
NGT—Checks and adjustments
NGT Transceiver System Technical Service Manual
171
Adjusting carrier re-insertion
To adjust carrier re-insertion:
1
Select test channel 16 with AM mode.
1
Unplug the coaxial cable between the PA PCB and the RF/IF PCB in the RF unit.
1
Connect an oscilloscope with a 50
Ω
termination to the Tx test point on the
RF/IF PCB.
1
Using the transceiver test unit, apply an audio signal of 1 kHz at a level of
300 mV p–p to:
•
the audio input on the 15-way GPIO connector on the junction box or 2012 RF
Unit (see
•
the 2011 RF Unit via the NGT test handset (see
)
1
Hold down
PTT.
1
Adjust R217 (near the SSB filter Z201) for 100% modulation.
1
Rotate R217 clockwise to set it to approximately 90% modulation (see
).
Figure 42: Graph showing adjustment to 90% modulation
1
Release PTT.
ALTERNATIVE TEXT
Drawing
NOTE
If the PCB issue status is -06 or earlier, see drawing
NOTE
The exciter output level must be set before this adjustment is made (see
Adjusting the exciter output level
).
NOTE
The transceiver must be in Service mode to perform this check (see
).
¼ Div
6 Div
Содержание NGT 2010 RF
Страница 87: ...03 01032 Issue 2 ...
Страница 88: ...03 01032 Issue 4 ...
Страница 97: ...03 01126 ...
Страница 98: ...03 01190 ...
Страница 234: ...NGT Parts lists 200 NGT Transceiver System Technical Service Manual This page has been left blank intentionally ...
Страница 428: ...04 03223 ...
Страница 429: ...04 03562 CODAN ...
Страница 430: ...04 03437 ...
Страница 431: ...04 03533 ...
Страница 432: ...08 05513 ...
Страница 433: ...08 05514 sheet 1 ...
Страница 434: ...08 05514 sheet 2 ...
Страница 435: ...08 05628 sheet 1 ...
Страница 436: ...08 05628 sheet 2 ...
Страница 437: ...08 05628 sheet 3 ...
Страница 438: ...08 05628 sheet 4 ...
Страница 439: ...04 03125 ...
Страница 440: ...08 05300 ...
Страница 441: ...08 05522 ...
Страница 442: ...08 05523 ...
Страница 443: ...08 05524 ...
Страница 444: ...04 03201 ...
Страница 445: ...08 05470 ...
Страница 446: ...04 03423 ...
Страница 447: ...08 05986 sheet 1 ...
Страница 448: ...08 05986 sheet 2 ...
Страница 449: ...04 03133 ...
Страница 450: ...08 05317 ...
Страница 451: ...04 03109 ...
Страница 452: ...08 05266 ...
Страница 453: ...04 03108 sheet 1 ...
Страница 454: ...04 03108 sheet 2 ...
Страница 455: ...08 05265 ...
Страница 456: ...04 03106 sheet 1 ...
Страница 457: ...04 03106 sheet 2 ...
Страница 458: ...04 03106 sheet 3 ...
Страница 459: ...08 05261 sheet 1 ...
Страница 460: ...08 05261 sheet 2 ...
Страница 461: ...04 03095 ...
Страница 462: ...08 05235 ...
Страница 463: ...04 03378 sheet 1 ...
Страница 464: ...04 03378 sheet 2 ...
Страница 465: ...04 03378 sheet 3 ...
Страница 466: ...04 03378 sheet 1 ...
Страница 467: ...04 03378 sheet 2 ...
Страница 468: ...04 03378 sheet 3 ...
Страница 469: ...08 05889 sheet 1 ...
Страница 470: ...08 05889 sheet 2 ...
Страница 471: ...08 05889 sheet 1 ...
Страница 472: ...08 05889 sheet 2 ...
Страница 473: ...04 03410 ...
Страница 474: ...04 03414 ...
Страница 475: ...08 05963 ...
Страница 476: ...08 05962 ...
Страница 477: ...08 05973 ...
Страница 478: ...04 03169 ...
Страница 479: ...08 05415 ...
Страница 480: ...08 05416 ...
Страница 481: ...08 05511 sheet 1 ...
Страница 482: ...08 05511 sheet 2 ...
Страница 483: ...04 03369 ...
Страница 484: ...08 05869 sheet 1 ...
Страница 485: ...08 05869 sheet 2 ...
Страница 486: ...08 05869 sheet 3 ...
Страница 487: ...08 05910 sheet 1 ...
Страница 488: ...08 05910 sheet 2 ...
Страница 489: ...04 03542 ...
Страница 490: ...08 06461 sheet 1 ...
Страница 491: ...08 06461 sheet 2 ...
Страница 492: ...08 06461 sheet 3 ...
Страница 493: ...08 05910 sheet 1 ...
Страница 494: ...08 05910 sheet 2 ...
Страница 495: ...04 03425 ...
Страница 496: ...08 05988 sheet 1 ...
Страница 497: ...08 05988 sheet 2 ...
Страница 498: ...04 03424 sheet 1 ...
Страница 499: ...04 03424 sheet 2 ...
Страница 500: ...08 05987 ...
Страница 501: ...04 03499 sheet 1 ...
Страница 502: ...04 03499 sheet 2 ...
Страница 503: ...08 06261 sheet 1 ...
Страница 504: ...08 06261 sheet 2 ...
Страница 505: ...04 03498 sheet 1 ...
Страница 506: ...04 03498 sheet 2 ...
Страница 507: ...08 06260 ...
Страница 508: ...04 03379 ...
Страница 509: ...08 05890 ...
Страница 510: ...15 10506 001 ...
Страница 511: ...15 10514 001 ...
Страница 512: ...04 03110 ...
Страница 513: ...08 05267 ...
Страница 514: ...04 03514 ...
Страница 515: ...08 06320 ...
Страница 516: ...04 03272 ...
Страница 533: ...03 01138 ...
Страница 534: ...03 01139 ...
Страница 560: ...High power Parts lists 246 NGT Transceiver System Technical Service Manual This page has been left blank intentionally ...
Страница 604: ...04 03422 ...
Страница 605: ...08 05985 ...
Страница 606: ...04 03419 ...
Страница 607: ...08 05997 ...
Страница 608: ...04 03420 ...
Страница 609: ...08 05999 ...
Страница 610: ...04 03416 ...
Страница 611: ...08 05977 sheet 1 ...
Страница 612: ...04 03428 ...
Страница 613: ...08 05998 ...
Страница 614: ...04 03429 ...
Страница 615: ...08 06000 ...
Страница 616: ...04 03415 ...
Страница 617: ...08 05976 sheet 1 ...
Страница 618: ...08 05976 sheet 2 ...
Страница 619: ...04 03418 sheet 1 ...
Страница 620: ...04 03418 sheet 2 ...
Страница 621: ...08 05979 sheet 1 ...
Страница 622: ...08 05979 sheet 2 ...
Страница 623: ...04 03417 ...
Страница 624: ...08 05978 sheet 1 ...
Страница 625: ...08 05978 sheet 2 ...
Страница 626: ...08 05978 sheet 3 ...
Страница 627: ...04 03421 ...
Страница 628: ...08 05984 ...
Страница 629: ...04 03453 ...
Страница 630: ...08 06067 sheet 1 ...
Страница 631: ...08 06067 sheet 2 ...
Страница 632: ...08 06102 sheet 1 ...
Страница 633: ...08 06102 sheet 2 ...
Страница 634: ...04 03377 ...
Страница 635: ...08 05926 sheet 1 ...
Страница 636: ...08 05926 sheet 2 ...
Страница 637: ...04 03407 ...
Страница 638: ...08 05927 sheet 1 ...
Страница 639: ...08 05927 sheet 2 ...
Страница 653: ...NRI Brief description 260 NGT Transceiver System Technical Service Manual This page has been left blank intentionally ...
Страница 654: ...03 01079 ...
Страница 680: ...NRI Fault finding 286 NGT Transceiver System Technical Service Manual This page has been left blank intentionally ...
Страница 682: ...NRI Parts lists 288 NGT Transceiver System Technical Service Manual This page has been left blank intentionally ...
Страница 699: ...NRI Drawings 290 NGT Transceiver System Technical Service Manual This page has been left blank intentionally ...
Страница 700: ...04 03363 sheet 1 ...
Страница 701: ...04 03363 sheet 2 ...
Страница 702: ...08 05854 sheet 1 ...
Страница 703: ...08 05854 sheet 2 ...
Страница 704: ...08 05854 sheet 3 ...
Страница 705: ...04 03364 ...
Страница 706: ...08 05855 ...
Страница 707: ...04 03370 ...
Страница 708: ...08 05870 ...
Страница 720: ...3012 Brief description 300 NGT Transceiver System Technical Service Manual This page has been left blank intentionally ...
Страница 721: ...03 01080 ...
Страница 723: ...3012 Brief description 302 NGT Transceiver System Technical Service Manual This page has been left blank intentionally ...
Страница 737: ...3012 Parts lists 316 NGT Transceiver System Technical Service Manual This page has been left blank intentionally ...
Страница 748: ...3012 Drawings 318 NGT Transceiver System Technical Service Manual This page has been left blank intentionally ...
Страница 749: ...04 03366 sheet 1 ...
Страница 750: ...04 03366 sheet 2 ...
Страница 751: ...08 05860 sheet 1 ...
Страница 752: ...08 05860 sheet 2 ...
Страница 753: ...04 03367 ...
Страница 754: ...08 05861 ...
Страница 770: ...8571 Brief description 332 NGT Transceiver System Technical Service Manual This page has been left blank intentionally ...
Страница 771: ...03 01108 ...
Страница 801: ...8571 Parts lists 362 NGT Transceiver System Technical Service Manual This page has been left blank intentionally ...
Страница 825: ...8571 Drawings 364 NGT Transceiver System Technical Service Manual This page has been left blank intentionally ...
Страница 826: ...08 05994 sheet 1 ...
Страница 827: ...08 05994 sheet 2 ...
Страница 828: ...04 02541 ...
Страница 829: ...08 03905 ...
Страница 830: ...04 02690 ...
Страница 831: ...08 03993 ...
Страница 832: ...04 02691 ...
Страница 833: ...08 05995 ...
Страница 834: ...04 02852 ...
Страница 835: ...08 04644 ...
Страница 836: ...04 02487 ...
Страница 837: ...08 03817 ...
Страница 838: ...08 03995 ...