Mdc-1200 Deviation Tuning; Receiver Tuning; Figure 5-8. Mdc-1200 Deviation Tuning Window - Motorola EP450 Basic Service Manual

5-10
5.4.6

MDC-1200 Deviation Tuning

This tuning option controls the MDC-1200 Signaling deviation. Please note that Modulation Balancing
and VCO Attenuation have to be performed prior to this tuning operation. Not doing so will result in
the wrong deviation value being obtained while tuning this feature.
1. Under the Tx Align, select MDC-1200 Signaling
2. Press PTT Toggle to key the radio up. Monitor the deviation obtained.
3. Adjust the slider, spin or edit control (press ENTER to confirm the selection/send a softpot value)
until a deviation of 3.3-3.7 kHz is obtained.
4. Press PTT Toggle again to dekey the radio.
5. Program the softpot value into the radio by pressing the Program.
6. Exit the MDC-1200 Deviation function.
5.5

Receiver Tuning

The following sub-sections contain the procedures to tune the radio receiver. These procedures
include:
• Rated Volume
• Squelch Tuning Front End Filter Tuning
December 3, 2003
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Figure 5-8. MDC-1200 Deviation Tuning Window

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Radio Alignment Procedures: Receiver Tuning
(Figure 5-8).
HKLN4215A