Switch
Definition
A
Communication switch
B
ISP connector (for firmware upgrades)
C
RJ-45/SFP connector
D
SD card slot
E
Reset buttons
F
22-pin connector
Note: Switch E has two buttons. Only the button closest to the 22-pin connector is used to
restore factory server defaults. The other button is reserved.
To restore factory server defaults
● Power up the camera while holding button E.
Continue to hold the button for 30 seconds after powering the camera.
4.2
Communication switch configuration
The communication switch of the HSD626EXP is specified in the table below. The default
settings are depicted in the figure. You are advised to verify the accuracy of the
communication switch configuration but do not change the default settings, or some functions
may not work properly.
Communication switch Switch
Description
1
RS-485
2
3
Termination
4
Line lock
5
System initialisation. Switch 5 is mainly used to
restore the factory defaults of the camera.
6
Camera upgrade. Users must reset switch 6 after
firmware upgrades are carried out.
RS-485 is the interface that enables communication between the HSD626EXP and its control
device. This means that the RS-485 setup of the camera and that of the control device must
be the same. The RS-485 default setting is half-duplex, as shown in the figure below. Do not
change the default setting without consulting a qualified specialist or supplier.
Half duplex
Full duplex
RJ-485 settings
Dome camera setup
14
