American QRP Club NUE-PSK 운영자 매뉴얼 - 페이지 2
{카테고리_이름} American QRP Club NUE-PSK에 대한 운영자 매뉴얼을 온라인으로 검색하거나 PDF를 다운로드하세요. American QRP Club NUE-PSK 16 페이지. Digital modem
American QRP Club NUE-PSK에 대해서도 마찬가지입니다: 운영자 매뉴얼 (16 페이지), 빠른 시작 매뉴얼 (2 페이지)
페이지 인쇄CONTENTS
1)
Introduction ............................................................................................................ 3
2)
Connections ........................................................................................................... 3
3)
Specifications......................................................................................................... 4
4)
Power ...................................................................................................................... 5
5)
Signal Connections................................................................................................ 5
6)
Keyboard ................................................................................................................ 5
7)
Operation ................................................................................................................ 6
8)
Macros .................................................................................................................... 7
9)
Configuration Menu ............................................................................................... 8
10)
Updating Modem Software .............................................................................. 10
11)
12)
Technical Support ............................................................................................ 13
Appendix A: The Radio Cable ................................................................................... 14
Appendix B: Schematic ............................................................................................. 15
Appendix C: Release Notes....................................................................................... 16
Caution:
Shortly after going to production status and starting to ship the first round of modems,
we discovered a problem in the "power supply" area of the pc board. The arrangement
we use with two internal 9V batteries (yielding 18V) was conflicting with an external
power supply when connected to the J1 power connector. Current would flow from the
batteries back to the nominally lower voltage external supply, causing the batteries to
heat up and fail in pretty short order.
Most modems in Round 1 were fixed before being shipped, but some of the earliest
ones were not.
One solution to this condition is to remove the batteries whenever an external
power supply is being used.
A better solution is to make a few simple modifications on the pc board, as
described and illustrated on the NUE-PSK website at
Neither the earlier "EBS" modems nor the later modem kits have this problem. And the
coming Round 2 modems will be okay too.
NUE-PSK Digital Modem Operator's Manual, ver 1.20
www.nue-psk31/batt_mod
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Copyright 2008, American QRP Club