iOptron CEM120 Assembly Instructions

DIN‐422PlugAssembly(forCEM120AUXPort)
ThisinstructionillustratedhowtoassembletheDIN‐422
plug.You’llneedtodecidethewirecounts(upto4)and
wire gauge (depends on total current the device will
draw).Forexample,ifthemaximumcurrentdrawnper
pairis5A,youprobablyneedAWG20wires.
Solderingwork(orothermeans)isneededtoattachthe
wires.Thereare4conductorsinsidethisminiDIN
connector.Makesureyoumark/rememberwhichwire
eachofthemissolderedto.
iOptronisnotresponsibleforanyaccidentordamaged
partduringassemble.
A non‐assembled DIN‐422 plug has 7 small parts, as
shownbelow.

1. Selectacorrectwire/wirebundle.Cuttoaproper
length. Strip the plastic coating outside the wire.
Solder them to the short pins on the plug. Please
note that 4 pins on the plug are NOT placed
uniformly.(see2)

2. Inserttheplugtothechassewithtwoslotsaligned
to the spring reeds and two pins with wider
separation on top of the chasse with alignment
notch.Pushtheplugallthewayin.



3. Bendthemetalwingstolockthecable.

4. Inserttheblackspringstopringfromthewireend
andaligntwostudsalongtothespringreeds.
Slot
Springreed
Align.notch
Pinsw/wider
separation

iOptron CEM120 Specifications

General

GoTo System	Yes
Tracking Rate	Sidereal, Lunar, Solar, Custom
Power Supply	12V DC, 5A
Power Requirement	12V DC, 5A
Communication Ports	RS232, USB
PEC (Periodic Error Correction)	Yes
Mount Type	Center-Balanced Equatorial
Payload Capacity	120 lbs (54.4 kg)