iOptron HEM27 - Go2 Nova 8409 Hand Controller; Key Description

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 DC 12V IN: DC power socket to power the mount (5.5mmX2.5mm/5525, center positive)
 I/O: Power switch
 iPolar: iPolar miniUSB port
 HBX (Hand Box): For connecting to an 8409 Hand Controller
 ST-4: ST-4 compatible autoguiding port. The wiring is shown in Figure 3
Figure 3. ST-4 Compatible Guiding Port Wiring
 DC 12 OUT (on top of the mount body): DC power output socket (5.5mmX2.1mm/5521, center
positive). Maximum current 4A, combined with DC 12V output from dovetail saddle.
 USB INPUT: USB pass through to the USB port on dovetail saddle.
On Dovetail Saddle:
Figure 4. Port on dovetail saddle
 DC12V 3A 5521: DC power output socket (5.5mmX2.1mm/5521, center positive). Maximum
current 3A
 USB: USB-A port connect to mount body.
2.4. Go2Nova
®
8409 Hand Controller
The Go2Nova
®
8409 hand controller (HC) shown in Figure 5 is the standard controller used on the
HEM27 mount. It has a large LCD screen, function, direction, and number keys on the front; and an HBX (6-
pin) and a USB port at the bottom.