User Guide

PAMS

Technical Documentation

NME–3

JBD–2 User Guide

Page 16

Issue 1 10/99

Test Setup

JBD–2

TDC–4

Measure Application

Activate the switch, NME–3–RU has to be running.

While the RU is running press the IGNS switch (operates/stroke) for a

short time in the other position, WinTesla will show the changes in a

window.

BLD

The signal can be superimposed (supercharged) with fixed values of a

PWM. If the backlight signal is active the green LED (BLD), has to be lit.

• If a handset is available, the test path can be checked visually.

• If no HS is available the converted value can be read from the RU and

compared with the expected value. This is a semi–automatic test.

VDA Signals

RU Connector

PWM

Generator

BACKLIGHT

75%

OFF

100%

BLD

Figure 12. PWM Circuit

Note: 100% – maximum brightness

75% -¾ of maximum brightness (conforms a duty cycle with

50%)