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Conv TTL RS485 - Testing
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Last edited by Dimitris Lampridis Mar 25, 2019
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Testing project for the CONV-TTL-RS485 system

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This project contains information and design files for systems designed for testing the CONV-TTL-RS485 boards.


Stress tests

As the CONV-TTL-RS485 is very similar to the CONV-TTL-BLO and the RS-485 output connectors are such that wrong (e.g., blocking) signals can not be plugged into the rear-panel, no further stress testing has been performed on the CONV-TTL-RS485

The CONV-TTL-BLO stress test page is given below as a reference:

  • CONV-TTL-BLO stress tests

Gateware test procedure

  • Download gateware test procedure

Production Test Suite

Production Test Suite (PTS) is the environment designed for running functionality tests on boards at the manufacturing site, right after production. It assures that boards comply with a minimum set of quality rules in terms of soldering, mounting and PCB fabrication process.

The PTS system is usually contained within a rack containing an ELMA crate, a laptop with the PTS software installed on it and all other accessories necessary for running tests.

In the case of the CONV-TTL-RS485, the system needs the RTM (CONV-TTL-RTM-RS485) module together with a couple of tester cards (see below) in order to test the RS-485 capabilities of the cards themselves.

The PTS computer runs some scripts that interact with gateware on the CONV-TTL-RS485 FPGA to test functionality of on-board components.

Front module documentation

Documents such as the user guide and the setup guide for setting up the PTS system inside a 19'' rack can be found here:

  • Front module documentation

Rear-transition module documentation

A dedicated page exists for the RTM PTS documentation:

  • CONV-TTL-RTM-RS485 PTS

PTS hardware

Both the front module and rear transition module PTS systems use a couple of loopback modules which mount on the rear panel. With proper control exerted by gateware on the CONV-TTL-RS485 FPGA, these modules are driven to loop pulses from outputs to inputs so as to test the RS-485 capabilities of the cards.

More details about the tester cards can be found at these links:

  • Download the hardware guide
  • CONV-TTL-RS485 hardware project

PTS gateware

The same gateware running on a CONV-TTL-RS485 front module board is used for both the front module and rear transition module PTS systems. A document describing the gateware can be found below:

  • Download the gateware guide

Theodor-Adrian Stana, Denia Bouhired, March 2018

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  • Conv ttl rs485 v4_0 tests
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    • Front module documentation
    • Gateware guide for the conv ttl rs485 pts
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