A Functional Test System does more than Functional Test. A System should also
do Software Configuration and Calibration/Adjustment of a complete product (a
"closed box" or "unit"). They're the next level up from PC Board test.

Software configuration is usually straightforward, but if the unit has many external
connections, each connection might need functional test, and calibration or adjustment
before the software is configured.

Connecting 24 ethernet ports by hand takes an average of 50 seconds, disconnect
might be done in 20, but if specific connections need to be made, the time increases.

The Drawer handles these problems simultaneously, and in only seconds.  Moving
one lever connects and disconnects the same connection pattern every time.
These two pictures show a Drawer
configured to make power, console, Fiber
Channel and one ethernet connections to a
unit.

The connector plate shown is Lexan (it
shows and works well). G-10 is standard.

Swapping the connector plate allows
one Drawer to handle many different
units
The 3-picture sequence below shows the same Drawer with a new connector plate.  This
connector plate is for a 24-port (3-2x4 ports) ethernet switch.

The ethernet cables are not shown, for clarity; they plug in to the low-insertion fingerboards.

This allows a custom connection map to be implemented at the connector plate, and still
retain the speed and ease of The Drawer's mass-connect / disconnect design.
There are times when both PC Board probing for functional test and debugging is
needed, yet the higher-level functions of Software Configuration and Calibration and
Adjustment are needed.

Perhaps, after new software is downloaded, an on-board A/D needs calibration, or an
on-board amplifier needs adjustment.

For this sort of need,
The Mousetrap Functional Test System is a good solution.
Functional test, functional test systems, functional test solutions, system integration, factory automation,
test fixtures, test fixturing, manufacturing test, production test, boundary scan, fixtures, fixturing


Mousetrap      Unit Testing
The Drawer

Boundary Scan
See Below
The Mousetrap
Functional Test System for PC Boards
Functional Test System for Assembled Product
The figure above shows a Drawer Functional Test System / Calibration & Adjustment
/
Debug & Repair Workstation.  It also allows easy Software Configuration of the unit.

Deploying this sort of Repair workstation to the field is easy.  Since connection times is
reduced, and connections are made reliably and repeatedly, more time is spent doing
repair, than doing a setup to do repair, or worrying if the setup is correct.

Note that the Drawer can be located in a
Thermal chamber, or an EMI/RFI chamber
simply by making the cables slightly long (about 1 meter should be enough)

Placing the entire system on
2 carts allows the system to be moved from a lab to a
chamber, then to another chamber or lab,
as desired.

If you require
Boundary Scan connections, perhaps 8 or more at a time, then The Drawer
makes an excellent platform.  In the above diagram, replace the words "Device to test" with
"Card #x" where x = {1..8} or {1..16}. The cards are held in place by a custom-slotted block
of Delrin, with any additional needed pogo-pin connectors.

Sometimes, a unit may be tested "back to back" with a Gold Unit (see below).  This is a very
cost effective test method.  Software configuration is limited to setting parameters in the
unit, unless any code to be downloaded is stored on the PC.