Testing project for the CONV-TTL-RS485 system
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:
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:
Rear-transition module documentation
The PTS system for the RTM is somewhat different from the front-module test system, in that it does not need to be placed inside a 19'' rack. The CONV-TTL-RTM-RS485 can be placed within any ELMA crate and a test system made for this crate.
The HDL for the RTM PTS is the same as for the front module PTS (see below).
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 in the CONV-TTL-RS485 PTS hardware guide:
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:
Theodor-Adrian Stana, Jan. 2015