Controls And Display; Controls; Key-Selected Functions - Cablescan 256/PC Instruction Manual

Model 256/PC Instruction Manual

CONTROLS

All functions are controlled by keys on the front panel (Figure 15). Seven of the main functions
are selected by individual keys and fourteen additional functions are menu-selected through Up
and Down keys and executed by the Menu Run key.

KEY-SELECTED FUNCTIONS

The seven functions that are directly selectable by individual keys are as follows:
Seq Build
Random Build
Error List
Test
Seq Build
The Seq Build (Sequential Build) key is selected when a specific assembly sequence must be
followed. In this mode, the Model 256/PC follows the programmed order of the wire list and
displays the FROM/TO points of each successive open circuit to be assembled. When a proper
termination has been completed, the display advances to the next open pair of points. Body
conductance (Wrist Strap or Probe) can be used in locating the proper wire from a bundle. The
assembly sequence of the wire list is first programmed off-line with a PC and then downloaded
with optional PC software to the Model 256/PC. Once in the tester, the program can be saved to
tester memory.
Random Build
The Random Build key is selected when the sequence of assembly is not important. In this
mode, the tester waits for the operator to select a wire and then displays the corresponding
FROM/TO points of the open circuit. Body conductance (Wrist Strap) is used to select and
display the wire touched by the operator.
termination is completed. The wire list program can be downloaded with optional PC software,
or generated using Learn Known Good.
Error List
When Error List is selected, a test scan is initiated and all detected errors are printed. If no error
is located, a "PASSED" is printed.
Test
This is a single-scan test mode; when Test is selected, one complete scan is performed on the
circuit under test, comparing it with the wire list program in memory. If the test is successful,
the display shows "Passed XXXX/YYYY," and the tone sounds. If an error is encountered, the
points in error are displayed, along with an indication of whether the error is an open or short.

CONTROLS AND DISPLAY

Each continuity is then verified when proper
Reset
Up/Down Arrows
Menu Run
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