Spectra Engineering MX800 - Alignment Procedures (continued); 5.1.12 RX Line Output Level Adjustment; 5.1.13 TX VF Loop Back Level; 5.1.14 Mute Threshold Setting

Technical Manual Alignment and Testing
© SPECTRA ENGINEERING 2006 Revision 4.2.3
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2. Enable the repeater. The repeater may be enabled by turning on switch
4, of DIP2, inside the radio. Alternatively the repeater may be
enabled/disabled via the repeater enable pin 8 of the Line I/O connector.
The polarity of the repeater enable function is dependent on how the
internal LIFULOCEN jumper is set (JMP14).
3. Set the receiver modulation frequency to 1kHz and the FM deviation to
that specified in Table 2 - Nominal Deviation, for the particular RF
receive frequency of the test channel.
4. Adjust TTR Deviation RV3 to obtain the same deviation as input to the
RX. (See Table 5-2 Nominal Deviation).
Note The test channel must be programmed as a repeater channel so this
potentiometer can be setup. If not then temporarily alter the channel
settings using the Channel Edit Screen in MXTOOLS.