Troubleshooting Flow Chart
UHF1 (400
‐
470 MHz)
34
[2] Use the communication test set to input a 58.05 MHz IF signal at the mixer, and check whether it can
be processed normally afterwards.
[3] Use a spectrum analyzer to check whether TP6004 can output the second LO signal (55.8 MHz).
[4] Use the communication test set to input an RF signal of -100 dBm, and test the sensitivity.
[5] Use a spectrum analyzer to test the LO signal received by C6157. If its strength is about 18 dBm, go
to check the mixer; otherwise, check the VCO.
[6] Use the communication test set to input an RF signal of -110 dBm to LNA, and test the sensitivity.
Содержание MD652
Страница 1: ...DIGITAL MOBILE RADIO...
Страница 5: ...UHF1 400 470 MHz...
Страница 9: ...Product Controls UHF1 400 470 MHz 2 Bottom View No Part Name No Part Name 1 Label 3 Fan 2 Fan Cover...
Страница 15: ...Exploded View and Packaging Guide UHF1 400 470 MHz 8 3 2 Packaging Guide...
Страница 53: ...43 9 PCB View Front Panel PCB View Top Layer X...
Страница 54: ...44 Front Panel PCB View Bottom Layer...
Страница 55: ...45 Main Board PCB View Top Layer...
Страница 56: ...46 Main Board PCB View Bottom Layer...
Страница 106: ...VHF1 136 174 MHz...
Страница 110: ...Product Controls VHF1 136 174 MHz 2 Bottom View No Part Name No Part Name 1 Label 3 Fan 2 Fan Cover...
Страница 116: ...Exploded View and Packaging Guide VHF1 136 174 MHz 8 3 2 Packaging Guide...
Страница 154: ...43 9 PCB View Front Panel PCB View Top Layer...
Страница 155: ...44 Front Panel PCB View Bottom Layer...
Страница 156: ...45 Main Board PCB View Top Layer...
Страница 157: ...46 Main Board PCB View Bottom Layer...
Страница 207: ...1616300000360 11 2014 L07157 2014 Hytera Communications Corporation Limited Hytera Communications Corporation Limited...