iOptron CEM70 Instruction Manual page 8


iPORT: Auxiliary port for connecting to other iOptron accessories, such as an electronic focuser
or for observatory dome control. DO NOT plug ST-4 guiding camera cable into this port. It will
damage the guide camera electronics.

DC 5521: 2.1mmX5.5mm DC output sockets for your accessories. The maximum specified
current output is 5A. They are connected to the DC IN on the rear end of RA axis (Figure 6). The
voltage is determined by the input voltage, such as 5V or 12V.

USB2.0 port: 2X powered USB2.0 port and 1X unpowered USB 2.0 ports. It is connected to the
iPolar/USB input on the rear end of RA axis (Figure 4).

5521 12V socket X2: These two 12V DC output sockets are powered by mount main DC 12V
power. The combined maximum power output is 3A.
On Rear End of RA axle:

DC input (2.5mmX5.5mm) to power 5521 (2.1mmX5.5mm) DC output sockets located next to
iPort on the dovetail saddle

iPolar/USB port: This port is for iPolar connection to computer, and 3XUSB2.0 hub on dovetail
saddle connection
CEM70G
On Mount Base Main Panel:
The main cable connection ports of a CEM70G are shown in Figure 5:

DC 12V 5A: DC power socket to power the mount (2.5mmX5.5mm, 5525)

ON/OFF: Power Switch

ST-4:Autoguide port
Figure 3. Ports on CEM70 dovetail saddle
Figure 4. iPolar/USB and DC input on the rear end of RA axle
Figure 5. Ports on a CEM70G mount base
Powered
or
8