Apparecchiature informatiche

Dymar Electronics Limited 1785 Altro
Produttore:
Dymar Electronics Limited
Modello: 1785
Data:
Categoria: Strumenti di misura
Gruppo: Altro
Descrizione: AM FM Modulation Meter
Informazioni:
                                    The Dymar AM/FM Modulation Meter Type 1785 is an all
solid state instrument for the measurement of depth
of modulation or frequency deviation of transmitters.
It is operated either from A. C. Mains or from its own
rechargeable battery and as much is equally suitable as
a laboratory instrument or as a portable field servicing
equipment.
The frequency range covered is the whole of the V.H.F.
band and extends into the U.H.F. band to include
the mobile band of 470 MHz.
The sensitivity over the whole of this range is better
than 2.5 mV in 50 ohm (-40 dm) which permits loose
coupling to the transmitter under test.

The instrument is specifically designed for measurement
of narrow deviation transmitters in todays mobile
and portable radiotelephones, the most sensitive
deviation being 3 kHz. The local oscillator has low
residual F. M. noise of typically 44 db below 3 kHz.
Auxiliary outputs are provided both at the Intermediate
Frequency (500 kHz) for viewing the modulation envelope
and at Audio Frequency for measurement of distortion.

Questi manuali sono disponibili per l'attrezzatura di cui sopra:

Dymar Electronics Limited -- 1785 -- Servizio e manuale utente
Nome del file: Dymar-4084-Manual-Page-1-Picture
Tipo manuale: Servizio e manuale utente
Pagine: 34
Dimensioni: 1.37 Mbytes (1439991 Bytes)
Lingua: Inglese
Revisione:
Manuale-ID/numero:
Data:
Qualità: Documento scansionato, tutto leggibile.
Data di aggiunta:
MD5: d5c697982ca35448db1a1d25258f4904
Downloads: 112 dal 21 gennaio 2013
Informazioni:
CONTENTS

1.	General Description,	1

2.	Specification.	2

3.	Operation,	5

4.	Technical description.	9

5.	Alignment procedure.	13

6.	Component List.	       16

7.	Circuit Diagrams,	29
Dymar-4084-Manual-Page-1-Picture
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