Recover From Low Power Mode (Usb); Figure 27: Recovery Example From Low Power Mode (Usb) - Opticon MDI-4000 Series Serial Interface Manual

MDI-4000 Series Serial Interface Manual
5.4.3

Recover from Low Power Mode (USB)

You can use a signal (TRIGn, CTS, and AIM/WAKEn) or a command to recover from low power
mode. Recovery starts when the host starts sending a command through USB. Approximately
43 ms after the command is sent, the scan engine becomes active and is ready to read
barcodes.
Note: USB always accepts the command and changes to Active mode when it sends the
command.
High
TRIGn
Low
or
USB+
Active
USB Host
Suspend
Wave form
State
Low power
*1
MDI-4x00 and MDI-4x50 have different recovery times: MDI-4x00 = 18 ms, MDI-4x50 = 43 ms.

Figure 27: Recovery Example from Low Power Mode (USB)

46
Trigger command "Z" etc
*1
I
LOW
Recovery
10 ms -
I
OP
* Configured
I
STD
Read
I
LOW
Standby Low pwer