tuning procedure

FCC ID: INGMH-950

Parts List/Tune Up Info

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FCCID_311573

TUNE UP PROCEDURE of Mh-950

1-1、 Frequency adjustment
1. Connect the L210 with the frequency counter.
2. Connect the C113 with the digital DC multimeter.
3. Adjust the VC102 to make the DC voltage exist between 0.5 ~ 4V.
4. Adjust the VC101
5. Specification: TX frequency ± 1KHz.

1-2、 RF power test
1. Connect the L210 with the RF power meter.（RF impedance，50Ù.）
2. Switch on the transmitter.
3. Check the RF power level at 10dBm ±1dBm

1-3、 Deviation adjustment
1. Connect the L210 with the modulation meter.
2. Apply the audio signal 1KHz、30mV to the MIC point.
3. Adjust the VR2 .
4. Specification :22KHz ± 1K.

1-4、 Tone key adjustment
1. Connect the L210 with the modulation meter.
2. Connect the transmitter with power supply at 2.5V ± 0.1V
3. adjust the VR301.
4. Specification : 6K ± 0.2KHz.

Document Created: 2019-08-29 02:49:50
Document Modified: 2019-08-29 02:49:50

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