AOR AR5000 Manual de Instruções descarregar pdf (Página 11)

Test signals have been generated at 184 MHz FM and the results are presented here while

monitoring voltage on the rear AUX connector and using the LM command via the built-in

RS232 port and have concentrated on levels between -120 and -100dBm:-

Signal level

Dev/Filter

5/15kHz

AGC RS232

Dev/Filter

24/30kHz

AGC RS232

Dev/Filter

24/110kHz

AGC RS232

-117dBm 0.32 uV 4.58 V 03 4.58 V 03 4.58 V 03

-116 0.35 4.57 03 4.58 03 4.58 03

-114 0.45 4.56 03 4.58 03 4.58 03

-113 0.50 4.52 03 4.58 03 4.58 03

-112 0.56 4.47 03 4.58 03 4.58 03

-111 0.63 4.40 03 4.57 03 4.58 03

-110 0.71 4.34 03 4.55 03 4.58 03

-109 0.79 4.28 03 4.50 03 4.58 03

-108 0.89 4.23 08 4.44 03 4.58 03

-107 1.00 4.17 11 4.36 03 4.58 03

-106 1.12 4.13 17 4.31 03 4.57 03

-105 1.26 4.09 22 4.24 09 4.53 03

-104 1.14 4.06 27 4.19 11 4.48 03

-103 1.58 4.03 2F 4.14 1A 4.42 03

-102 1.78 4.00 36 4.10 21 4.36 03

-101 1.99 3.97 3C 4.06 2A 4.30 03

-100 2.20 3.95 41 4.03 31 4.24 08

Program search of the new 8.33kHz airband step using the AR5000

The new airband channel step comes into effect in 1999 and 2000 for most of Europe and is to

be further extend after that time.

There is much confusion over the issue of 8.33 kHz, in reality it is not 8.33 but eight-and-one-

third. As a third cannot be expressed in a decimal fashion, a small compound frequency error

will occur every third increment. Ideally the end digits should read ‘00’ ‘33’ ‘66’ ‘00’ but will

be display as ‘00’ ‘33’ ‘66’ ‘99’. In reality, the AR5000 may be programmed in 8.333 kHz

steps to further minimise the compound error, the error is then very small indeed, especially

when considering the sub band is only expected to occupy 132.000 - 134.500 MHz (one Hz

every third tuning increment!).

Work around:

If you do not wish to live with a small compound error, it is possible to program three

program search banks as a GROUP (refer to section 12-4 Page 49 onward of the English

language operating manual).

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 ... 23 24

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AOR AR5000 Manual de Instruções Página 11

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