to interface with transceiver through MIL-STD 1553 Bus. The PC is configured as Bus controller/Remote Terminal.

3.1.3. Power Supply Unit: Power Supply Unit provides system

supply 28V DC/30A. The output of the power supply is internally wired to both Golden Set and unit under test. The transceiver in receive condition draws about 3A and during te transmit condition it takes around 10A.

3.2. MECHANICAL SPECIFICATIONS:

Width (W) = 545mm±10mm

Depth (D) = 630mm ± 10mm

Height (H) = 1396 mm + castors height 95 mm± 50mm

Weight = 162 Kg±10Kg

CLAIM:

We claim that Integration test facility for Transmitter and receiver of integrated communication system (INGOM 1210A / 1215A / 1210AL), Test jig TJ-640M is the system test jig in conjunction with other standard test equipment.

• TJ-640M is system test jig to test functionality of INCOM.

• This test jig useful to test INCOM controllers also

• This can be used for testing conventional mode of INCOM.

• TJ640M has been designed for testing, tuning and fault diagnosis of INCOM set. It provides power supply (+28V DC) to the set and to bring out the various signals from the set for monitoring during system tuning. It also brings out the system output and provides facility to connect input signals required for measurement purpose.