4© Baader Planetarium GmbH | 2019 5Manual: Steeldrive II Motor Unit2. Dimensions and PortsDimensionsSee images to the right and below.D: 32mmC: 35mmA: 43 mmABDCB: 70 mm1. Scope of DeliveryScope of Delivery of the Motor Unit for Steeltrack® Focusers1. Steeldrive II (SD II) motor unit for Steeltrack® focusers2. CAT 7 cable (3 m) to connect the control unit3. SD II toothed belt for Steeltrack® focuser4. Temperature sensor with phone connector.Can be used with SD II motor units or SD II control units5. Magnet holder for homing-sensor – can be used with DiamondSteeltrack® and similar focusers, includes mounting screw6. Allen key (2 mm)7. Velcro tapes (cable ties) for strain-relieving cable managementOptional Accessories:• Additional temperature sensor # 2957263• Metal Magnet Ring for Homing-Sensor – fitting for Baader Diamond Steelt-rack® focusers # 2957264• Mini DIN / Cinch adapter cable to connect heat pads (dew shield heaters)# 2957262For further accessories like adapters to use the SD-II motor unit with other fo-cusers, please visit www.baader-planetarium.com/en/bdsPlease noteThe SD II motor unit is designed tobe operated with the SD II controlunit. If you want to use the motorwithout the SD-II Control unit, youcan find a diagram with the pinconfiguration for a self-made con-trol to the right.1 23compatible with25 mm and 27mm dovetailsPorts1. RJ45-port, connects to the control unit(no network functionality)2. 3.5 mm phone jacket for temperature sensor3. Strain relief for the connected cablesDrive pinion Motor block1273 4 56