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On the drive base cover are four electrical connectors; three 3.5mm miniature phono jacks and one modular
telephone jack. Starting from the left, the first, labeled '12VDC,' is for an external power source. This outlet is for
external power source adapters, either AC (#18772).
WARNING:
When plugging into an external power source, ALWAYS plug the connector into the drive
base first then the source outlet. Failure to do so will result in damage to the circuit board.
Next is the outlet for the optional DEC motor, and is appropriately labeled 'DEC.' The DEC motor allows you to
make minor adjustments to the DEC axis using the buttons on the hand controller. Such an accessory is mandatory
for deep sky astrophotography.
The third outlet, labeled 'FOCUS,' is for the optional focus motor. This accessory allows you to focus the telescope
using the buttons on the hand controller.
NOTE: If the DEC and/or focus motors are used, the maximum operating time of the drive is reduced when
using the internal 9-volt battery.
The last outlet is the female end of a modular phone-type jack. This outlet accepts the male end of the hand
controller. The hand controller is NOT needed for normal tracking. It is used to make corrections during long
duration astrophotography. To plug the hand controller into the drive base:
1.
Hold the end of the hand cable with the modular photo jack over the outlet in the base.
2.
Orient the jack so that the plastic tab is down.
3.
Slide the jack into the outlet until it clicks.
The hand controller is now installed and ready to use. Pressing the buttons on the hand controller will speed the
motor up or slow it down allowing you to make corrections for long exposure astrophotography. If you are using the
optional DEC motor, all corrections to the DEC axis will also be made from the hand controller.
42
CONNECTORS
1
Ultima 9
/
and Ultima 11 Manual
4
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