20
Programming the Audio Levels:
After determining the audio levels at the audio hookup points, it will be necessary to program the unit to match
these levels. In the programming software, there is a slider control on the Audio Levels Screen for each of the of
four audio hookup points. Locate the column that corresponds to the modulation and units of measurement for
each of the audio hookup points. Adjust the slider bar such that the value appearing in the appropriate column
matches what was measured as closely as possible.
The following table shows Midian’s recommended levels for the SVR at 60% modulation (mVpp) for tested
models of radios:
Motorla Radio Model
RX In
TX In
RX Out
TX Out
CDM-750, CDM-1250, GM-140, GM-160, GM-328, GM-338,
GM-398, PRO-3100, PRO-5100, PRO-7100
876
216
192
222
GM-340, GM-360, GM-380, GM-339, GM-399, PRO-7200
1044
222
240
216
GM-338-LS, CDM-1550-LS+
678
138
150
138
GM-640, GM-660, GM-1280, MCX-720, MCX-760, MCX-780
