Chapter 2 Installation; Introduction; General Information; Default Power Mode - Motorola SE4750 Integration Manual

CHAPTER 2 INSTALLATION

Introduction

This chapter provides information for mounting and installing the SE4750, including physical and electrical
considerations, and recommended window properties for the SE4750.
CAUTION
CAUTION

General Information

Default Power Mode

The default power mode for the SE4750 when connected to a PL3300 decoder is Bus-Powered USB Mode
(<500mA). VCC_ILLUM must be 5V when in this mode to achieve expected illumination brightness.
If operating in Self-Powered USB Mode (>500mA) or RS-232 Mode with VCC_ILLUM =3.3V, configure the PL3300
for one of these modes using config 0 and config 1 signals in order to achieve expected illumination brightness.
IMPORTANT
Mixing Bus-Powered USB Mode with VCC_ILLUM =3.3V does not achieve the expected illumination brightness.
This results in decode performance degradation and should be avoided.

Grounding

The chassis is at ground. Isolate the SE4750 and host if installing the engine to a host that is not at ground, or has
ground with the potential to inject noise.
When handling engines, do not touch the imaging lens. Properly protect fingers to prevent prints on
this lens.
Use care not to touch the Illumination LEDs during handling. Improper handling can damage the LED
lenses.