Why does my NexStar* hand control say Transmit Data?
October 27, 2008
It appears that your hand control is stuck in programming mode. Fortunately, it is an easy fix:
1. Cycle the power of your scope. This will often clear the condition.
2. If you have an RS-232 cable (the cable that attaches between your computer's serial port and the port on the bottom of the hand control) you will be able to download the HCupdate program that will allow you to reprogram the hand control.
Complete instructions on how to do the upgrade/reflash your hand control, click here.
If you are unable to program the hand control or this problem continues after attempting to program it, your hand control needs to be replaced. Contact Celestron Support for help.