Chapter 3 — Electrical Integration
ED40 Decode Board Integration Guide
17
Power Enable
The Power Enable signal is an external hardware driven signal that switches the
scanner (decode board + imager) power on (when low) and off (when high),
except when writing setup parameters in non-volatile memory. To do this, the
scanner activates the Power Hold signal, an internal software driven signal, that
allows the scanner to stay on even if the Power Enable line is high (off )
.
The Power Hold signal is an internal software driven signal that can be
configured using EasySet or the Power Hold ISCP command (Setup 70, 47).
When Power Hold is disabled, the scanner activates the Power Hold signal only
when writing setup parameters in non volatile memory.
When Power Hold is enabled, the scanner activates the Power Hold signal:
•
at start up
•
at the beginning of a reading session
•
after reception of a correct ISCP frame
•
while writing setup parameters in non volatile memory
The scanner deactivates the signal:
•
at the end of a reading session
•
after receiving a Sleep command
10
Input
CTS/Detect in 2
The host authorizes transmission on TXD line
(RTS/CTS hardware protocol).
11
Output
Buzzer
Used to drive the external buzzer with 50% duty
cycle square wave with a frequency range from 0.1
kHz to 4.0 kHz.
Contact 11 does not provide enough current (4
mA) to drive the buzzer. You must add a
transistor between contact 11 and the buzzer. For
more information, see
12
Input
Detect in 0
Must be connected to ground for an RS-232
connection.
Must be connected to Vcc for a USB connection.
Contact Assignment—Host Connector
Contact
I/O
Name
Description
Electrical Equivalent
Data in
100 K
100 K
Vcc in
Data out
Enable
Data in
47K
47K
Power enable
Vcc in
Power hold
Summary of Contents for ED40
Page 4: ...iv ED40 Decode Board Integration Guide ...
Page 22: ...Chapter 2 Mechanical Integration 10 ED40 Decode Board Integration Guide ...
Page 32: ...Chapter 3 Electrical Integration 20 ED40 Decode Board Integration Guide ...
Page 48: ...Chapter 4 ED40 Setup 36 ED40 Decode Board Integration Guide UPC A ...
Page 50: ...Chapter 4 ED40 Setup 38 ED40 Decode Board Integration Guide ...
Page 92: ...Appendix A EA11 Imager 80 ED40 Decode Board Integration Guide ...
Page 130: ...Appendix C EA21 Imager 118 ED40 Decode Board Integration Guide ...
Page 153: ...Appendix D EA30 Imager ED40 Decode Board Integration Guide 141 ...
Page 154: ......
