21
The nGoodRead pin (PIN 10) produces a low output (default duration: 20ms, user-programmable) when a good read
occurs. The Good Read LED can be programmed On or Off. To learn how to program these parameters, please see
the EM2037 V4 user guide.
For the external LED circuit design, please see the
“Good Read LED Circuit” section in this chapter. If the nGoodRead
pin is not used, leave it unconnected.
※
4 This external trigger signal can be either level trigger or pulse trigger.
Level trigger:
A trigger pull (i.e. driving the nTRIG pin low for over 10ms) activates a decode session. The decode
session continues until a barcode is decoded or the trigger is released.
Pulse trigger:
When the trigger is pulled and released (pulse width : 50ms), scanning is activated until a barcode is
decoded or the decode session timeout expires.
For the external trigger circuit, please see
the “Trigger Circuit” section in this chapter. If the nTRIG pin is not used,
leave it unconnected.
5-pin Box Connector
The following table lists the pin functions of the 5-pin box connector.
Table 4-2
PIN#
Signal
I/O
Function
1
GND
-
Power-supply ground.
2
GND
-
Power-supply ground.
3
D+
I/O
USB D+ differential data signal
4
D-
I/O
USB D- differential data signal
5
VIN
-
Power supply input
Connector/Cable Specifications (Unit: mm)
The EM2037 is equipped with a 12-pin FPC connector and a 5-pin box connector.
12-pin FPC Connector
The 12-pin FPC connector on the EM2037 is a CviLux Corporation FFC/FPC connector (Model No.: CF20121V0R0-LF).
