13
For large data transmission, use of hardware flow control is highly recommended.
3.3.3. Reset to Factory Defaults
To turn back all the configurations to its factory settings, press the reset button depicted in Fig. 1-3.
Press the reset button with a narrow pointed tool like paper clip longer than 1 second. Reset works
only when power is on.
3.3.4. Dipswitch
This feature is only on Parani-SD205. With the combination of 4 slot dipswitches, baud rate and
hardware flow control can be set simply without host computer.
Figure 3-1 The Parani-SD Dipswitch
Upper 3 dipswitches are used for setting baud rate, and bottom dipswitch is used for setting hardware
flow control option. If the baud rate needs to be set out of the range given below, ParaniWIN or
terminal program should be used for extended AT commands. At this time combination of dipswitches
must be complied with AT cmd. Then baud rate will go back to 9600 as default.
Table 3-4 Baud rate Settings by Dipswitches
2400 4800 9600 19.2K 38.4K 57.6K
115.2K
AT
cmd
Baud rate
Table 3-5 Hardware Flow Control Settings by Dipswitches
No Use
Use
Hardware Flow Control
Handshaking
‘
3.3.5. Pairing Button
Parani-SD provides Pairing Button for instant configuration without PC to make an automatic
connection between two Parani-SDs. For convenience sake, name two Parani-SDs as SD1 and SD2
respectively.
Step 1.
Turn off all the nearby Parani-SD
Step 2.
Turn on SD1 and SD2 and hardware reset both of them by pressing Reset Button.
Step 3.
Press the Pairing Button of SD1 for 2 seconds until Standby LED turns off and Connect LED
blinks 3 times every 2 seconds. Keep the power ON.
Step 4.
Press the Pairing Button of SD2 for 2 seconds until Standby LED turns off and Connect LED
Pairing Button
Dip Switch
Reset Button
