T
ROUBLESHOOTING
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7.6
During FasTesT
Display message
02'8/$7('#
6,*1$/#'(7(&7('#
21#)$67(67#3257
12#
&20081,&$7,21
(5525#
&20081,&$7,21
7.7
While Detecting a Modulated Signal
:KHQ#WKH#)270<53#VRXUFH#LV#RQ/#WKH#)270<53#FDQQRW#GHWHFW#ZKHWKHU#WKH#VLJQDO#
UHFHLYHG#DW#LWV#GHWHFWRU#SRUW#LV#PRGXODWHG1
7-4
Meaning
$#PRGXODWHG#VLJQDO#KDV#
EHHQ#GHWHFWHG#DW#WKH#
T #SRUW1
F
T
AS
ES
1R#UHPRWH#XQLW#KDV#
EHHQ#UHDFKHG#IRU#
FRPPXQLFDWLRQ1
&RPPXQLFDWLRQ#ZLWK#
WKH#UHPRWH#XQLW#KDG#
EHHQ#HVWDEOLVKHG#EXW#
ZDV#LQWHUUXSWHG/#
SRVVLEO\#EHFDXVH#ORVV#
DORQJ#WKH#V\VWHP#XQGHU#
WHVW#LV#JUHDWHU#WKDQ#WKH#
G\QDPLF#UDQJH#RI#WKH#
LQVWUXPHQW1
Solution
7KLV#IHDWXUH#LV#LQWHQGHG#WR#IDFLOLWDWH#
HQG0WR0HQG#ILEHU#LGHQWLILFDWLRQ1
&KHFN#WKH#FRQQHFWLRQV1#&KHFN#WKH#
SRZHU#RXWSXW1#6HQG#D#5 N+]#WRQH#
DQG#VHH#LI#WKH#UHPRWH#XQLW#GHWHFWV#LW1#
5HIHUHQFH#ERWK#XQLWV#DJDLQ#DQG#
PDNH#VXUH#DWWHQXDWLRQ#GRHV#QRW#
H[FHHG#FRPPXQLFDWLRQ#UDQJH1#7U\#WR#
HVWDEOLVK#FRPPXQLFDWLRQ#ZLWK#ERWK#
XQLWV#DW#WKH#VDPH#ORFDWLRQ1
5HSHDW#WKH#SURFHGXUH1#&KHFN#WKH#
FRQQHFWLRQV1#&KHFN#WKH#SRZHU#
RXWSXW1#7U\#WR#HVWDEOLVK#
FRPPXQLFDWLRQ#ZLWK#ERWK#XQLWV#DW#
WKH#VDPH#ORFDWLRQ1#,I#SUREOHP#
SHUVLVWV/#FDOO#(;)21#
FOT-920