Rangemaster HAMILTON AM1000 User Manual
Rangemaster Satellite
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Table of contents
Document Outline
- The goal here is to get the proper level to the input of the 222 and to the transmitter.
- Input: Connect your audio source as explained. You should be able to see some indication on the Peak limit and Pre - emphasis LED indicators as you adjust the input gain. Be sure they are on. If you cannot get any indication with the input gain all the way up then remove the cover (with the 222 unplugged) and set the (input range select) to the low position (marked L on the board). You should be able to get an indication now, if not check to see if you have an input signal.
- Once you have the audio material showing on the indicators, then try to connect the transmitter. Depending on where the audio gain is on the transmitter unit you may or may not be able to get good sound at this point. If you cannot get good sound in the entire range of the 222 output level control then check the transmitter audio gain, it should be 1/2 to fully clockwise, it is preferable not to have it lower then 1/2 way. If you are way over driven try turning the transmitter audio gain down a bit, you may need to turn it down to almost off if you are getting to much drive from the 222. Adjust 222 output level and Transmitter level for good sound from a test radio. Be careful about having a radio to close to the transmitter, it can be overloaded. Try to get the audio level as high as you can.
- If you have a unbalanced input signal to the 222 (hot and ground, single wire with shield) then connect the ground or shield of the input signal cable the the ground input, the (+) 222 input terminal goes to your center conductor. Connect the (-) input terminal to the ground.
- Don't solve the gain problem by just turning down the input control, you will get good sound but the 222 will not operate properly. You should be able to see the lights come on as the music peaks if you have the limit and/or pre emphasis controls on.
- Balanced audio is two twisted wires, the signal exists as a difference voltage between the two wires. There is no ground. If there is a ground, it is there just for shielding.