Chapter 3 Electrical Specifications; Power Supply; Ripple Noise; Dc Characteristics - Newland NLS-EM3080-W Integration Manual

Oem scan engine
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Power Supply

Do not power up the EM3080-W until it is properly connected. Be sure the power is cut off before connecting a flexible
cable to or disconnecting a flexible cable from the host interface connector. Hot-plugging could damage the engine.
Unstable power supply or sharp voltage drops or unreasonably short interval between power-ons may lead to unstable
performance of the engine. Do not resupply the power immediately after cutting it off. It is advised that the minimum interval
should exceed 500ms.
The EM3080-W itself does not provide a power switch. Users can switch the engine off by cutting off the power. Switching it
on and off frequently will not shorten the service life of the EM3080-W.
The EM3080-W's start-up time is less than 200ms.

Ripple Noise

Image sensor and decoder chip are directly fed by the input power of EM3080-W. To ensure the image quality, a power
supply with low ripple noise is needed.
Acceptable ripple range (peak-to-peak) : ≤50mV (≤30mV recommended).

DC Characteristics

Operating Voltage

Table 3-1 (T=23℃)
Parameter
V
DD
V
High Level Input Voltage
IH
V
Low Level Input Voltage
IL
V
High Level Output Voltage
OH
V
Low Level Output Voltage
OL
19

Chapter 3 Electrical Specifications

Description
Voltage Drain
Minimum
Typical
3.0
3.3
0.7*V
-
DD
-
-
0.9*V
-
DD
-
-
Maximum
Unit
3.6
V
-
V
0.2*V
V
DD
-
V
0.1*V
V
DD

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