CHAPTER 3 INTERFACE
B-EP Series
3-42
Application layer
IrOBEX
Tiny TP (PTTP1)
IrLMP (LMP3)
IrLAP
IrDA-SIR
3.4 IrDA (IrOBEX) INTERFACE
The protocol for IrOBEX specifications is provided.
parts are required.
Item Specifications
Communication mode Physical layer conforming to IrDA-SIR V1.2 (Low
Power) standard
Transfer speed 9600, 19200, 38400, 57600, 115200 bps
*1
Communication distance within 0.2 m
*2
Peak wave length of
emitted light
850 to 900 nm
Communication angle within ±15°
Ambient illuminance 1000 lx or less
(fluorescent lamp and incandescent lamp)
Emissive power Min 3.6 mW/Sr (θh, θv ≤ ±15°)
Min. photo sensibility Min 9 µW/cm
2
(θh, θv ≤ ±15°)
*1: Values are dependent on the communication protocol settings.
*2: The communication distance may become shorter than 0.2 m, depending on the host’s
performance.
Device nickname: 2-inch/203-dpi model ......... B-EP2DL-G
4-inch/203-dpi model ......... B-EP4DL-G
Service name (Class name): IrDA: IrOBEX
Min. turnaround time: 1 msec
Link termination threshold time: 12 sec
3.4.1 HANDLING OF RECEIVED DATA WHEN THE PRINTER GOES INTO POWER SAVE MODE
Data is left in the received buffer until reception is stopped and a timeout occurs (power save
mode) because the received buffer has not been initialized.
IrDA V1.2 (Low Power) standard
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