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PC-Based Counter Timer Test Rig / APD-99 Series 5 Avionics Timing / Panel 72S.7317 · Timer 72S.6527 / Noida · India

HAL · AVIONICS TIMING TEST RIG

PC-Based Counter Timer Test Rig, timed to 32-bit resolution.

A high-precision, fully automated PC-Based Timing Test System (Panel 72S.7317 & Timer 72S.6527) built to evaluate the APD-99 Series 5 aerospace component to Hindustan Aeronautics Limited (HAL) requirements. 16-channel NI 6602 stopwatch timers, DAQ-based voltage/current measurement, and a LabVIEW touchscreen interface run manual, semi-automatic, and fully automatic test sequences with real-time logging and automated report generation.

Request proposal Full specifications

PC-Based Counter Timer Test Rig - Panel 72S.7317 and Timer 72S.6527 rack-mount cabinet with touchscreen and LED indicator panel by Neometrix

Fig · 01 Photograph · Panel 72S.7317 & Timer 72S.6527 rack cabinets with touchscreen console

Engineered and calibrated to:

MIL-STD HAL QUALIFIED NIST-TRACEABLE

Timer Channels

16CH

Time Range

999.99SEC

Timer Resolution

32-BIT

DC Voltage Meter

0–30V, 4½ DGT

AC Current Meter

0–20A, 4½ DGT

Overview

Millisecond timing, aircraft-grade.

The PC-Based Counter Timer Test Rig (Model: Panel 72S.7317 & Timer 72S.6527) is a high-precision, fully automated test bench designed to evaluate the performance of aerospace components, particularly the APD-99 Series 5 used in aircraft systems.

PC-Based Counter Timer Test Rig control cabinet with LED indicator panel, touchscreen monitor and keyboard tray by Neometrix

Fig · 02 Photograph · control panel, PC-based timer, and touchscreen console (open cabinets)

The rig integrates advanced data acquisition hardware, industrial-grade computing, and a touchscreen interface powered by NI LabVIEW software. Capable of operating in manual, semi-automatic, and automatic modes, it performs timing, voltage, and current tests with high accuracy, logs results in real-time, and generates detailed reports. As a Computerized Test Bench for Timers and Real-Time Clock Pulse Test Rig, it also functions as a Frequency Counter Evaluation System and Programmable Timer Testing Platform — built to meet HAL standards, ensuring safety, reliability, and ease of use for mission-critical avionics testing.

The system includes a main control panel (Panel 72S.7317) with digital displays for voltage and current, a 16-channel PC-based stopwatch timer (Timer 72S.6527) that measures multiple events simultaneously with millisecond precision, a rugged industrial computer and touchscreen interface, custom-developed LabVIEW automation and data-logging software, and emergency-stop systems with safety interlocks to protect the operator and equipment.

Manual, semi-automatic, and fully automatic modes give test engineers flexibility to match the complexity of the component under test.

Operating Modes

Three modes, one test flow.

Flexibility for engineers based on the complexity of the component under test, from full manual setup to unattended automatic sequencing.

MODE · 01

Manual

Operator-driven step-by-step control of each timing, voltage, and current test point via the touchscreen interface, suited to first-article and diagnostic testing.

Operator Controlled

MODE · 02

Semi-Automatic

Guided test sequences with operator confirmation at defined checkpoints, balancing throughput with hands-on verification of critical measurements.

Guided Sequencing

MODE · 03

Fully Automatic

LabVIEW-scripted end-to-end execution across all 16 timer channels with real-time data logging and automatic Excel report generation.

Unattended Sequencing

System Architecture

Six subsystems, one test rig.

Electrical, DAQ, computing, and safety subsystems engineered as a single, jointly commissioned test bench.

Sub · 01

Electrical & Power System

27 V DC supply (typical aircraft component power requirement) plus 220 V, 50 Hz single-phase AC supply for rig electronics.

Sub · 02

Measurement & Control

4½-digit digital panel meters: DC voltage 0–30V and AC current 0–20A, matched to the aircraft component power envelope.

Sub · 03

Data Acquisition & Interface

NI 6602 timer cards (16 stopwatch channels, 0.05–999.99s, 32-bit resolution), a 96-channel digital I/O card, and an MIO DAQ card with 16 analog inputs, 8 digital I/O lines, 2 analog outputs, and over-voltage protection.

Sub · 04

Computing System

Industrial rack-mount cabinet with 5 PCI slots, a 15-inch touchscreen monitor for GUI-based operation, and a 1200 dpi / 20 ppm laser printer for automated report generation.

Sub · 05

Power Continuity

Online UPS, 1 KVA with 4 hours backup, keeps timing tests and data logging running through mains interruptions.

Sub · 06

Safety Systems

Emergency stop push-button, interlocked drives, and power-on self-tests protect operator and equipment on every test cycle.

Key Features

Built for mission-critical QA.

From LabVIEW-driven precision measurement to secure, traceable reporting.

APD-99 Series 5 qualification: tests aviation timing components for HAL with manual, semi-automatic, and fully automatic operating modes.
16-channel NI 6602 stopwatch timer: measures 0.05–999.99 seconds at 32-bit resolution with millisecond precision.
MIO DAQ card: 16 analog inputs, 8 digital I/O lines, and 2 analog outputs with built-in over-voltage protection.
Uninterrupted operation: 15-inch touchscreen, 1 KVA online UPS with 4-hour backup, and 1200 dpi laser printer.

Automated reporting: LabVIEW software generates Excel test reports and logs test name, date, time, and values for complete traceability.
Precision panel meters: 4½-digit DC voltage (0–30V) and AC current (0–20A) meters ensure accurate component measurements.
NIST-traceable calibration: in-situ calibration of voltmeters, ammeters, and timers ensures ongoing measurement accuracy.
Secure access: password-based login, session tracking, and LAN/web interface enable remote monitoring capability.

Gallery

The test rig, up close.

Photographs of the Panel 72S.7317 & Timer 72S.6527 rack cabinets, control panel, and touchscreen console.

PC-Based Counter Timer Test Rig control panel and touchscreen console by Neometrix

PC-Based Counter Timer Test Rig rack cabinets with LED indicator panel by Neometrix

PC-Based Counter Timer Test Rig computing cabinet with monitor and laser printer by Neometrix

Fig · 03–05 Photographs · control panel & console (left), LED indicator cabinet (centre), computing cabinet with printer (right)

Specifications

Full technical parameters.

Key parameters for the standard PC-Based Counter Timer Test Rig configuration (Panel 72S.7317 & Timer 72S.6527).

Model	Panel 72S.7317 & Timer 72S.6527
Component Under Test	APD-99 Series 5 aircraft avionics component
Operating Modes	Manual · Semi-automatic · Fully automatic
DC Supply	27V (typical aircraft component power requirement)
AC Supply	220V, 50Hz, single phase
DC Voltage Meter	0–30V, 4½-digit precision
AC Current Meter	0–20A, 4½-digit precision
Timer Card	NI 6602 · 16 stopwatch channels · 0.05–999.99 sec · 32-bit resolution
Digital I/O	96-channel digital I/O card interfacing buttons, switches, relays
MIO DAQ Card	16 analog inputs · 8 digital I/O lines · 2 analog outputs · over-voltage protection
Computing System	Industrial rack-mount cabinet, 5 PCI slots · 15-inch touchscreen monitor
Power Continuity	Online UPS, 1 KVA, 4 hours backup
Report Output	Laser printer, 20 ppm, 1200 dpi · automated Excel report generation
Safety Systems	Emergency stop push-button · interlocked drives · power-on self-tests
Software	Custom application built on NI LabVIEW
Calibration	NIST-traceable, with in-situ calibration of voltmeters, ammeters, and timers
Warranty	12 months from date of commissioning
Service Support	10-year commitment on spares and technical help
Reference Standard	Developed to Hindustan Aeronautics Limited (HAL) requirements

Applications

What it tests.

Built to test electro-mechanical timing components in aircraft before actual flight use.

A · 01Ground start sequences — simulates conditions when an aircraft engine is started on the ground

A · 02Relay & switch verification — tests electrical relays and switches, ensuring they respond within a specific time window

A · 03Backup systems — checks emergency circuits that activate during failures

A · 04Micro-switch & flap valve testing — validates components used in control surfaces like rudders and flaps

A · 05Pre-flight testing & MRO validation — quality assurance before flight release or after maintenance, repair & overhaul

A · 06Aerospace component QA labs — incoming and outgoing inspection of APD-99-class timing components

In Depth

The complete technical read.

Engineering narrative for HAL quality engineers and aerospace QA labs evaluating the rig before commissioning.

1. System overview

The PC-Based Counter Timer Test Rig (Panel 72S.7317 & Timer 72S.6527) is a fully automated, intelligent testing system designed to evaluate the functionality and reliability of aviation components, particularly the APD-99 Series 5 used in aircraft. Developed to meet the stringent requirements of Hindustan Aeronautics Limited (HAL), this test rig is a fusion of modern electronics, user-friendly software, and high-precision measurement tools — functioning as a vital quality assurance tool for HAL by simulating the operating conditions an aviation component would encounter during flight and checking how it responds.

As a Software Controlled Timing Unit and Microcontroller Counter Test Setup, the system includes a main control panel (Panel 72S.7317) with digital displays for voltage and current; a 16-channel PC-based stopwatch timer (Timer 72S.6527) that measures multiple events simultaneously with millisecond precision; a rugged industrial computer and touchscreen interface; custom-developed software based on LabVIEW for automation and data logging; and emergency stop systems and safety interlocks to protect the operator and equipment. It is capable of working in manual, semi-automatic, and fully automatic modes.